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Home My WebLink AboutLot 1 Hydraulic Analysis I . RICK ENGINEERING COMPANY," I I I Hydrologic/ Hydraulic Analysis For Tract No. 23304 I I I I I I I I I I ~ I ,I ,I il il i"1 I il I , I I I I, I I I I I HYDROLOGICIHYDRAULIC ANALYSIS FOR TRACT NO. 23304 CITY OF TEMECULA COUNTY OF RIVERSIDE IN 13122 August 26, 1998 ,,~d ~:.--, ROBERT STOCKTON R.C.E.33591 Expires 6-30-02 PORTOFINO APARTMENTS Prepared for: VAN DAELE DEVELOPMENT 2900 Adams Street #C-25 Riverside, Ca 92504 Prepared by: RICK ENGINEERING COMPANY 3050 Chicago Avenue, Suite 100 Riverside, CA 92507 (909) 782-0707 .:;.~~O". I il I I . I I I I I I . I I I I . I I TABLE OF CONTENTS . PURPOSE ............................................................. 1 PROJECT DESCRIPTION ................................................ 1 : HYDROLOGY ......................................................... 1 . HYDRAULICS ......................................................... 1 I CONCLUSION ......................................................... 2 . LIST OF APPENDICES A. HYDROLOGY STUDY (10- YEAR STORM EVENT) 1. TRIBUTARY AREAS NORTH OF LONG CANYON WASH. .. . . .. ... 3 2. TRIBUTARY AREAS SOUTH OF LONG CANYON WASH .......... 40 B. HYDROLOGY STUDY ( 100-YEAR STORM EVENT) 1. TRIBUTARY AREAS NORTH OF LONG CANYON WASH ......... 80 2. TRIBUTARY AREAS SOUTH OF LONG CANYON WASH.......... 117 RATIONAL METHOD HYDROLOGIC ANALYSIS SUB-BASIN MAP .... Pocket . PURPOSE 1 C_..:"';':..",. -_._---~- ~_____ft__._. 1 I 1 1 I I 1 I I 1 I I I I I I I I ,I This report represents the hydrologic and hydraulic analysis of the 100-year, 24-hour storm event for ! Portofino Apartments development, Tract 23304 in the City of Temecu1a, County of Riverside, I California. Thisreport was prepared following the guidelines and regulations within the Riverside I Oounty Flood Control and Water Conservation District's Hydrology Manual (1978). I PROJECT DESCRIPTION Tract No. 23304 is approximately 21 acres apartment development located in the City of Temecu1a. The project is bordered by the proposed Tuscany Ridge Apartments Development Plan No. PA 97- 0089 to the north, Rancho California Road to the south, Market Association Apartment 19821 to the 'west and Westlake Tract No. 20735-1 to the east. This development, formerly known as Club Valencia, was studied by Rick Engineering Company in October 1988. The drainage study was approved at the time, but due to revisions on the precise . grading plans this drainage study reflect the most current changes. Offsite flow entering into the ,system is obtained by using the following references: Tuscany Ridge Apartment Developement I Plan No. PA-970089 and the previous hydrology report for this development titled Drainage Study 'for Tract No. 23304 Preparedfor Club Valencia on October 4, 1988. ; HYDROLOGY The Riverside County Flood Control and Water Conservation District (RCFC) Rational Method (Advanced Engineering Software, Version 1.5A, copyright 1982-1996) is used to determine the .offsite and onsite runoff for the 100-year, 24-hour storm event. This site has a "BOO soil type. HYDRAULICS 'Water surface profiles in the proposed storm drain pipes are calculated using WSPGN, Riverside County Flood Control District Program No. FO 515P, Water Surface Pressure Gradient Hydraulic 'Analysis Computer Program, Version 7. Calculations are labeled Appendix C. 1 -;~- I 1 I I 1 I 1 I I I I 1 I I I I I I 1 I CONCLUSION These supporting hydrology and hydraulic calculations are provided to substantiate the design of the . proposed storm drain facilities. Onsite and off site hydrology maps are included showing cumulative , flows at particular points of concentration. 2 --'---' "'-~"--'----" - --- ---~~-_.~.~- I :1 I !I I I I I I I I I I I I I I I I APPENDIX A HYDROLOGY STUDY (to-YEAR STORM EVENT) I I ! 'I * * * '* * *.* * * * * * * * * * ** *** * * ** * *** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM BASED ON RIVERSIDE COUNTY FLOOD CONTROL & WATER CONSERVATION DISTRICT (RCFC&WCD) 1978 HYDROLOGY MANUAL (c) Copyright 1982-96 Advanced Engineering Software (aes) Ver. 1.5A Release Date: 01/01/96 License ID 1261 I I I I I * * ** **!* * *** * * * * * * * * * * * * * * * DESCRIPTION I IN 13.122 - TRACT NO. 23304 DEVELOPED CONDITION 10-YR, 1-HR STORM Analysis prepared by: 5620 RICK ENGINEERING COMPANY WATER RESOURCES DIVISION FRIARS ROAD, SAN DIEGO, CA (619) 291-0707 92110 OF STUDY ************************** * EVENT FOR TRIBUTARY AREAS NORTH * * OF LONG CANYON WASH --- MODELED BY S.M.L. ON AUGUST 26, 1998 * 1* * * * **,* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * * * * * * * I FILE NAME: 13122A.DAT TIME/DATE OF STUDY: 14:43 8/26/1998 I USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: I I I I I I I *******,********************************************************************* I FLOW PROCESS FROM NODE USER SPECIFIED STORM EVENT(YEAR) = 10.00 SPECIFIED MINIMUM PIPE SIZE (INCH) = 4.00 SPECI,FIED PERCENT OF GRADIENTS (DECIMAL) TO USE 10-YEAR STORM 10-MINUTE INTENSITY (INCH/HOUR) = lO-YEAR STORM 60-MINUTE INTENSITY (INCH/HOUR) = 100-~EAR STORM 10-MINUTE INTENSITY (INCH/HOUR) 100-~EAR STORM 60-MINUTE INTENSITY (INCH/HOUR) SLOPE OF 10-YEAR INTENSITY-DURATION CURVE = SLOPE OF 100-YEAR INTENSITY-DURATION CURVE = COMPUTED RAINFALL INTENSITY DATA: STORM EVENT = 10.00 I-HOUR INTENSITY (INCH/HOUR) SLOPE OF INTENSITY DURATION CURVE = .5506 RCFC&WCD HYDROLOGY MANUAL "C"-VALUES USED NOTE: COMPUTE CONFLUENCE VALUES ACCORDING TO RCFC&WCD HYDROLOGY MANUAL AND IGNORE OTHER CONFLUENCE COMBINATIONS FOR DOWNSTREAM ANALYSES FOR FRICTION 2.360 .880 = 3.480 = 1. 300 .5505732 .5495536 SLOPE = .85 .8888 3 10.00 TO NODE 11.00 IS CODE = 21 'to::::.c.~- "--..-..-..--- --------._~- ..._-~_-"'~.:c I 'I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ! -;========================================================================== ASSUMED INITIAL SUBAREA UNIFORM ,I DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 il INITIAL SUBAREA FLOW-LENGTH = 140.00 UPSTREAM ELEVATION = 103.60 DOWNSTRE.~ ELEVATION = 99.50 :1 ELEVATION DIFFERENCE = 4.10 TC = .323*[( 140.00**3)/( 4.10)]**.2 4.720 I COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.491 SOIL CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8585 SUBAREA RUNOFF (CFS) = .84 I TOTAL AREA(ACRES) = .28 TOTAL RUNOFF(CFS) .84 11*************************************************************************** FLOW PROCESS FROM NODE 11.00 TO NODE 12.00 IS CODE = 9 1--------------------------------------------------------------------------- >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I UPSTREAM NODE ELEVATION = 99.50 DOI~STREAM NODE ELEVATION = 97.90 I CHANNEL LENGTH THRU SUBAREA (FEET) = 215.00 "V" GUTTER WIDTH(FEET) = 4.00 GUTTER HIKE (FEET) PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 I PAVEMENT CROSSFALL(DECIMAL NOTATION) = .02000 MAXI~l DEPTH(FEET) = 1.00 I 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 1.571 SOIL CLASSIFICATION IS "B" I I I I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8280 TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) AVERAGE FLOWDEPTH(FEET) = .41 FLOODWIDTH(FEET) "V" GUTTER FLOW TRAVEL TIME(MIN) 16.33 TC(MIN) SUBAREA AREA(ACRES) = .50 SUBAREA RUNOFF (CFS) SUMMED AREA(ACRES) = .78 TOTAL RUNOFF (CFS) = END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .45 FLOODWIDTH(FEET) = 35.91 FLOW VELOCITY(FEET/SEC.) = .22 DEPTH*VELOCITY .100 = .22 = 31. 84 21.33 = .65 1.49 .10 (..1 :11*************************************************************************** I FLOW PROCESS FROM NODE 12.00 TO NODE 13.00 IS CODE = 9 'It--------------------------------------------------------------------------- >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< Ir=~:;;;;::=:~~:=:~:;:;;~:=:=====;~~;~======================================= DOWNSTREAM NODE ELEVATION = 93.80 I CHANNEL LENGTH THRU SUBAREA ( FEET) = 370 . 00 "V" GUTTER WIDTH(FEET) = 4.00 GUTTER HIKE (FEET) = PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 I PAVEMENT CROSSFALL(DECIMAL NOTATION) = .03000 MAXIMUM DEPTH(FEET) = 1.00 il 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 1.095 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8120 I TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) AVERAGE FLOWDEPTH(FEET) = .48 FLOODWIDTH(FEET) I "V" GUTTER FLOW TRAVEL TIME (MIN) = 19.74 TC (MIN) = SUBARE1\. AREA (ACRES) = .66 SUBAREA RUNOFF (CFS) = SUMMED AREA (ACRES) = 1.44 TOTAL RUNOFF(CFS) I END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .50 FLOODWIDTH(FEET) = 28.89 I FLOW VELOCITY (FEET/SEC.) = .32 DEPTH*VELOCITY = .100 .31 27.08 41. 08 .59 2.08 .16 ~******i********************************************************************* FLOW PROCESS FROM NODE 14.00 TO NODE 13.00 IS CODE = 8 1_-------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 1.095 SOIL .CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8120 SUBARE1\. AREA (ACRES) = .40 SUBAREA RUNOFF (CFS) TOTAL AREA(ACRES) = 1.84 TOTAL RUNOFF (CFS) = I TC (MIN) = 41. 08 .36 2.43 ~*****~********************************************************************* FLOW.PROCESS FROM NODE 14.00 TO NODE 13.00 IS CODE = 1 It--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< (=========================================================================== TOTAL NUMBER OF STREAMS = 3 5 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME OF CONCENTRATION(MIN.) = 41.08 II I II I RAINFALL INTENSITY (INCH/HR) = 1.09 TOTAL STREAM AREA(ACRES) = 1.84 PEAK FLOW RATE (CFS) AT CONFLUENCE = 2.43 *******:********************************************************************* I FLOW PROCESS FROM NODE 15.50 TO NODE 15.00 IS CODE = 7 ------.--------------------------------------------------------------------- >>>>>USER SPECIFIED HYDROLOGY INFORMATION AT NODE<<<<< ~=========================================================================== USER-SPECIFIED VALUES ARE AS FOLLOWS: I TC(MIN) = 9.67 RAIN INTENSITY (INCH/HOUR) = 2.43 TOTAL AREA(ACRES) = 1.12 TOTAL RUNOFF(CFS) = 2.90 I *******~********************************************************************* I FLOW.PROCESS FROM NODE 15.00 TO NODE 13.00 IS CODE = 3 ------,--------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I DEPTH OF FLOW IN 12.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) 7.2 UPSTREAM NODE ELEVATION = 91.13 DOWNSTREAM NODE ELEVATION = 88.80 FLOWLENGTH(FEET) = 80.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 12.00 PIPEFLOW THRU SUBAREA (CFS) = 2.90 TRAVEL TIME(MIN.) = .19 TC(MIN.) = 6.1 INCHES ;:;: .013 NUMBER OF PIPES = 1 9.86 1******,********************************************************************* FLOW.PROCESS FROM NODE 15.00 TO NODE 13.00 IS CODE = 1 I==:::::~~~~~~~:~=~~~~:~~~~~:=~:~~~=:~~=~~~:~~~~~~:::::===================== I TOTAL NUMBER OF STREAMS = 3 CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) 9.86 I RAINFALL INTENSITY (INCH/HR) = 2.40 TOTAL STREAM AREA(ACRES) = 1.12 I PEAK ,FLOW RATE (CFS) AT CONFLUENCE = STREAM 2 ARE: 2.90 & ;~******I********************************************************************* I FLOW PROCESS FROM NODE 16.50 TO NODE 16.00 IS CODE = 7 ;1- - - - - -.- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- >>>>>USER SPECIFIED HYDROLOGY INFORMATION AT NODE<<<<< I==~:;;::;;;;;;;;=~:~~;:=:;;=::=;;~~;::~===================================== TC(MIN) = 5.23 RAIN INTENSITY (INCH/HOUR) = 3.41 I TOTAL AREA(ACRES) = .25 TOTAL RUNOFF (CFS) = il * * * * * *1* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * **** * * * * * * * * * * * * * * * * * * * * * FLOW PROCESS FROM NODE 16.00 TO NODE 13.00 IS CODE = 3 1--------------------------------------------------------------------------- >>>>>C0MPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< 1=========================================================================== DEPTH OF FLOW IN 9.0 INCH PIPE IS 4.5 INCHES I PIPEFL0W VELOCITY(FEET/SEC.) = 4.5 UPSTREAM NODE ELEVATION = 92.00 DOWNSTREAM NODE ELEVATION = 88.80 I FLOWLENGTH (FEET) = 190.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) 9.00 I PIPEFL0W THRU SUBAREA(CFS) 1.00 TRAVEL TIME(MIN.) = .70 TC(MIN.) 1. 00 .013 NUMBER OF PIPES 1 5.93 ~******~******************************************************************** I FLOW PROCESS FROM NODE 16.00 TO NODE 13.00 IS CODE = 1 ------.--------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< I ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I I I TOTAL NUMBER OF STREAMS = 3 CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) = 5.93 RAINFALL INTENSITY (INCH/HR) = 3.18 TOTAL STREAM AREA (ACRES) = .25 PEAK .FLOW RATE (CFS) AT CONFLUENCE = ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 2.43 2 2.90 3 1.00 Tc (MIN. ) 41.08 9.86 5.93 INTENSITY ( INCH/HOUR) 1.095 2.403 3.177 -." ..,."'"'---..-....:-- ^._._~..._--"..."_. c:;~~ STREAM 3 ARE: 1. 00 AREA (ACRE) 1. 84 1.12 .25 ( I ** * * * *,* * * * * * * * * * * * * * * * * * * * * * * * * **WARNING* * * * * * * * *** *** * * * * * * * * * * * * * * * * * * * * '. IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED . ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. 1******1******************************************************************** . RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 3 STREAMS. I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY I NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 3.10 5.93 3.177 2 4.24 9.86 2.403 I 3 4.10 41. 08 1.095 I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK 'FLOW RATE (CFS) 4.24 Tc (MIN. ) ; 9.86 TOTAL AREA (ACRES) ; 3.21 I 1******1********************************************************************* FLOW PROCESS FROM NODE 13.00 TO NODE 17.00 IS CODE; 3 I >>>>>.COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< I;~:;;:;~;;;~~:;;:;;~;~~;;:~:;;;;:;;~;;;:~:;;:~::~;;;;;;;;;;;;;;;;;;;;;;;;;; PIPEFLOW VELOCITY(FEET/SEC.); 5.8 I UPSTR,EAM NODE ELEVATION; 88.80 DOWNSTREAM NODE ELEVATION; 88.03 I FLOWLENGTH(FEET); 60.00 MANNING'S N .013 ESTIMATED PIPE DIAMETER (INCH) ; 15.00 NUMBER OF PIPES; 1 PIPEFLOW THRU SUBAREA (CFS) ; 4.24 I TRAVEL TIME (MIN.); .17 TC (MIN.) ; 10.03 ~*****~********************************************************************* FLOW PROCESS FROM NODE 20.00 TO NODE 21.00 IS CODE; 21 ~--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< 1_;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT ~ I TC ; K* [ (LENGTH**3) / (ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-LENGTH = .. UPSTREAM ELEVATION = 99.90 . DOWNSTREAM ELEVATION = 97.60 ELEVATION DIFFERENCE = 2.30 I TC = . 323 * [ ( 14 0 . 00 * * 3) / ( 2 . 30) ] * * . 2 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = I SOIL CLASSIFICATION IS "B" I 140.00 5.298 3.382 APARTMENT DEVELOPMENT SUBAREA RUNOFF(CFS) TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = .81 .28 .8574 TOTAL RUNOFF(CFS) = .81 11******1********************************************************************* FLOW PROCESS FROM NODE 21.00 TO NODE 31.00 IS CODE = 3 11---------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ;~;======================================================================== DEPTH OF FLOW IN 9.0 INCH PIPE IS 4.6 INCHES I PIPEFLOW VELOCITY (FEET/SEC.) = 3.5 UPSTREAM NODE ELEVATION = 94.60 I DOWNSTREAM NODE ELEVATION = 94.07 FLOWLENGTH(FEET) = 52.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER (INCH) 9.00 NUMBER OF PIPES 1 I PIPEFLOW THRU SUBAREA (CFS) .81 TRAVEL TIME(MIN.) = .24 TC(MIN.) = 5.54 I **************************************************************************** I FLOW PROCESS FROM NODE 21. 00 TO NODE 31. 00 IS CODE = 1 I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< =========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 5.54 I RAINFALL INTENSITY (INCH/HR) = 3.30 TOTAL STREAM AREA(ACRES) = .28 PEAK FLOW RATE (CFS) AT CONFLUENCE = .81 I *******.********************************************************************* I FLOW PROCESS FROM NODE 30.00 TO NODE 31.00 IS CODE = 21 I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< C{ ~..;:..,._- -- .~ . _. -, ------.--..-> ~.~-~_.~._- I I . ============================================================================ , I . ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 50.00 UPSTREAM ELEVATION = 98.40 I DOWNSTREAM ELEVATION = 97.10 'I . ELEVATION DIFFERENCE = 1.30 TC = .323*[( 50.00**3)/( 1.30)]**.2 3.202 ,I COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.491 I SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8585 SUBAREA RUNOFF(CFS) = .42 I TOTAL AREA (ACRES) = .14 TOTAL RUNOFF (CFS) = .42 ~******.********************************************************************* FLOW PROCESS FROM NODE 30.00 TO NODE 31.00 IS CODE = 1 1--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< =========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 5.00 I RAINFALL INTENSITY (INCH/HR) = 3.49 TOTAL STREAM AREA (ACRES) = .14 PEAK FLOW RATE(CFS) AT CONFLUENCE = I I I .42 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 .81 2 .42 Tc INTENSITY (INCH/HOUR) 3.299 3.491 AREA (MIN. ) 5.54 5.00 (ACRE) .28 .14 * * * * * *,* * * * * * * * * * * * * * * * * * * * * * * * ** *WARNING* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA I WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ******,******************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I 10 I I I I COMPUTED CONFLUENCE PEAK .FLOW RATE (CFS) TOTAL AREA (ACRES) ~ I ** PEAK FLOW RATE TABLE * * STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 1.15 5.00 3.491 2 1. 21 5.54 3.299 ESTIMATES ARE = 1.21 .42 AS FOLLOWS: Tc (MIN.) ~ 5.54 1******1********************************************************************* FLOW.PROCESS FROM NODE 31.00 TO NODE 41.00 IS CODE ~ 3 I >>>>>.COMPUTE PIPEFLO\~ TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< Ir~~;;;:~~;~;~~:~;:~~~:~~~;:~:~;;;;~;;~~~:~:~;:~:;;~~~~~~~~~~~~~~~~~~~~~~~~~~ PIPEFLOW VELOCITY(FEET/SEC.) 7.9 I UPSTREAM NODE ELEVATION ~ 94.07 DOWNSTREAM NODE ELEVATION ~ 91.68 I FLOWLENGTH (FEET) ~ 34.00 MANNING'S N ~ .013 ESTIMATED PIPE DIAMETER(INCH) ~ 6.00 NUMBER OF PIPES 1 PIPEFLOW THRU SUBAREA (CFS) 1.21 I TRAVEL TIME(MIN.) ~ .07 TC(MIN.) ~ 5.61 ~******I********************************************************************* FLOW.PROCESS FROM NODE 31.00 TO NODE 41.00 IS CODE ~ 1 11--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< Ir~;~;~~~~;;;~~;~;;;;::;~:~~;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME OF CONCENTRATION (MIN. ) 5.61 RAINFALL INTENSITY (INCH/HR) ~ 3.28 TOTAL STREAM AREA (ACRES) ~ .42 I PEAK :FLOW RATE (CFS) AT CONFLUENCE ~ 1.21 11*************************************************************************** FLOW PROCESS FROM NODE 40.50 TO NODE 40.00 IS CODE ~ 7 11------.--------------------------------------------------------------------- >>>>>USER SPECIFIED HYDROLOGY INFORMATION AT NODE<<<<< I~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1\ I~- ,I I I USER-SPECIFIED VALUES ARE AS FOLLOWS: TC(MIN) = 18.92 RAIN INTENSITY (INCH/HOUR) = 1. 68 TOTAL AREA(ACRES) = 9.78 TOTAL RUNOFF(CFS) = 15.30 *******,********************************************************************* I FLOW PROCESS FROM NODE 40.00 TO NODE 41.00 IS CODE = 3 . --------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< ---------------------------------------------------------------------------- -------.--------------------------------------------------------------------- I I I I DEPTH OF FLOW IN 15.0 INCH PIPE IS 10.5 INCHES PIPEFL0W VELOCITY(FEET/SEC.) = 16.6 UPST~EAM NODE ELEVATION = 99.41 DOWNSTREAM NODE ELEVATION 91. 68 FLOWLENGTH(FEET) = 83.00 MANNING'S N ESTIMATED PIPE DIAMETER(INCH) 15.00 PIPEFLOW THRU SUBAREA(CFS) = 15.30 TRAVEL TIME(MIN.) = .08 TC(MIN.) = 19.00 .013 NUMBER OF PIPES 1 ,******-********************************************************************* FLOW PROCESS FROM NODE 40.00 TO NODE 41.00 IS CODE = 1 I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< II=;~;~~=~;;:=~;=;;:;::;=:==;============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: I TIME OF CONCENTRATION(MIN.) 19.00 RAINFALL INTENSITY (INCH/HR) = 1.67 TOTAL STREAM AREA(ACRES) = 9.78 I PEAK FLOW RATE (CFS) AT CONFLUENCE = I I 15.30 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 1.21 2 15.30 Tc (MIN. ) 5.61 19.00 INTENSITY ( INCH/HOUR) 3.275 1.674 AREA (ACRE) .42 9.78 I * * * * * *.* * * * * * * * * * ***** * * **** * * * * * *WARNING** * * * * * * * * * *** * * * * * * * * ** * * * * * * * * * * IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. \~ I******i******************************************************************** I I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I ** PEAK I I I I *******-********************************************************************* STREAM NUMBER 1 2 FLOW RATE RUNOFF (CFS) 5.73 TABLE ** Tc INTENSITY ( INCH/HOUR) 3.275 1. 674 15.92 (MIN. ) 5.61 19.00 COMPUTED CONFLUENCE PEAK -FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE 15.92 10.20 AS FOLLOWS: Tc (MIN.) = 19.00 Il-~~~~-~~~~~~~-~~~~-~~~~----~~~~~-~~-~~~~----~~~~~-~~-~~~~_:_--=------------ >>>>>:COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< I ---------------------------------------------------------------------------- -------,--------------------------------------------------------------------- I I I I DEPTH OF FLOW IN 21.0 INCH PIPE IS 13.8 INCHES PIPEFLOW VELOCITY(FEET/SEC.) = 9.5 UPSTREAM NODE ELEVATION = 91.68 DOWNSTREAM NODE ELEVATION 88.93 FLOWLENGTH(FEET) = 138.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 21.00 PIPEFLOW THRU SUBAREA (CFS) = 15.92 TRAVEL TIME(MIN.) = .24 TC(MIN.) = 19.25 .013 NUMBER OF PIPES 1 f******'********************************************************************* FLOW:PROCESS FROM NODE 50.00 TO NODE 51.00 IS CODE = 21 I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< --=========================================================================== I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 I INITIAl, SUBAREA FLOW-LENGTH = 100.00 UPSTREAM ELEVATION = 100.00 DOWNSTREAM ELEVATION = 99.20 I ELEVATION DIFFERENCE = .80 TC = .323*[( 100.00**3)/( .80)]**.2 I 10 ~EAR RAINFALL INTENSITY (INCH/HOUR) = 5.348 3.364 13 II I 'I SOIL .CLASSIFICATION IS "B" APARTMENT DEVELOPMENT SUBAREA RUNOFF (CFS) = TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = .8573 .61 .21 TOTAL RUNOFF(CFS) .61 1******'********************************************************************* FLOW PROCESS FROM NODE 51.00 TO NODE 73.00 IS CODE = 3 I >>>>>,C0MPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< IJ=~;:;:=~;=;~~:=;:===:~~=;:~:=:;:;=;;===:~~=;:~:;;========================== PIPEFL0W VELOCITY(FEET/SEC.) 4.2 II UPSTREAM NODE ELEVATION = 96.61 DOWNSTREAM NODE ELEVATION 93.82 I FLOWLENGTH (FEET) = 135.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER(INCH) = 6.00 NUMBER OF PIPES 1 PIPEFL0W THRU SUBAREA(CFS) .61 I TRAVEL TIME(MIN.) = .53 TC(MIN.) = 5.88 11******:********************************************************************* FLOW ,PROCESS FROM NODE 51.00 TO NODE 73.00 IS CODE = 1 11--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< Ir=;~;~=~:;;;=~;=;;;;~;=:==;============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME OF CONCENTRATION (MIN.) = 5.88 RAINFALL INTENSITY (INCH/HR) = 3.19 I TOTAL STREAM AREA(ACRES) = .21 PEAK 'FLOW RATE (CFS) AT CONFLUENCE = .61 '11*************************************************************************** FLOW.PROCESS FROM NODE 60.00 TO NODE 61.00 IS CODE = 21 11--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< It========;;;~;~=;:;;;;~=;~;;;;=~;;~;:==================================== DEVELOPMENT IS APARTMENT I TC =K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 95.00 I UPSTREAM ELEVATION = 100.00 \y I II I I I *******1********************************************************************* DOWNSTREAM ELEVATION = 99.50 ELEVATION DIFFERENCE = .50 TC = .323*[( 95.00**3)/( .50)]**.2 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = SOIL .CLASSIFICATION IS "B" 5.697 3.249 APARTMENT DEVELOPMENT SUBAREA RUNOFF (CFS) TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = .33 .12 .8561 TOTAL RUNOFF (CFS) .33 I FLOW:PROCESS FROM NODE 61.00 TO NODE 73.00 IS CODE = 3 ------.--------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< I ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I DEPTH OF FLOW IN 6.0 INCH PIPE IS PIPE~LOW VELOCITY(FEET/SEC.) = 3.6 UPSTREAM NODE ELEVATION = 95.50 DOWNSTREAM NODE ELEVATION = 93.82 FLOWLENGTH(FEET) = 85.00 MANNING'S N ESTIMATED PIPE DIAMETER(INCH) = 6.00 PIPEFLOW THRU SUBAREA (CFS) = .33 TRAVEL TIME(MIN.) = .39 TC(MIN.) 2.9 INCHES == .013 NUMBER OF PIPES = 1 6.09 1*************************************************************************** FLOW:PROCESS FROM NODE 61.00 TO NODE 73.00 IS CODE = 1 Il=:::::~~~~~~~~~=~~~~:~~~~~~=~~:~~=:~:=~~~:~~~~~~:::::===================== TOTAL NUMBER OF STREAMS = 3 I CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) 6.09 I RAINFALL INTENSITY (INCH/HR) = 3.13 TOTAL STREAM AREA(ACRES) = .12 I PEAK FLOW RATE (CFS) AT CONFLUENCE = STREAM 2 ARE: .33 1*************************************************************************** FLOW.PROCESS FROM NODE 70.00 TO NODE 71.00 IS CODE = 21 I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ---------------------------------------------------------------------------- ----------.------------------------------------------------------------------ I ASSUMED INITIAL SUBAREA UNIFORM is I 'I I I I I I **************************************************************************** DEVELOPMENT IS APARTMENT TC ; X*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH; 220.00 UPSTREAM ELEVATION; 121.90 DOWNSTREAM ELEVATION; 107.40 ELEVATION DIFFERENCE; 14.50 TC; .323*[( 220.00**3)/( 14.50)]**.2 4.808 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 10 YEAR RAINFALL INTENSITY (INCH/HOUR) ; 3.491 SOIL :CLASSIFICATION IS "B" APAR~MENT DEVELOPMENT RUNOFF COEFFICIENT; .8585 SUBAREA RUNOFF (CFS) ; 1.05 TOTAL AREA (ACRES) ; .35 TOTAL RUNOFF(CFS) 1. 05 I FLOW PROCESS FROM NODE 71.00 TO NODE 72.00 IS CODE; 9 --------------------------------------------------------------------------- >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< IJ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; - UPSTREAM NODE ELEVATION; 107.40 I Do.WNSTREAM NODE ELEVATION; 100.60 CHANNEL LENGTH THRU SUBAREA (FEET) ; 290.00 "V" GUTTER WIDTH(FEET); 4.00 GUTTER HIKE(FEET) ; I PAVEMENT LIP(FEET); .031 MANNING'S N ; .2000 PAVEMENT CROSSFALL(DECIMAL NOTATION); .03000 I MAXIMUM DEPTH (FEET); 1. 00 10 ,YEAR RAINFALL INTENSITY (INCH/HOUR) ; 1.798 SOIL CLASSIFICATION IS "B" I I I I APAR~MENT DEVELOPMENT RUNOFF COEFFICIENT; .8337 TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) ; AVERAGE FLOWDEPTH(FEET); .41 FLOODWIDTH(FEET); "V" GUTTER FLOW TRAVEL TIME (MIN) ; 11.69 TC(MIN); SUBAREA AREA(ACRES); .81 SUBAREA RUNOFF (CFS) SUMMED AREA(ACRES); 1.16 TOTAL RUNOFF(CFS) ; END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) ; .46 FLOODWIDTH(FEET); 26.18 FLOW ,VEl,OCITY(FEET/SEC.); .42 DEPTH*VELOCITY; .100 .41 22.56 16.69 1. 21 2.26 .20 Il*************************************************************************** FLOW I PROCESS FROM NODE 72.00 TO NODE 73.00 IS CODE; 9 ~--------------------------------------------------------------------------- >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< I;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 16 I I I I I I I I I *******,********************************************************************* UPSTREAM NODE ELEVATION = 100.60 DOWNSTREAM NODE ELEVATION = 98.60 CK~L LENGTH THRU SUBAREA(FEET) = 210.00 "V" GUTTER WIDTH(FEET) = 4.00 GUTTER HIKE (FEET) PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 PAVEMENT CROSSFALL(DECIMAL NOTATION) = .03000 MAXIMill4 DEPTH(FEET) = 1.00 10 YEAR RAINFALL INTENSITY (INCH/HOUR) SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8214 TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) = AVERAGE FLOWDEPTH(FEET) = .56 FLOODWIDTH(FEET) "V" GUTTER FLOW TRAVEL TIME (MIN) 11.35 TC(MIN) SUBAREA AREA (ACRES) = .44 SUBAREA RUNOFF(CFS) = SUMMED AREA (ACRES) = 1.60 TOTAL RUNOFF(CFS) = END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .57 FLOODWIDTH(FEET) 33.42 FLOW VELOCITY(FEET/SEC.) = .32 DEPTH*VELOCITY = .100 1. 351 .31 32.51 28.04 .49 2.75 .18 I FLOW:PROCESS FROM NODE 72.00 TO NODE 73.00 IS CODE = 1 ------.--------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< I -------,--------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I I TOTAL NUMBER OF STREAMS = 3 CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) = 28.04 RAINFALL INTENSITY (INCH/HR) = 1.35 TOTAL STREAM AREA(ACRES) = 1.60 PEAK -FLOW RATE (CFS) AT CONFLUENCE = STREAM 3 ARE: 2.75 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 .61 2 .33 3 2.75 Tc INTENSITY ( INCH/HOUR) 3.193 3.133 1. 351 AREA (ACRE) .21 .12 1. 60 (MIN. ) 5.88 6.09 28.04 I * ** * * *.* * * * * * * * * *** * * ** * **** * * * * * *WARNING** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. 'I * * * * * *,* * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * * * * * * * * *\*~ I II I I I I I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 3 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) (INCH/HOUR ) 1 1. 50 5.88 3.193 2 1. 53 6.09 3.133 3 3.15 28.04 1. 351 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE = 3.15 1. 93 AS FOLLOWS: Tc (MIN.) = 28.04 1* ** * * *:* * * * * * * * * * * **** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ******* ** *** * * * * * * * * * * * * * FLOW PROCESS FROM NODE 73.00 TO NODE 74.00 IS CODE = 3 I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< I=~:;;:=~;=;~~:=;:===;~~=;:~:=;;;:=;;===:~;=;:~::;========================== PIPEFLOW VELOCITY(FEET/SEC.) 8.9 I UPSTREAM NODE ELEVATION = 93.82 DOWNSTREAM NODE ELEVATION 92.00 I FLOWLENGTH(FEET) = 35.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER (INCH) = 9.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA (CFS) = 3.15 I TRAVEL TIME (MIN. i = .07 TC (MIN.) = 28.11 ~******-********************************************************************* FLOW PROCESS FROM NODE 80.00 TO NODE 81.00 IS CODE = 21 ~--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< I========~;;::~=;:;;;~~=;;;;::~=:;;~::==================================== DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 120.00 UPSTREAM ELEVATION = 101.20 I DOWNSTREAM ELEVATION = 101.10 ELEVATION DIFFERENCE = .10 I TC = . 323 * [ ( 12 0 . 00 * * 3) / ( .10)]**.2 9.043 Iq; I 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 2.519 I SOIL CLASSIFICATION IS nBn APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8471 SUBAREA RUNOFF (CFS) .68 I TOTAL AREA(ACRES) = .32 TOTAL RUNOFF (CFS) = .68 IL******,********************************************************************* FLOW:PROCESS FROM NODE 81.00 TO NODE 102.00 IS CODE = 3 ~--------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< ~========================================================================== DEPTH OF FLOW IN 6.0 INCH PIPE IS 4.8 INCHES I PIPEFLOW VELOCITY (FEET /SEC. ) 4.0 UPSTREAM NODE ELEVATION = 99.55 I DOWNSTREAM NODE ELEVATION 98.10 FLOWLENGTH(FEET) = 80.00 MANNING'S N .013 ESTIMATED PIPE DIAMETER (INCH) 6.00 NUMBER OF PIPES = 1 I PIPEFLOW THRU SUBAREA (CFS) = .68 TRAVEL TIME(MIN.) = .33 TC(MIN.) 9.37 I *******1********************************************************************* I FLOW PROCESS FROM NODE 81.00 TO NODE 102.00 IS CODE = 1 I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< =========================================================================== TOTAL NUMBER OF STREAMS = 3 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) 9.37 I RAINFALL INTENSITY (INCH/HR) = 2.47 TOTAL STREAM AREA (ACRES) = .32 PEAK FLOW RATE (CFS) AT CONFLUENCE = .68 I (******1********************************************************************* FLOW.PROCESS FROM NODE 90.00 TO NODE 91.00 IS CODE = 21 I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< '-=========================================================================== ASSUMED INITIAL SUBAREA UNIFORM I DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-LENGTH = 50.00 lq I UPSTREAM ELEVATION = 108.30 ':..1 DOWNSTREAM ELEVATION = 108.00 ELEVATION DIFFERENCE .30 TC = .323*[( 50.00**3)/( .30)]**.2 = 4.293 il COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.491 .1 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8585 SUBAREA RUNOFF(CFS) = .21 1 TOTAL AREA (ACRES) = .07 TOTAL RUNOFF(CFS) .21 11******;********************************************************************* FLOW PROCESS FROM NODE 91.00 TO NODE 102.00 IS CODE = 3 11--------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< =========================================================================== ESTIMATED PIPE DIAMETER(INCH) INCREASED TO 4.000 I DEPTH OF FLOW IN 4.0 INCH PIPE IS 1.6 INCHES PIPEFLOW VELOCITY(FEET/SEC.) = 6.7 1 UPSTREAM NODE ELEVATION = 104.90 DOWNSTREAM NODE ELEVATION = 98.10 FLOWLENGTH(FEET) = 50.00 MANNING'S N = .013 I ESTIMATED PIPE DIAMETER (INCH) = 4.00 NUMBER OF PIPES = PIPEFLQW THRU SUBAREA (CFS) .21 I TR.l\.VEL TIME (MIN.) = .12 TC (MIN.) = 1 5.12 1******.********************************************************************* FLOW PROCESS FROM NODE 91.00 TO NODE 102.00 IS CODE = 1 I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I TOTAL NUMBER OF STREAMS = 3 CONFLUENCE VALUES USED FOR INDEPENDENT TIME .oF CONCENTRATION (MIN. ) 5.12 I RAINFALL INTENSITY (INCH/HR) = 3.44 TOTAL STREAM AREA(ACRES) = .07 I PEAK 'FLOW RATE (CFS) AT CONFLUENCE = STREAM 2 ARE; .21 11******'********************************************************************* FLOW PROCESS FROM NODE 100.00 TO NODE 101.00 IS CODE = 21 11--------------------------------------------------------------------------- - dJJ :L I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ilt========:;;~;~=;:;;;:~=;~:;;:=;:;;~;:==================================== DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITI'AL SUBAREA FLOW-LENGTH = 100.00 I UPSTREAM ELEVATION = 110.30 DOWNSTREAM ELEVATION = 107.20 ELEVATION DIFFERENCE = 3.10 :1 TC = .323*[( 100.00**3)/( 3.10)]**.2 = 4.079 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. I 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.491 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8585 I SUBAREA RUNOFF (CFS) . 81 TOTAL AREA (ACRES) = .27 TOTAL RUNOFF(CFS) .81 I * * * * * * *;* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * I FLOW PROCESS FROM NODE 101.00 TO NODE 102.00 IS CODE = 3 I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I DEPTH OF FLOW IN 6.0 INCH PIPE IS . PIPEFL0W VELOCITY(FEET/SEC.) = 6.8 I UPSTREAM NODE ELEVATION = 104.20 DOWNSTREAM NODE ELEVATION = 98.10 FLOWLENGTH(FEET) = 105.00 MANNING'S N I ESTIMATED PIPE DIAMETER (INCH) = 6.00 , PIPEFLOW THRU SUBAREA (CFS) = .81 I TRAVEL TIME (MIN.) = .26 TC (MIN. ) 3.5 INCHES :::; .013 NUMBER OF PIPES 1 5.26 It*************************************************************************** FLOW PROCESS FROM NODE 101.00 TO NODE 102.00 IS CODE = 1 I--:::::~~~~~~~~~-~~~~~~~~~~~-~~~~~-;~~-~~~;~~~~~~:::::--------------------- >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< It=;~;:~=~::;;=~;=;;:;~;=:==;============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 3 ARE: :1 TIME OF CONCENTRATION (MIN. ) 5.26 RAINFALL INTENSITY(INCH/HR) = 3.40 I TOTAL STREAM AREA (ACRES) = .27 <0\ I II .11 il :1 ** * * * *:* * * * * * * * * * * * * * * ** * * * * * * * * * *WARNING* * * * * * ***** * * * * * * * * * * * * * * * * * * * * * * * PEAK FLOW RATE(CFS) AT CONFLUENCE = ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 .68 2 .21 3 .81 Tc INTENSITY ( INCH/HOUR) 2.470 3.444 3.396 (MIN. ) 9.37 5.12 5.26 .81 AREA (ACRE) .32 .07 .27 IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED :1 ON THE'RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ******,******************************************************************** II RAIN~ALL INTENSITY AND TIME OF CONCENTRATION RATIO I CONFLUENCE FORMULA USED FOR 3 STREAMS. ** PEAK FLOW RATE TABLE ** I STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) (INCH/HOUR) I 1 1. 37 5.12 3.444 2 1. 40 5.26 3.396 3 1.42 9.37 2.470 I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: I PEAK FLOW RATE (CFS) = 1.40 Tc (MIN. ) = 5.26 TOTAL AREA (ACRES) = .66 1* * * * * *:* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * FLOW:PROCESS FROM NODE 102.00 TO NODE 111.00 IS CODE = 3 11--------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< =========================================================================== DEPTH OF FLOW IN 9.0 INCH PIPE IS 7.0 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) = 3.8 UPSTREAM NODE ELEVATION = 98.10 I DOWNSTREAM NODE ELEVATION = 96 .40 FLOWLENGTH(FEET) = 180.00 MANNING'S N ESTIMATED PIPE DIAMETER(INCH) = 9.00 II PIPEFLOW THRU SUBAREA (CFS) = 1.40 TRAVEL TIME(MIN.) = .79 TC(MIN.) II .013 NUMBER OF PIPES = 1 6.04 ~d I !I* * *.* * *:* * * * * ** * * * * * * * * * * * * * * * * * * ** * * * * * * ** * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * * FLOW PROCESS FROM NODE 102.00 TO NODE 111.00 IS CODE = 1 Ir-:::::~~~~~~~~~-~~~~~~~~~~-~~~~~-;~~-~~~;~~~~~~:::::--------------------- ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT TIME DF CONCENTRATION(MIN.) 6.04 I RAINFALL INTENSITY (INCH/HR) = 3.14 TOTAL STREAM AREA(ACRES) = .66 I PEAK .FLOW RATE (CFS) AT CONFLUENCE = STREAM 1 ARE: 1.40 11*************************************************************************** FLOW PROCESS FROM NODE 110.00 TO NODE 111.00 IS CODE = 21 1_-------------------------------------------------------------------------- >>>>>'RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITI.AL SUBAREA FLOW-LENGTH = 155.00 UPSTREAM ELEVATION = 106.40 I DOWNSTREAM ELEVATION = 101.10 ELEVATION DIFFERENCE = 5.30 I TC = .323*[( 155.00**3)/( 5.30)]**.2 4.766 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.491 I SOIL .CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT SUBAREA RUNOFF(CFS) TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = .48 .16 .8585 TOTAL RUNOFF (CFS) .48 ~*****.********************************************************************* FLOW PROCESS FROM NODE 110.00 TO NODE 111.00 IS CODE = 1 11--------------------------------------------------------------~------------ >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< -;;;=============================;========================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME DF CONCENTRATION(MIN.) = 5.00 I RAINFALL INTENSITY (INCH/HR) = 3.49 ;;}) I TOTAL STREAM AREA(ACRES); .16 .1 PEAK ~LOW RATE(CFS) AT CONFLUENCE; !I I .48 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 1.40 2 .48 Tc INTENSITY ( INCH/HOUR) 3.145 3.491 AREA (ACRE) .66 .16 (MIN. ) 6.04 5.00 il *********************************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ******~******************************************************************** I !I I I I I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) (INCH/HOUR) 1 1. 64 5.00 3.491 2 1. 83 6.04 3.145 COMPUTED CONFLUENCE PEAK .FLOW RATE (CFS) TOTAL AREA (ACRES) ; ESTIMATES ARE 1. 83 .82 AS FOLLOWS: Tc (MIN.) ; 6.04 1******1********************************************************************* FLOW PROCESS FROM NODE 111.00 TO NODE 122.00 IS CODE; 3 I >>>>~COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< It;;;;;:;;;;;~;:;;:;;~~~~;;:~:;;;;;;;;;;;:~:;;:~:;;;;;;;;;;;;;;;;;;;;;;;;;;;; PIPEFL0W VELOCITY(FEET/SEC.); 4.3 I UPSTREAM NODE ELEVATION ; 96 .40 DOWNSTREAM NODE ELEVATION 96.20 I FLOWLENGTH (FEET); 20.00 MANNING'S N; .013 ESTIMATED PIPE DIAMETER (INCH) 12.00 NUMBER OF PIPES PIPEFLOW THRU SUBAREA (CFS) 1.83 I TRAVEL TIME (MIN.); .08 TC (MIN. ) I 1 6.12 .2"':} I , **************************************************************************** I FLOW PROCESS FROM NODE 111.00 TO NODE 122.00 IS CODE = 1 --------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< IF=========================================================================== TOTAL NUMBER OF STREAMS = 2 , II CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: , TIME OF CONCENTRATION(MIN.) = 6.12 RAINFALL INTENSITY (INCH/HR) = 3.12 I TOTAL STREAM AREA (ACRES) = .82 PEAK FLOW RATE (CFS) AT CONFLUENCE = 1.83 I *******:********************************************************************* I FLOW PROCESS FROM NODE 120.00 TO NODE 121.00 IS CODE = 21 I >>>>>'RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ~=====:=;=================================================================== ASSUMED INITIAL SUBAREA UNIFORM I DEVELOPMENT IS APARTMENT TC = X* [(LENGTH**3) / (ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-LENGTH = 65.00 UPSTREAM ELEVATION = 102.00 DOWNSTREAM ELEVATION = 100.70 I ELEVATION DIFFERENCE = 1.30 TC = .323*[( 65.00**3)/( 1.30)]**.2 3.748 I COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.491 SOIL CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8585 SUBARE1\ RUNOFF (CFS) = .21 I TOTAL AREA (ACRES) = .07 TOTAL RUNOFF(CFS) = .21 I*****~**************************~****************************************** FLOW PROCESS FROM NODE 121.00 TO NODE 122.00 IS CODE = 3 I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< II=~;:;:=~;=;~~:=;:===:~~=;:~:=:;:;=;;===~~~=;:~:;;========================== PIPEFLOW VELOCITY(FEET/SEC.) 3.2 I UPSTREAM NODE ELEVATION = 96.50 DOWNSTREAM NODE ELEVATION 96.20 I FLOWLENGTH(FEET) = 15.00 MANNING'S N .013 &S I :1 I ESTIMATED PIPE DIAMETER(INCH) PIPEFL0W THRU SUBAREA(CFS) = TRAVELTIME(MIN.) = .08 6.00 .21 TC(MIN.) NUMBER OF PIPES = 1 5.08 *******,********************************************************************* I FLOW PROCESS FROM NODE 121.00 TO NODE 122.00 IS CODE = 1 --------------------------------------------------------------------------- I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< ---------------------------------------------------------------------------- -------.--------------------------------------------------------------------- I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME DF CONCENTRATION(MIN.) = 5.08 I RAINFALL INTENSITY (INCH/HR) = 3.46 TOTAL STREAM AREA(ACRES) = .07 I PEAK FLOW RATE (CFS) AT CONFLUENCE = .21 ** CONFLUENCE DATA ** I STREAM RUNOFF Tc INTENSITY AREA NUMBER (CFS) (MIN. ) (INCH/HOUR ) (ACRE) I 1 1. 83 6.12 3.123 .82 2 .21 5.08 3.461 .07 I*********************************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ******;******************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO I CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** I STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) I 1 1.73 5.08 3.461 2 2.02 6.12 3.123 I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE (CFS) = 2.02 Tc (MIN. ) = 6.12 I TOTAL AREA (ACRES) = .89 Ol& ~*************************************************************************** I I FLOW PROCESS FROM NODE 122.00 TO NODE 132.00 IS CODE = 3 I=llt--------------------------------------------------------------------------- . >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< ~=========================================================================== DEPTH QF FLOW IN 12.0 INCH PIPE IS 7.1 INCHES '..1 PIPEFLOW VELOCITY (FEET /SEC. ) 4.2 UPSTREAM NODE ELEVATION = 96.20 DOWNSTREAM NODE ELEVATION = 95.28 I FLOWLENGTH(FEET) = 105.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER (INCH) 12.00 NUMBER OF PIPES 1 I PIPEFLOW THRU SUBAREA (CFS) = 2.02 TRAVEL TIME(MIN.) = .42 TC(MIN.) = 6.54 I **************************************************************************** I FLOW PROCESS FROM NODE 122.00 TO NODE 132.00 IS CODE = 1 --------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< I~=========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) 6.54 RAINF~LL INTENSITY (INCH/HR) = 3.01 I TOTAL STREAM AREA (ACRES) = . 89 PEAK FLOW RATE (CFS) AT CONFLUENCE = 2.02 I *******:********************************************************************* I FLOW PROCESS FROM NODE 130.00 TO NODE 131.00 IS CODE = 21 I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< =========================================================================== ASSUMED INITIAL SUBAREA UNIFORM I DEVELOPMENT IS APARTMENT TC = 'K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 I INITIAl, SUBAREA FLOW-LENGTH = 90.00 UPSTREAM ELEVATION = 105.30 DOWNSTREAM ELEVATION = 101.10 I ELEVATION DIFFERENCE = 4.20 TC = .323*[( 90.00**3)/( 4.20)]**.2 3.603 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. I 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.491 SOIL CLASSIFICATION IS "B" I APAR~MENT DEVELOPMENT RUNOFF COEFFICIENT = .8585 ;:l1 I SUBAREA RUNOFF(CFS) = il TOTAL AREA (ACRES) = .96 .32 TOTAL RUNOFF(CFS) = .96 i~*************************************************************************** FLOW PROCESS FROM NODE 131.00 TO NODE 132.00 IS CODE = 9 I !I--------------------------------------------------------------------------- >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< '1============================================================================ UPSTREAM NODE ELEVATION = 101.10 DOWNSTREAM NODE ELEVATION = 97.40 I CHANNEL LENGTH THRU SUBAREA (FEET) = 180.00 "V" GUTTER WIDTH(FEET) = 4.00 GUTTER HIKE (FEET) PAVEMENT LIP(FEET) = .031 MANNING'S N = .2000 I PAVEMENT CROSSFALL(DECIMAL NOTATION) = .03000 MAXIMUM DEPTH(FEET) = 1.00 I 10 YEAR RAINFALL INTENSITY (INCH/HOUR) SOIL :CLASSIFICATION IS "B" I I I I 2.055 APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8392 TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) = AVERAGE FLOWDEPTH(FEET) = .40 FLOODWIDTH(FEET) "V" GUTTER FLOW TRAVEL TIME(MIN) = 8.09 TC(MIN) SUBAREA AREA (ACRES) = .48 SUBAREA RUNOFF (CFS) = SUMMED,AREA(ACRES) = .80 TOTAL RUNOFF (CFS) = END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .44 FLOODWIDTH(FEET) = 24.37 FLOW VELOCITY(FEET/SEC.) = .38 DEPTH*VELOCITY = .100 .37 21.65 13.09 .83 1. 79 .17 ~******'********************************************************************* FLOW PROCESS FROM NODE 131.00 TO NODE 132.00 IS CODE = 1 II-:::::~~~~~~~~~-~~~~;~~~~~~-~~~~~-;~~-~~~;~~~~~~:::::--------------------- >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< It=========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME ,OF CONCENTRATION(MIN.) 13.09 RAINFALL INTENSITY (INCH/HR) = 2.06 I TOTAL STREAM AREA (ACRES) = .80 PEAK FLOW RATE(CFS) AT CONFLUENCE = I I 1. 79 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) INTENSITY ( INCH/HOUR) AREA (ACRE) Tc (MIN. ) ~ I II 1 2 2.02 1. 79 6.54 13.09 3.011 2.055 .89 .80 *********************************WARNING********************************** 'I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA 'I WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. : ***.k********************************************************************** 'I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I I I I I * * PEAK FLOW RATE RUNOFF (CFS) 2.91 3.17 TABLE ** Tc (MIN. ) 6.54 13 .09 INTENSITY ( INCH/HOUR) 3.011 2.055 STREAM NUMBER 1 2 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE = 2.91 1. 69 AS FOLLOWS: Tc (MIN.) = 6.54 *******,********************************************************************* I FLOW PROCESS FROM NODE 132.00 TO NODE 151.00 IS CODE = 3 ---------------------------------------------------------------------------- I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I DEPTH OF FLOW IN 15.0 INCH PIPE IS PIPEFL0W VELOCITY(FEET/SEC.) = 4.2 I UPSTREAM NODE ELEVATION = 95.28 DOWNSTREAM NODE ELEVATION = 94.90 FLOWLENGTH(FEET) = 55.00 MANNING'S N I ESTIMATED PIPE DIAMETER (INCH) 15.00 PIPEFLOW THRU SUBAREA(CFS) = 2.91 I TRAVEL TIME(MIN.) = .22 TC(MIN.) = 8.3 INCHES = .013 NUMBER OF PIPES 1 6.76 It*************************************************************************** FLOW 'PROCESS FROM NODE 132.00 TO NODE 151.00 IS CODE = 10 ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I ;;)0, I 11 * *** *.* * * * * * * * * * * * * * * * ** * * * * * * * * * **** * * * * *** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * FLOW PROCESS FROM NODE 140.00 TO NODE 141.00 IS CODE = 21 Ir-:::::~;~~~~~-~~;~~~-~~~;~~~-~~~~~-~~~~~~~:::::------------------------ ---------------------------------------------------------------------------- ----------.------------------------------------------------------------------ I II I I I I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 330.00 UPSTREAM ELEVATION = 114.80 DOWNSTRE.~ ELEVATION = 101.50 ELEVATION DIFFERENCE = 13.30 TC = .323*[( 330.00**3)/( 13.30)]**.2 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = SUBAREA RUNOFF(CFS) = 1.11 TOTAL AREA (ACRES) = .42 = 6.239 3.090 .8544 TOTAL RUNOFF(CFS) 1.11 1*************************************************************************** FLOW PROCESS FROM NODE 141.00 TO NODE 143.00 IS CODE = 3 ---------------------------------------------------------------------------- I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< II=~;;;:=;;=;~~:=;:===;~~=;:~:=;;;;=;;===;~~=;:~:;;========================== PIPEFLOW VELOCITY(FEET/SEC.) = 3.8 I UPSTREAM NODE ELEVATION = 97.35 DOWNSTRE./l,M NODE ELEVATION = 96.50 I FLOWLENGTH(FEET) = 85.00 MANNING'S N .013 ESTIMATED PIPE DIAMETER (INCH) = 9.00 NUMBER OF PIPES 1 PIPEFLOW THRU SUBAREA (CFS) 1.11 I TR."VEL TIME (MIN.) = . 38 TC (MIN.) = 6.62 ~******I********************************************************************* FLOW PROCESS FROM NODE 141.00 TO NODE 143.00 IS CODE = 1 It------.--------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< Ir=;~;~=~;;;=~;=;;;;::;=:==~============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME OF CONCENTRATION (MIN.) = 6.62 30 I :e'l I RAINFALL INTENSITY (INCH/HR) = 2.99 TOTAL STREAM AREA (ACRES) = .42 PEAK FLOW RATE (CFS) AT CONFLUENCE = 1.11 **************************************************************************** 'I FLOW PROCESS FROM NODE 142.00 TO NODE 143.00 IS CODE = 21 : --------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< :~=========================================================================== ASSUMED INITIAL SUBAREA UNIFORM 'I DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 75.00 I UPSTREAM ELEVATION = 102.30 DOWNSTREAM ELEVATION = 99.00 I ELEVATION DIFFERENCE = 3.30 TC = .323*[( 75.00**3)/( 3.30)]**.2 3.389 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. I 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.491 SOIL CLASSIFICATION IS "B" I ! I APARTMENT DEVELOPMENT SUBAREA RUNOFF(CFS) TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = .21 .07 .8585 TOTAL RUNOFF(CFS) = .21 1*************************************************************************** FLOW .PROCESS FROM NODE 142.00 TO NODE 143.00 IS CODE = 1 ---------------------------------------------------------------------------- I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< Ir=;;;~~=;;~:;;=;;=~;;;~~~:==;========================~~=============~====== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: I TIME OF CONCENTRATION (MIN. ) 5.00 RAINFALL INTENSITY (INCH/HR) = 3.49 TOTAL STREAM AREA(ACRES) = .07 I PEAK FLOW RATE (CFS) AT CONFLUENCE = I I I I .21 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 1.11 2 .21 Tc INTENSITY ( INCH/HOUR) 2.992 3.491 AREA (ACRE) .42 .07 (MIN. ) 6.62 5.00 3) I *********************************WARNING********************************** I ,- 'I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. il************************************************************************** il RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. 'I ** PEAK I I I I *******i********************************************************************* STREAM NUMBER 1 2 FLOW RATE RUNOFF (CFS) 1. 05 1. 29 TABLE ** Tc INTENSITY ( INCH/HOUR) 3.491 2.992 (MIN. ) 5.00 6.62 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE ;;;; 1.29 .49 AS FOLLOWS: Tc (MIN.) = 6.62 I FLOW PROCESS FROM NODE 143.00 TO NODE 151.00 IS CODE = 3 ------.--------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I I DEPTH OF FLOW IN 9.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) = 3.9 UPSTREAM NODE ELEVATION = 96.50 DOWNSTREAM NODE ELEVATION = 94.90 FLOWLENGTH(FEET) = 160.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) 9.00 PIPEFLOW THRU SUBAREA (CFS) 1.29 TRAVEL TIME(MIN.) = .69 TC(MIN.) 6.3 INCHES ;;;; .013 NUMBER OF PIPES 1 7.30 ,***.************************************************************************ FLOW:PROCESS FROM NODE 143.00 TO NODE 151.00 IS CODE = 11 ---------------------------------------------------------------------------- I==:::::~~::~~~~~~=:~:~~:=~~:=~=~=:~~~=~~~=::~~:~~~~~=:~:~~::::::========== I STREAM I NUMBER ** MAIN STREAM CONFLUENCE DATA ** RUNOFF Tc INTENSITY (CFS) (MIN.) (INCH/HOUR) AREA (ACRE) 1J ._._~_.- ------- I 1 1. 29 7.30 2.834 .49 I ** MEMORY BANK # 1 CONFLUENCE DATA * * I STREAM RUNOFF Tc INTENSITY AREA NUl'4BER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) 1 2.91 6.76 2.957 1. 69 I *********************************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. '1************************************************************************** I I I CO!v1PUTED CONFLUENCE PEAK FLOW RATE (CFS) I TOTAL AREA (ACRES) = * * PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 4.11 6.76 2.957 2 4.08 7.30 2.834 ESTIMATES ARE = 4.11 2.18 AS FOLLOWS: Tc (MIN.) = 6.76 11*************************************************************************** FLOW PROCESS FROM NODE 143.00 TO NODE 151.00 IS CODE = 10 .--------------------------------------------------------------------------- >>>>>MAIN-STREAM MEMORY COPIED ONTO MEMORY BANK # 2 <<<<< ----.------------------------------------------------------------------------ ---------------------------------------------------------------------------- I ~******'********************************************************************* . FLOW PROCESS FROM NODE 150.00 TO NODE 151.00 IS CODE = 21 ---------------------------------------------------------------------------- I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< -=========================================================================== I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC = 'K* [ (LENGTH**3) / (ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-LENGTH = 145.00 UPSTREAM ELEVATION = 101.40 DOWNSTREAM ELEVATION = 98.50 I ELEVATION DIFFERENCE = 2.90 TC = .323*[( 145.00**3)/( 2.90)]**.2 I 10 ,YEAR RAINFALL INTENSITY (INCH/HOUR) = = 5.166 3.429 '3~ I Ie 11 I SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT SUBAREA RUNOFF(CFS) = TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = .8579 .53 .18 TOTAL RUNOFF (CFS) = .53 il*************************************************************************** , FLOW PROCESS FROM NODE 150.00 TO NODE 151.00 IS CODE = 11 ---------------------------------------------------------------------------- 'I >>>>>C0NFLUENCE MEMORY BANK # 2 WITH THE MAIN-STREAM MEMORY<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I ** MAIN STREAM CONFLUENCE DATA ** STREAM RUNOFF Tc INTENSITY AREA I NUMBER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) 1 .53 5.17 3.429 .18 I ** MEMORY BANK # 2 CONFLUENCE DATA ** STREAM RUNOFF Tc INTENSITY AREA I NUMBER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) 1 4.11 6.76 2.957 2.18 1* * * * * *.* * * * * * * * * * ** * * * * * ** * * * * * * * *WARNING* **** * * * * * * * * ** ** * * * * * * * * * * * * * * * * * IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. I*****~******************************************************************** I I I I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 3.67 5.17 3.429 2 4.56 6.76 2.957 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE ;;: 4.56 2.36 AS FOLLOWS: Tc (MIN.) = 6.76 It*************************************************************************** FLOW:PROCESS FROM NODE 151.00 TO NODE 152.00 IS CODE = 3 Ir-:::::~~~~~;~-~~~~;~~~-;~~~~;~~~-;~~~-~~~~~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< It=========================================================================== j....) I DEPTH OF FLOW IN 12.0 INCH PIPE IS 5.8 INCHES il PIPEFLOW VELOCITY(FEET/SEC.) 12.3 UPSTREAM NODE ELEVATION = 94.90 DOWNSTREAM NODE ELEVATION = 92.23 II FLOWLENGTH(FEET) = 30.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER(INCH) = 12.00 NUMBER OF PIPES 1 'I PIPEFLOW THRU SUBAREA (CFS) = 4.56 TRAVEL TIME(MIN.) = .04 TC(MIN.) = 6.80 I **************************************************************************** I FLOW PROCESS FROM NODE 155.50 TO NODE 155.00 IS CODE = 7 ------.--------------------------------------------------------------------- >>>>>USER SPECIFIED HYDROLOGY INFORMATION AT NODE<<<<< 11=========================================================================== USER-SPECIFIED VALUES ARE AS FOLLOWS: TC(MIN) = 6.80 RAIN INTENSITY (INCH/HOUR) = 2.95 TOTAL AREA(ACRES) = 1.02 TOTAL RUNOFF (CFS) = I I *******1********************************************************************* 3.80 I-~~~~-~~~=~::_~~~~-~~~~---~~~~~~-~~-~~~~---~~~~~~-~:-=~~~_:_--~------------ >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< I ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I DEPTH OF FLOW IN 12.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) = 9.4 UPSTREAM NODE ELEVATION = 116.97 DOWNSTREAM NODE ELEVATION = 102.37 FLOWLENGTH(FEET) = 295.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 12.00 PIPEFLOW THRU SUBAREA (CFS) 3.80 TRAVEL TIME(MIN.) = .52 TC(MIN.) = 6.1 INCHES == .013 NUMBER OF PIPES 1 7.32 f*************************************************************************** FLOW.PROCESS FROM NODE 155.00 TO NODE 161.00 IS CODE = 1 ---------------------------------------------------------------------------- I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< -=================-========================================================== TOTAL NL~BER OF STREAMS = 2 I CONFDUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) 7.32 I RAINFALL INTENS ITY (INCH/HR) = 2 . 83 STREAM 1 ARE: 35 I TOTAL STREAM AREA(ACRES) = 1.02 il PEAK FLOW RATE (CFS) AT CONFLUENCE = 3.80 !~*************************************************************************** FLOW PROCESS FROM NODE 160.00 TO NODE 161.00 IS CODE = 21 :1--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< I=========~~~~;~=;:;;;~=~~;;;;~=~;;~;:==================================== DEVELOPMENT IS APARTMENT I TC = K" [(LENGTH**3) / (ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 300.00 I UPST~EAM ELEVATION = 122.00 DOWNSTREAM ELEVATION = 108.70 ELEVATION DIFFERENCE = 13.30 I TC = .323*[( 300.00**3)/( 13.30)]**.2 = 5.893 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.189 SOIL CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8555 SUBAREA RUNOFF (CFS) = 1.17 I TOTAL AREA (ACRES) = .43 TOTAL RUNOFF(CFS) = 1.17 ~*************************************************************************** FLOW PROCESS FROM NODE 160.00 TO NODE 161.00 IS CODE = 1 II-:::::~~~~~~~;~-~~~~~~~~~~;-~;~~~-;~~-~~~;~~~~~~:::::--------------------- >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< I ~=========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME .OF CONCENTRATION (MIN.) = 5.89 RAINFALL, INTENSITY (INCH/HR) = 3.19 I TOTAL STREAM AREA(ACRES) = .43 PEAK.FLOW RATE(CFS) AT CONFLUENCE = I I I 1.17 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 3.80 2 1.17 Tc INTENSITY ( INCH/HOUR) 2.830 3.189 AREA (ACRE) 1. 02 .43 (MIN. ) 7.32 5.89 * * * * * * ** * * * * * * * * *.* * * * * * * * * * * * * * * *WARNING* * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED 3C. I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA ~I' WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ******.******************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I I I I I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN.) ( INCH/HOUR) 1 4.23 5.89 3.189 2 4.84 7.32 2.830 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE = 4.84 1.45 AS FOLLOWS: Tc (MIN.) = 7.32 *******,********************************************************************* I FLOW :PROCESS FROM NODE 161.00 TO NODE 171.00 IS CODE = 3 I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I DEPTH OF FLOW IN 12.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) = 7.8 UPSTREAM NODE ELEVATION = 102.37 DOWNSTREAM NODE ELEVATION = 98.60 FLOWLENGTH(FEET) = 140.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 12.00 PIPEFLOW THRU SUBAREA (CFS) = 4.84 TRAVEL TIME(MIN.) = .30 TC(MIN.) 8.9 INCHES ;:: .013 NUMBER OF PIPES 1 7.62 It******'********************************************************************* FLOW PROCESS FROM NODE 161.00 TO NODE 171.00 IS CODE = 1 .--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT I TIME OF CONCENTRATION (MIN. ) 7.62 RAINFALL INTENSITY (INCH/HR) = 2.77 TOTAL STREAM AREA (ACRES) = 1.45 I PEAK FLOW RATE (CFS) AT CONFLUENCE = STREAM 1 ARE: 4.84 ,- j I I '1[*************************************************************************** FLOW PROCESS FROM NODE 170.00 TO NODE 171.00 IS CODE = 21 ~--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< It========:;;~;~=;:;;;:~=;~::;;:=~;;~;:==================================== .DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 210.00 I UPSTREAM ELEVATION = 113.60 DOWNSTREAM ELEVATION = 103.60 ELEVATION DIFFERENCE = 10.00 I TC = . 323 * [ ( 210 . 00 * * 3) / ( 10 . 00) ] * * . 2 = 5 . 037 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.477 I SOIL .CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8583 SUBAREA RUNOFF (CFS) = .93 I TOTAL AREA (ACRES) = .31 TOTAL RUNOFF(CFS) = .93 ~******.********************************************************************* FLOW PROCESS FROM NODE 170.00 TO NODE 171.00 IS CODE = 1 1--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< =========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 5.04 I RAINFALL INTENSITY (INCH/HR) = 3.48 TOTAL STREAM AREA (ACRES) = .31 PEAK FLOW RATE(CFS) AT CONFLUENCE = I I I .93 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 4.84 2 .93 Tc INTENSITY ( INCH/HOUR) 2.768 3.477 AREA (ACRE) 1. 45 .31 (MIN. ) 7.62 5.04 * * * * * *J* * * * * * * * * * * * * * * * ** *** * * * * * *WARNING* * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA I WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ,- ) l. I II I I I I I ************************************************************************** RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. * * PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUlIllBER (CFS) (MIN. ) ( INCH/HOUR) 1 4.12 5.04 3.477 2 5.58 7.62 2.768 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE = 5.58 1. 76 AS FOLLOWS: Tc (MIN.) = 7.62 1*************************************************************************** FLOW PROCESS FROM NODE 171.00 TO NODE 172.00 IS CODE = 3 I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< II=~;:;:=:;=;~::=;:==~:~~=;:~:=:;:;=;;==~~~~=;:~:;;========================== PIPEFLOW VELOCITY(FEET/SEC.) = 4.5 I UPSTREAM NODE ELEVATION = 98.60 DOWNSTREAM NODE ELEVATION = 98.32 I FLOWLENGTH (FEET) = 52.00 MANNING'S N .013 ESTIMATED PIPE DIAMETER (INCH) 18.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA (CFS) 5.58 I TRlWEL TIME(MIN.) = .19 TC(MIN.) = 7.82 ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I END OF STUDY SUMMARY: PEAK FLOW RATE(CFS) = 5.58 Tc(MIN.) = 7.82 TOTAL AREA (ACRES) = 1.76 It=========================================================================== END OF RATIONAL METHOD ANALYSIS I I I I ")0. I 11*************************************************************************** RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM BASED ON I I I I I ************************** DESCRIPTION I IN 13122 - TRACT NO. 23304 DEVELOPED CONDITION 10-YR, 1-HR STORM RIVERSIDE COUNTY FLOOD CONTROL & WATER CONSERVATION DISTRICT (RCFC&WCD) 1978 HYDROLOGY MANUAL (c) Copyright 1982-96 Advanced Engineering Software (aes) Ver. 1.5A Release Date: 01/01/96 License ID 1261 Analysis prepared by: 5620 RICK ENGINEERING COMPANY WATER RESOURCES DIVISION FRIARS ROAD, SAN DIEGO, CA (619) 291-0707 92110 OF STUDY ************************** * EVENT FOR TRIBUTARY AREAS SOUTH * * OF LONG CANYON WASH "" -- MODELED BY S. M. L. ON AUGUST 26, 1998 * 1******'******************************************************************** I FILE NAME: 13122B.DAT TIME/DATE OF STUDY: 14:48 8/26/1998 I USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: I USER SPECIFIED STORM EVENT(YEAR) = 10.00 SPECIFIED MINIMUM PIPE SIZE (INCH) = 4.00 SPECI.FIED PERCENT OF GRADIENTS (DECIMAL) TO USE I 10-YEAR STORM 10-MINUTE INTENSITY (INCH/HOUR) = 10-YEAR STORM 60-MINUTE INTENSITY (INCH/HOUR) = I 100-YEAR STORM 10-MINUTE INTENSITY (INCH/HOUR) 100-YEAR STORM 60-MINUTE INTENSITY (INCH/HOUR) SLOPE OF 10-YEAR INTENSITY-DURATION CURVE = I SLOPE OF 100-YEAR INTENSITY-DURATION CURVE = COMPUTED RAINFALL INTENSITY DATA: I STORM EVENT = 10.00 I-HOUR INTENSITY (INCH/HOUR) SLOPE OF INTENSITY DURATION CURVE = .5506 RCFC&WCD HYDROLOGY MANUAL "C"-VALUES USED I NOTE: COMPUTE CONFLUENCE VALUES ACCORDING TO RCFC&WCD HYDROLOGY MANUAL AND IGNORE OTHER CONFLUENCE COMBINATIONS FOR DOWNSTREAM ANALYSES I FOR FRICTION 2.360 .880 SLOPE = .85 3.480 1.300 .5505732 .5495536 .8888 *******1********************************************************************* I FLOW PROCESS FROM NODE 200.00 TO NODE 201.00 IS CODE = 21 '"10 II , -------,--------------------------------------------------------------------- :"( >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< . =========================================================================== i I I I I I I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAlJ SUBAREA FLOW-LENGTH = 220.00 UPSTREAM ELEVATION = 98.00 DOWNSTRE.AM ELEVATION = 95.50 ELEVATION DIFFERENCE = 2.50 TC = .323*[( 220.00**3)/( 2.50)]**.2 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = SUBAREA RUNOFF (CFS) = .73 TOTAL AREA(ACRES) = .29 .8527 = 6.834 2.939 TOTAL RUNOFF(CFS) = .73 I FLOW PROCESS FROM NODE 201.00 TO NODE *******.********************************************************************* 9 202.00 IS CODE = I >>>>>:COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< =========================================================================== UPSTREAM NODE ELEVATION = 95.50 I DOWNSTREAM NODE ELEVATION = 94.80 CHANNEL LENGTH THRU SUBAREA (FEET) = 140.00 I "V" GUTTER WIDTH (FEET) = 4.00 GUTTER HIKE (FEET) = PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 PAVEMENT CROSSFALL(DECIMAL NOTATION) = .03000 I MAXIMUM DEPTH (FEET) = 1.00 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 1.685 I SOIL CLASSIFICATION IS "B" I I I I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8310 TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) = AVERAGE FLOWDEPTH(FEET) = .45 FLOODWIDTH(FEET) = "V" GUTTER FLOW TRAVEL TIME(MIN) = 11.94 TC(MIN) = SUBAREA AREA(ACRES) = .35 SUBAREA RUNOFF (CFS) SUMMED AREA(ACRES) = .64 TOTAL RUNOFF(CFS) END OF. SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .49 FLOODWIDTH(FEET) = 27.99 FLOW.VELOCITY(FEET/SEC.) = .20 DEPTH*VELOCITY .100 .20 25.27 18.77 .49 1. 22 .10 I FLOW :PROCESS FROM NODE 202.00 TO NODE *******i********************************************************************* 9 203.00 IS CODE = Lfl I I ---------------------------------------------------------------------------- , I >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< I =========-==----------===================================================== UPSTREAM NODE ELEVATION = 94.80 I DOWNSTRE.AM NODE ELEVATION = 93.60 CHANNEL LENGTH THRU SUBAREA (FEET) = 250.00 I "V" GUTTER WIDTH (FEET) = 4.00 GUTTER HIKE (FEET) PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 PAVEMENT CROSSFALL(DECIMAL NOTATION) = .03000 I MAXIMUM DEPTH (FEET) = 1. 00 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 1.144 I SOIL CLASSIFICATION IS "B" I I I I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8139 TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) = AVERAGE FLOWDEPTH(FEET) = .56 FLOODWIDTH(FEET) = "V" GUTTER FLOW TRAVEL TIME(MIN) = 19.17 TC(MIN) = SUBAREA AREA (ACRES) = 1.16 SUBAREA RUNOFF (CFS) SUMMED AREA (ACRES) = 1.80 TOTAL RUNOFF(CFS) END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .61 FLOODWIDTH(FEET) = 36.13 FLOW VELOCITY(FEET/SEC.) = .23 DEPTH*VELOCITY .100 .22 32.51 37.95 1. 08 2.30 .14 I FLOW PROCESS FROM NODE 203.00 TO NODE *******.********************************************************************* 3 204.00 IS CODE = I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< 4.4 INCHES ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I DEPTH OF FLOW IN 9.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) 10.7 UPSTREAM NODE ELEVATION = 90.10 I DOWNSTREAM NODE ELEVATION = 86.21 FLOWLENGTH(FEET) = 40.00 MANNING'S N I ESTIMATED PIPE DIAMETER (INCH) = 9.00 PIPEFLOW THRU SUBAREA (CFS) 2.30 I TRAVEL TIME (MIN.) = .06 TC (MIN.) = = .013 NUMBER OF PIPES = 38.01 1 1*************************************************************************** FLOW PROCESS FROM NODE 230.00 TO NODE 231.00 IS CODE = 21 I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< I ASSUMED INITIAL SUBAREA UNIFORM ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- '1J I '. I I I I I **************************************************************************** DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 65.00 UPSTREAM ELEVATION = 98.50 DOWNSTRE_~ ELEVATION = 97.10 ELEVATION DIFFERENCE = 1.40 TC = .323*[( 65.00**3)/( 1.40)]**.2 = 3.693 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.491 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8585 SUBAREA RUNOFF(CFS) = .18 TOTAL AREA(ACRES) = .06 TOTAL RUNOFF (CFS) .18 I FLOW PROCESS FROM NODE 231.00 TO NODE 241.00 IS CODE = 3 --------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ---------------------------------------------------------------------------- -------,--------------------------------------------------------------------- I I I I DEPTH 0F FLOW IN 6.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) = 4.2 UPSTREAM NODE ELEVATION = 95.55 DOWNSTREAM NODE ELEVATION = 94.65 FLOWLENGTH(FEET) = 20.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 6.00 PIPEFLOW THRU SUBAREA (CFS) = .18 TRAVEL TIME(MIN.) = .08 TC(MIN.) 1.6 INCHES .013 NUMBER OF PIPES = 1 5.08 1*************************************************************************** FLOW PROCESS FROM NODE 231.00 TO NODE 241.00 IS CODE = 1 I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< -=========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) = 5.08 I RAINFALL INTENSITY (INCH/HR) = 3.46 TOTAL STREAM AREA(ACRES) = .06 . PEAK 'FLOW RATE (CFS) AT CONFLUENCE = STREAM 1 ARE: .18 1* * * * * *,* * * * * * * * * * * * ** * * * ** * * * * * *** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * :~~ * * I FLOW PROCESS FROM NODE 240.00 TO NODE 241.00 IS CODE = 21 'It--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< 1_=========================================================================== ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 100.00 UPSTREAM ELEVATION = 98.50 I DOWNSTREAM ELEVATION = 96.30 ELEVATION DIFFERENCE = 2.20 .1 TC = .323*[( 100.00**3)/( 2.20)]**.2 = 4.368 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. ..'1 10 YEm~ RAINFALL INTENSITY (INCH/HOUR) = 3.491 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8585 I SUBAREA RUNOFF (CFS) = .75 TOTAL AREA(ACRES) = .25 TOTAL RUNOFF (CFS) .75 I **************************************************************************** I FLOW PROCESS FROM NODE 240.00 TO NODE 241.00 IS CODE = 1 ---------"------------------------------------------------------------------ >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< I ----------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) 5.00 RAINFALL INTENSITY (INCH/HR) = 3.49 TOTAL STREAM AREA (ACRES) = .25 PEAK FLOW RATE (CFS) AT CONFLUENCE = STREAM 2 ARE: .75 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 .18 2 .75 Tc INTENSITY ( INCH/HOUR) 3.461 3.491 AREA (ACRE) .06 .25 (MIN. ) 5.08 5.00 I*********.~***********************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. *****.********************************************************************* I y'"\ I '. I I I COMPUTED CONFLUENCE PEAK FLOW RATE(CFS) I TOTAL AREA (ACRES) = RAINFAlliL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 .93 5.00 3.491 2 .92 5.08 3.461 ESTIMATES ARE = .93 .31 AS FOLLOWS: Tc (MIN.) = 5.00 ~******;********************************************************************* FLOW PROCESS FROM NODE 241.00 TO NODE 251.00 IS CODE = 3 1- - - - - -.- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< 1=========================================================================== DEPTH OF FLOW IN 9.0 INCH PIPE IS 6.4 INCHES I PIPEFL0W VELOCITY(FEET/SEC.) = 2.7 UPSTREAM NODE ELEVATION = 94.65 DOWNSTREAM NODE ELEVATION = 94.15 I FLOWLENGTH (FEET) = 100.00 MANNING'S N .013 ESTIMATED PIPE DIAMETER (INCH) = 9.00 NUMBER OF PIPES 1 I PIPEFLOW THRU SUBAREA (CFS) = .93 TRAVEL TIME(MIN.) = .61 TC(MIN.) 5.61 11******,********************************************************************* I-~~~~-~~~~~~~-~~~~-~~~~---~~~~~~-~~-~~~~---~~~~~~-~~-~~~~_:_--~------------ >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< It=========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) 5.61 RAINFALL INTENSITY (INCH/HR) = 3.28 I TOTAL STREAM AREA (ACRES) = . 31 PEAK FLOW RATE(CFS) AT CONFLUENCE = .93 I ********.k******************************************************************* I FLOW PROCESS FROM NODE 250.00 TO NODE 251.00 IS CODE = 21 Lr; I ;1 >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< =========================================================================== ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC ~ K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH ~ 100.00 UPSTREAM ELEVATION ~ 97.60 DOWNSTREAM ELEVATION ~ 95.90 ELEVATION DIFFERENCE ~ 1.70 TC ~ .323*[( 100.00**3)/( 1.70)]**.2 4.599 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 10 YEAR RAINFALL INTENSITY (INCH/HOUR) ~ 3.491 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT ~ .8585 SUBAREA RUNOFF(CFS) ~ .96 TOTAL AREA(ACRES) ~ .32 TOTAL RUNOFF(CFS) .96 ~******'********************************************************************* FLOW PROCESS FROM NODE 250.00 TO NODE 251.00 IS CODE ~ 1 II-:::::~~~~~~~;~-~~~~~~~~~~;-~;~~~-;~~-~~~;~~~~~~:::::--------------------- >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< It~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ TOTAL NUMBER OF STREAMS ~ 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION (MIN.) ~ 5.00 RAINFALL INTENSITY (INCH/HR) ~ 3.49 I TOTAL STREAM AREA (ACRES) ~ . 32 PEAK .FLOW RATE (CFS) AT CONFLUENCE ~ .96 I I I ** CONFLUENCE DATA *.. STREAM RUNOFF Tc INTENSITY AREA NUMBER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) 1 .93 5.61 3.277 .31 2 .96 5.00 3.491 .32 *********************************WARNING********************************** I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. 1************************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO 'tb I Iii I . I I I I CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUl"lBER (CFS) (MIN. ) ( INCH/HOUR) 1 1. 78 5.00 3.491 2 1. 83 5.61 3.277 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE 1. 78 .63 AS FOLLOWS: Tc (MIN.) = 5.00 **************************************************************************** I FLOW PROCESS FROM NODE 251.00 TO NODE 261.00 IS CODE = 3 I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I DEPTH OF FLOW IN 12.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) = 4.3 I UPSTREAM NODE ELEVATION = 94.15 DOWNSTREAM NODE ELEVATION = 92.90 FLOWLENGTH(FEET) = 125.00 MANNING'S N I ESTIMATED PIPE DIAMETER (INCH) 12.00 PIPEFLOW THRU SUBAREA (CFS) = 1.78 I TRAVEL TIME (MIN.) = .49 TC (MIN.) = 6.3 INCHES ;::;: .013 NUMBER OF PIPES 1 5.49 It*************************************************************************** FLOW PROCESS FROM NODE 251.00 TO NODE 261.00 IS CODE = 1 ,--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) 5.49 I RAINFALL INTENSITY (INCH/HR) = 3.32 TOTAL STREAM AREA(ACRES) = .63 I PEAK FLOW RATE(CFS) AT CONFLUENCE = STREAM 1 ARE: 1. 78 ~******.********************************************************************* FLOW PROCESS FROM NODE 260.00 TO NODE 261.00 IS CODE = 21 11--------------------------------------------------------------------------- LIl I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< , ilt========:;;~;~=;:;;;:~=;~;;;:=~;;~;:==================================== DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 230.00 .1 UPSTREAM ELEVATION = 98.00 DOWNSTREAM ELEVATION = 95.70 ELEVATION DIFFERENCE = 2.30 I TC = .323*[( 230.00**3)/( 2.30)]**.2 = 7.137 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 2.870 I SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8519 SUBAREA RUNOFF(CFS) 1.56 I TOTAL AREA(ACRES) = .64 TOTAL RUNOFF(CFS) = 1.56 11******,********************************************************************* FLOW.PROCESS FROM NODE 260.00 TO NODE 261.00 IS CODE = 1 11---------------------..----------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< =========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 7.14 I RAINFALL INTENSITY (INCH/HR) = 2.87 TOTAL STREAM AREA (ACRES) = .64 PEAK FLOW RATE (CFS) AT CONFLUENCE = I I I 1. 56 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 1. 78 2 1. 56 Tc INTENSITY ( INCH/HOUR) 3.316 2.870 AREA (ACRE) .63 .64 (MIN. ) 5.49 7.14 *********************************WARNING********************************** I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA I WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ************************************************************************** I RAINFALL INTENSITY A-~D TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I ~Ir. I 1. I I I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 2.99 5.49 3.316 2 3.11 7.14 2.870 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) ~ ESTIMATES ARE ;; 2.99 1. 27 AS FOLLOWS: Tc (MIN.) ~ 5.49 1*************************************************************************** FLOW PROCESS FROM NODE 261.00 TO NODE 262.00 IS CODE ~ 3 I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< It~~;;;:~;;~;~;:~;:~~~;~~~;:~:~;;;;~;;~~~;~;~;:~:;;~~~~~~~~~~~~~~~~~~~~~~~~~~ PIPEFLOW VELOCITY(FEET/SEC.) ~ 10.5 I UPSTREAM NODE ELEVATION ~ 92.90 DOWNSTREAM NODE ELEVATION 92.03 I FLOWLENGTH(FEET) ~ 11.00 MANNING'S N ~ .013 ES'rIMATED PIPE DIAMETER (INCH) ~ 9.00 NUMBER OF PIPES 1 PIPEFLOW THRU SUBAREA (CFS) ~ 2.99 I TRAVEL TIME(MIN.) ~ .02 TC(MIN.) ~ 5.51 ~******'********************************************************************* FLOW PROCESS FROM NODE 261.00 TO NODE 262.00 IS CODE ~ 10 11--------------------------------------------------------------------------- >>>>>MAIN-STREAM MEMORY COPIED ONTO MEMORY BANK # 1 <<<<< 'Ir~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~*************************************************************************** FLOW PROCESS FROM NODE 210.50 TO NODE 210.00 IS CODE ~ 7 1_-------------------------------------------------------------------------- >>>>>USER SPECIFIED HYDROLOGY INFORMATION AT NODE<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I USER-SPECIFIED VALUES ARE AS FOLLOWS: TC(MIN) ~ 11.60 RAIN INTENSITY (INCH/HOUR) ~ 2.20 I TOTAL AREA(ACRES) ~ 13.40 TOTAL RUNOFF(CFS) ~ 14.00 ,-\"i ~******i********************************************************************* I FLOW PROCESS FROM NODE 210.00 TO NODE 221.00 IS CODE ~ 3 '.1--------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< i~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ DEPTH 0F FLOW IN 21.0 INCH PIPE IS 13.7 INCHES .1 PIPEFLOW VELOCITY(FEET/SEC.) ~ 8.4 UPSTREAM NODE ELEVATION ~ 95.06 DOWNSTREAM NODE ELEVATION ~ 92.58 I FLOWLENGTH(FEET) ~ 157.00 MANNING'S N .013 ESTIMATED PIPE DIAMETER(INCH) 21.00 NUMBER OF PIPES 1 I PIPEFLOW THRU SUBAREA (CFS) 14.00 TRAVEL TIME(MIN.) ~ .31 TC(MIN.) ~ 11.91 1[*************************************************************************** I-~~~~-~~~~~~~-~~~~-~~~~---~~~~~~-~~-~~~~---~~~~~~-~~-~~~~-:---~------------ >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< It~;~;~~~:;;~~;~;;;;::;~:~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) 11.91 RAINFALL INTENSITY (INCH/HR) ~ 2.16 I TOTAL STREAM AREA (ACRES) ~ 13 .40 PEAK FLOW RATE (CFS) AT CONFLUENCE ~ 14.00 I **************************************************************************** I FLOW PROCESS FROM NODE 220.00 TO NODE 221.00 IS CODE ~ 21 --------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ASSUMED INITIAL SUBAREA UNIFORM I DEVELOPMENT IS APARTMENT TC ~ 'K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-LENGTH ~ 260.00 UPSTREAM ELEVATION ~ 99.10 DOWNSTREAM ELEVATION ~ 96.50 I ELEVATION DIFFERENCE ~ 2.60 TC ~ .323*[( 260.00**3)/( 2.60)]**.2 10 ,YEAR RAINFALL INTENSITY (INCH/HOUR) ~ I SOIL CLASSIFICATION IS "B" APAR~MENT DEVELOPMENT RUNOFF COEFFICIENT I SUBAREA RUNOFF (CFS) ~ 1.43 7.495 2.794 .8509 SO I :1 TOTAL AREA (ACRES) ; .60 TOTAL RUNOFF(CFS) ; 1. 43 *******,********************************************************************* :1 FLOW PROCESS FROM NODE 220.00 TO NODE 221.00 IS CODE; 1 il >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< . >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< I;;;~;~;~;;:;~;;;;:;::;;:;;~;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: I TIME OF CONCENTRATION(MIN.); 7.50 RAINFALL INTENSITY (INCH/HR) ; 2.79 TOTAL STREAM AREA(ACRES); .60 1 PEAK FLOW RATE (CFS) AT CONFLUENCE; I I 1.43 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 14.00 2 1. 43 Tc (MIN. ) 11.91 7.50 INTENSITY ( INCH/HOUR) 2.165 2.794 AREA (ACRE) 13 .40 .60 I*********************************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. 1************************************************************************** RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO I CONFLUENCE FORMULA USED FOR 2 STREAMS. I * * PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) I 1 10.24 7.50 2.794 2 15.11 11.91 2.165 I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE (CFS) 15.11 Tc (MIN. ) ; 11.91 I TOTAL AREA (ACRES) ; 14.00 11*************************************************************************** FLOW PROCESS FROM NODE 221.00 TO NODE 262.00 IS CODE; 3 It--------------------------------------------------------------------------- ':)) I I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< =========================================================================== I I I I DEPTH OF FLOW IN 27.0 INCH PIPE IS 17.1 INCHES PIPEFLOW VELOCITY(FEET/SEC.) = 5.7 UPSTREAM NODE ELEVATION = 92.58 DOWNSTREAM NODE ELEVATION = 92.03 FLOWLENGTH(FEET) = 105.00 MANNING'S N ESTIMATED PIPE DIAMETER(INCH) = 27.00 PIPEFLOW THRU SUBAREA(CFS) = 15.11 TRAVEL TIME(MIN.) = .31 TC(MIN.) = 12.22 .013 NUMBER OF PIPES = 1 **************************************************************************** I FLOW PROCESS FROM NODE 221.00 TO NODE 262.00 IS CODE = 11 I >>>>>CONFLUENCE MEMORY BANK # 1 WITH THE MAIN-STREAM MEMORY<<<<< =========================================================================== I ** MAIN STREAM CONFLUENCE DATA ** STREAM RUNOFF Tc INTENSITY AREA I NUMBER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) 1 15.11 12.22 2.135 14.00 I ** MEMCDRY BANK # 1 CONFLUENCE DATA * * STREAM RUNOFF Tc INTENSITY AREA I NUMBER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) 1 2.99 5.51 3.311 1. 27 I * * * * * *.* * * * * * * * * * * * * * * * * * * * * * * * * **WARNING* * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE'RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. * * ****:* * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * ** * * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * I I I COMPUTED CONFLUENCE I PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 9.79 5.51 3.311 2 17.03 12.22 2.135 ESTIMATES ARE 17.03 15.27 AS FOLLOWS: Tc (MIN.) = 12.22 s~ I I It*************************************************************************** FLOW PROCESS FROM NODE 262.00 TO NODE 270.00 IS CODE; 3 I--:::::~~~;~;~-~~~~;~~~-;~~~~;~~~-;~~~-~~~~~~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ,It;~::;:;~;;;~~:;;:;;;:~~;;:~:;:;::;;;;;~;~~;;:~::;;;;;;;;;;;;;;;;;;;;;;;;;;; '. PIPEFLOW VELOCITY (FEET/SEC. ) 7.2 UPSTREAM NODE ELEVATION; 92.03 DO\~STRE.AM NODE ELEVATION 91.43 I I FLOWLENGTH (FEET); 65.00 MANNING'S N; .013 ,. ESTIMATED PIPE DIAMETER(INCH) ; 24.00 NUMBER OF PIPES; I PIPEFLOW THRU SUBAREA(CFS); 17.03 TRAVEL TIME(MIN.); .15 TC(MIN.); 12.37 1 Il*************************************************************************** FLOW PROCESS FROM NODE 270.00 TO NODE 292.00 IS CODE; 3 IJ--------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< =========================================================================== DEPTH OF FLOW IN 24.0 INCH PIPE IS 17.7 INCHES I PIPEFLOW VELOCITY(FEET/SEC.); 6.8 UPSTREAM NODE ELEVATION; 91.43 I DOWNSTREAM NODE ELEVATION 90.89 FLOWLENGTH(FEET); 65.00 MANNING'S N ESTIMATED PIPE DIAMETER(INCH) 24.00 I PIPEFLOW THRU SUBAREA (CFS); 17.03 TRAVEL TIME(MIN.); .16 TC(MIN.); 12.53 I .013 NUMBER OF PIPES 1 *******.********************************************************************* I FLOW PROCESS FROM NODE 270.00 TO NODE 292.00 IS CODE; 10 ---------------------------------------------------------------------------- I >>>>>MAIN-STREAM MEMORY COPIED ONTO MEMORY BANK # 2 <<<<< :;:::::::::::::;::::::: =:=:::::::::::::::::::::::::::::::::::::::: ==::::::::::::::::::::::::::::::::::: ====::::;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: ==::::::::::::::::::::::::::;::::::::::::::::: =:::;:::::::;; =::;; ==:;:::;:::::::::::::::::::::::::::::::::::::::::: ==::::: === ~*************************************************************************** FLOW.PROCESS FROM NODE 280.00 TO NODE 281.00 IS CODE; 21 ~--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< It;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; S~ ~- ~- I I I I I I I *******,********************************************************************* ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 150.00 UPSTREAM ELEVATION = 99.00 DOWNSTREAM ELEVATION = 98.88 ELEVATION DIFFERENCE = .12 TC = .323*[( 150.00**3)/( .12)]**.2 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = SOIL CLASSIFICATION IS "B" AP.~TMENT DEVELOPMENT RUNOFF COEFFICIENT = SUBAREA RUNOFF(CFS) = .48 TOTAL AREA (ACRES) = . 24 = 9.968 2.388 .8451 TOTAL RUNOFF(CFS) .48 I FLOW PROCESS FROM NODE 281.00 TO NODE 291.00 IS CODE = 3 : -----_._-------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< I -------,--------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I DEPTH OF FLOW IN 6.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) = 4.3 UPSTREAM NODE ELEVATION = 97.30 DOWNSTREAM NODE ELEVATION 92.50 FLOWLENGTH(FEET) = 190.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) 6.00 PIPEFL0W THRU SUBAREA (CFS) .48 TRAVEL TIME(MIN.) = .73 TC(MIN.) = 3.3 INCHES .013 NUMBER OF PIPES = 1 10.70 1******:********************************************************************* FLOW.PROCESS FROM NODE 281.00 TO NODE 291.00 IS CODE = 1 I==:::::~~~~~~~~~=~~~~~~~~~~~=~~:~~=:~:=~~~:~~~~~~:::::===================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT TIME .OF CONCENTRATION(MIN.) = 10.70 I RAINFALL INTENSITY (INCH/HR) = 2.30 TOTAL STREAM AREA(ACRES) = .24 I PEAK FLOW RATE(CFS) AT CONFLUENCE = STREAM 1 ARE: .48 1******1********************************************************************* jy I FLOW PROCESS FROM NODE 290.00 TO NODE 291.00 IS CODE = 21 f--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< I=========:;;~;~=;:;;;:~=;~;;;;:=~;;~;:==================================== DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIA]~ SUBAREA FLOW-LENGTH = 130.00 UPSTREAM ELEVATION = 97.20 'I DOTtlNSTRE.AM ELEVATION = 95.10 ELEVATION DIFFERENCE = 2.10 I TC = . 323 * [ ( 13 0 . 00 * * 3) / ( 2 . 10) ] * * . 2 = 5 . 161 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.431 SOIL CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8579 SUBAREA RUNOFF (CFS) = 1.06 I TOTAL AREA (ACRES) = . 36 TOTAL RUNOFF (CFS) 1. 06 It******'********************************************************************* FLOW.PROCESS FROM NODE 290.00 TO NODE 291.00 IS CODE = 1 1_-------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< It=========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME .OF CONCENTRATION(MIN.) = 5.16 RAINFALL INTENSITY (INCH/HR) = 3.43 I TOTAL STREAM AREA (ACRES) = .36 PEAK FLOW RATE (CFS) AT CONFLUENCE = I I . 1. 06 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 .48 2 1.06 Tc INTENSITY ( INCH/HOUR) 2.297 3.431 AREA (ACRE) .24 .36 (MIN. ) 10.70 5.16 *********************************WARNING********************************** I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. 1************************************************************************** I RAINFALL, INTENSITY AND TIME OF CONCENTRATION RATIO ss Ii:.___ I I. II '. I I CONFLUENCE FORMULA USED FOR 2 STREAMS. * * PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 1. 29 5.16 3.431 2 1.19 10.70 2.297 COMPUTED CONFLUENCE PEAK :FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE :;: 1.29 .60 AS FOLLOWS: Tc (MIN.) = 5.16 *******;********************************************************************* I FLOW PROCESS FROM NODE 291.00 TO NODE 292.00 IS CODE = 3 ---------------------------------------------------------------------------- I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I DEPTH OF FLOW IN 9.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) = 6.8 I UPSTREAM NODE ELEVATION = 92.50 DOWNSTREAM NODE ELEVATION = 90.89 FLOWLENGTH(FEET) = 38.00 MANNING'S N I ESTIMATED PIPE DIAMETER (INCH) = 9.00 PIPEFLOW THRU SUBAREA (CFS) 1.29 I TRAVEL TIME (MIN.) = .09 TC (MIN.) = 4.0 INCHES = .013 NUMBER OF PIPES 1 5.25 It*************************************************************************** FLOW PROCESS FROM NODE 291.00 TO NODE 292.00 IS CODE = 11 1_-------------------------------------------------------------------------- >>>>>CONFLUENCE MEMORY BANK # 2 WITH THE MAIN-STREAM MEMORY<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I ** MAIN STREAM CONFLUENCE DATA ** I STREAM RUNOFF Tc INTENSITY AREA NUMBER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) 1 1. 29 5.25 3.397 .60 I ** MEMORY BANK # 2 CONFLUENCE DATA * * . STREAM RUNOFF Tc INTENSITY AREA NUMBER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) 1 17.03 12.53 2.105 15.27 I 50 I * ** * * *1* * * * * * * * * * * * * * * * * * * * * * * * * * *WARNING* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *** !I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. 1******:******************************************************************** I ** PEAK I I I STREAM NUMBER 1 2 FLOW RATE RUNOFF (CFS) 8.44 17.83 TABLE ** Tc (MIN. ) 5.25 12.53 INTENSITY ( INCH/HOUR) 3.397 2.105 COMPUTED CONFLUENCE PEAK FLOW RATE(CFS) TOTAL AREA (ACRES) = ESTIMATES ARE = 17.83 15.87 AS FOLLOWS: Tc (MIN.) = 12.53 ~*************************************************************************** FLOW PROCESS FROM NODE 292.00 TO NODE 302.00 IS CODE = 3 11--------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< =========================================================================== DEPTH OF FLOW IN 24.0 INCH PIPE IS 18.7 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) = 6.8 UPSTREAM NODE ELEVATION = 90.89 II DOWNSTREAM NODE ELEVATION = 90.16 FLOWLENGTH(FEET) = 90.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER(INCH) 24.00 NUMBER OF PIPES = 1 I PIPEFLOW THRU SUBAREA (CFS) 17.83 TRAVEL TIME(MIN.) = .22 TC(MIN.) = 12.75 I *******.********************************************************************* l_~~~~_~~~~~::_~~~~_~~~~___~~~~~~_~~_~~~~___=~~~~~_=:_~~~~_:___=____________ I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< =========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 12.75 I RAINFALL INTENSITY (INCH/HR) = 2.09 TOTAL STREAM AREA (ACRES) = 15.87 PEAK FLOW RATE (CFS) AT CONFLUENCE = I 17.83 S7 I If ** * * * *i* * * * * * * ** * * * * * * * * * * * * * * * * * * ** ** * * * * * * ** * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * FLOW.PROCESS FROM NODE 300.00 TO NODE 301.00 IS CODE = 21 I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-LENGTH = 70.00 UPSTREAM ELEVATION = 97.60 I DOWNSTREAM ELEVATION = 95.00 ELEVATION DIFFERENCE = 2.60 TC = .323*[( 70.00**3)/( 2.60)]**.2 = 3.411 I COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.491 I SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8585 SUBAREA RUNOFF (CFS) - .99 I TOTAL AREA (ACRES) = . 33 TOTAL RUNOFF (CFS) = . 99 11******.********************************************************************* FLOW PROCESS FROM NODE 301.00 TO NODE 302.00 IS CODE = 3 1--------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< =========================================================================== DEPTH OF FLOW IN 9.0 INCH PIPE IS 3.9 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) 5.3 UPSTREAM NODE ELEVATION = 92.71 DOWNSTRE.~ NODE ELEVATION 90.16 I FLOWLENGTH(FEET) = 95.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER(INCH) = 9.00 NUMBER OF PIPES = 1 I PIPEFLOW THRU SUBAREA (CFS) = .99 TRAVEL TIME(MIN.) = .30 TC(MIN.) = 5.30 I **************************************************************************** I FLOW PROCESS FROM NODE 301.00 TO NODE 302.00 IS CODE = 1 ------,--------------------------------------------------------------------- I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< ----------------------------------------------------------------------------- ---------------------------------------------------------------------------- I TOTAL NUMBER OF STREAMS = 2 'S~ I '. I I I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM TIME OF CONCENTRATION(MIN.) = 5.30 RAINFALL INTENSITY (INCH/HR) = 3.38 TOTAL STREAM AREA(ACRES) = .33 PEAK FLOW RATE(CFS) AT CONFLUENCE = .99 2 ARE: ** CONFLUENCE DATA * ~~ STREAM RUNOFF Tc INTENSITY AREA NUMBER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) 1 17.83 12.75 2.085 15.87 2 .99 5.30 3.382 .33 1* * * * * *,* * * * * * * * * * * * * * * * * * * * * * * * * * *WARNING* * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. 1* * * * * *,* * * * * * * * * **** ** * *** * * * * * * * * ** * * * * * * * * * * * * * * *** * * * * * * * * * *** * * * * * * * * * * RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO I CONFLUENCE FORMULA USED FOR 2 STREAMS. I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) I 1 8.40 5.30 3.382 2 18.44 12.75 2.085 I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) = 18.44 Tc (MIN. ) = 12.75 I TOTAL AREA (ACRES) = 16.20 1* * * * * *,* * * * * * * * * * * * * * * * *-* * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * FLOW PROCESS FROM NODE 302.00 TO NODE 317.00 IS CODE = 3 11--------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ======;===================================================================== DEPTH OF FLOW IN 24.0 INCH PIPE IS 18.6 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) 7.1 UPSTREAM NODE ELEVATION = 90.16 I DOWNSTRE.AM NODE ELEVATION = 89.11 FLOWLENGTH(FEET) = 120.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 24.00 I PIPEFLOW THRU SUBAREA (CFS) = 18.44 .013 NUMBER OF PIPES = 1 ')~ I 1'1 TRAVEL TIME(MIN.) = .28 TC (MIN.) = 13.03 **************************************************************************** I FLOW PROCESS FROM NODE 302.00 TO NODE 317.00 IS CODE = 10 I >>>>>MAIN-STREAM MEMORY COPIED ONTO MEMORY BANK # 3 <<<<< ~~~===:===================================================================== I *******,********************************************************************* I FLOW PROCESS FROM NODE 310.00 TO NODE 311.00 IS CODE = 21 --------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< 1= == = = =,= = = = = = = = = = == = = = = = ==== = = = = = = = = = = = = = == = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ASSUMED INITIAL SUBAREA UNIFORM I DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAl" SUBAREA FLOW-LENGTH = 245.00 I UPSTREAM ELEVATION = 98.10 DOWNSTREAM ELEVATION = 95.10 I ELEVATION DIFFERENCE = 3.00 TC = .323*[( 245.00**3)/( 3.00)]**.2 = 7.029 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 2.894 I SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8522 I SUBAREA RUNOFF (CFS) = 1.26 TOTAL AREA(ACRES) = .51 TOTAL RUNOFF (CFS) 1.26 1*************************************************************************** FLOW PROCESS FROM NODE 311.00 TO NODE 312.00 IS CODE = 9 11--------------------------------------------------------------------------- >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< It=========================================================================== UPSTREAM NODE ELEVATION = 95.10 DOWNSTREAM NODE ELEVATION = 94.30 I CHANNEL LENGTH THRU SUBAREA (FEET) = 110.00 "V" GUTTER WIDTH(FEET) = 4.00 GUTTER HIKE (FEET) I PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 PAVEMENT CROSSFALL(DECIMAL NOTATION) = .03000 MAXIMUM DEPTH(FEET) = 1.00 1 10 ~EAR RAINFALL INTENSITY (INCH/HOUR) SOIL CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT .100 1.932 .8367 eo6 I n. il I I *******~********************************************************************* TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) = AVERAGE FLOWDEPTH(FEET) = .48 FLOODWIDTH(FEET) "V" GUTTER FLOW TRAVEL TIME(MIN) 7.62 TC(MIN) SUBAREA AREA (ACRES) = .14 SUBAREA RUNOFF(CFS) = SUMMED. AREA (ACRES) = .65 TOTAL RUNOFF(CFS) = END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .49 FLOODWIDTH(FEET) 27.99 FLOW VELOCITY(FEET/SEC.) = .24 DEPTH*VELOCITY .24 27.08 14.65 .23 1.48 .12 l-~~~~-~~~~~~~-~~~~-~~~~---~~~~~~-~~-~~~~---~~~~~~-~~-~~~~_:_--~------------ >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< ~=========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 14.65 RAINFALL INTENSITY (INCH/HR) = 1.93 I TOTAL STREAM AREA(ACRES) = .65 PEAK FLOW RATE(CFS) AT CONFLUENCE = 1.48 I *******,********************************************************************* I FLOW PROCESS FROM NODE 313.00 TO NODE 314.00 IS CODE = 21 ---------------------------------------------------------------------------- I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ======:===================================================================== ASSUMED INITIAL SUBAREA UNIFORM I DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-LENGTH = 130.00 UPSTREAM ELEVATION = 99.00 DOWNSTREAM ELEVATION = 95.23 I ELEVATION DIFFERENCE = 3.77 TC = .323*[( 130.00**3)/( 3.77)]**.2 = 4.591 I COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.491 SOIL CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8585 SUBAREA RUNOFF(CFS) = .87 I TO'rAL AREA (ACRES) = . 29 TOTAL RUNOFF(CFS) .87 (.,\ 1(******1********************************************************************* I FLOW PROCESS FROM NODE 314.00 TO NODE 312.00 IS CODE = 9 tl--------------------------------------------------------------------------- >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< I==~;;;;::;=:;~:=:~:~~;;;:=:=====;;~;;======================================= DOWNSTRE.AM NODE ELEVATION = 94.30 I CHANNEL LENGTH THRU SUBAREA (FEET) = 285.00 "V" GUTTER WIDTH(FEET) = 4.00 GUTTER HIKE (FEET) = PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 I PAVEMENT CROSSFALL(DECIMAL NOTATION) = .03000 ~XIMUM DEPTH (FEET) = 1.00 I 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 1.248 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8179 I TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) AVERAGE FLOWDEPTH(FEET) = .50 FLOODWIDTH(FEET) I "V" GUTTER FLOW TRAVEL TIME (MIN) = 27.37 TC (MIN) SUBAREliAREA (ACRES) = .48 SUBAREA RUNOFF (CFS) = SUMMED AREA(ACRES) = .77 TOTAL RUNOFF (CFS) = I END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .55 FLOODWIDTH(FEET) 31.61 I FLOW VELOCITY (FEET/SEC.) = .18 DEPTH*VELOCITY .100 .17 28.89 32.37 .49 1. 36 .10 ~*************************************************************************** FLOW PROCESS FROM NODE 314.00 TO NODE 312.00 IS CODE = 1 II-:::::~~~~~~~~~-~~~~~~~~~~~-~~~~~-;~~-~~~;~~~~~~:::::--------------------- >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< 1=========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION (MIN. ) 32.37 RAINFALL INTENSITY (INCH/HR) = 1.25 I TOTAL STREAM AREA (ACRES) = . 77 PEAK FLOW RATE (CFS) AT CONFLUENCE = I I I 1. 36 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 1.48 2 1.36 Tc INTENSITY ( INCH/HOUR) 1.932 1.248 AREA (ACRE) .65 .77 (MIN. ) 14.65 32.37 ******'***************************WARNING********************************** (;,d I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THEiRCFC&WCD FORMULA OF PLATE D-l AS DEFAULT VALUE. THIS FORMULA 11 WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ! ************************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I I I I I * * PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 2.10 14.65 1.932 2 2.32 32.37 1. 248 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE ;:: 2.10 1.42 AS FOLLOWS: Tc (MIN.) = 14.65 **************************************************************************** I FLOW PROCESS FROM NODE 315.00 TO NODE 312.00 IS CODE = 8 I >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ====================================================================:=::====== 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 1.932 I SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8367 I SUBAREA AREA (ACRES) . 03 SUBAREA RUNOFF (CFS) TOTAL AREA (ACRES) = 1. 45 TOTAL RUNOFF (CFS) = TC(MIN) = 14.65 I .05 2.15 f***'************************************************************************ FLOW PROCESS FROM NODE 316.00 TO NODE 312.00 IS CODE = 8 I >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< -======,===================================================================== I 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 1.932 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8367 I SUBARE1, AREA (ACRES).- .14 SUBAREA RUNOFF (CFS) TOTAL AREA(ACRES) = 1.59 TOTAL RUNOFF (CFS) = I TC(MIN) = 14.65 .23 2.37 (}, ~*************************************************************************** 'I I FLOW PROCESS FROM NODE 312.00 TO NODE 317.00 IS CODE = 3 . . 11- - - - - -- - - - - - - - - - - - - - -"- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- I. >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< ~=========================================================================== DEPTH OF FLOW IN 9.0 INCH PIPE IS 5.4 INCHES PIPEFLOW VELOCITY(FEET/SEC.) 8.6 UPSTREAM NODE ELEVATION = 90.30 DOWNSTREAM NODE ELEVATION = 89.11 FLOWLENGTH(FEET) = 22.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) 9.00 PIPEFLOW THRU SUBAREA (CFS) = 2.37 TRAVEL TIME(MIN.) = .04 TC(MIN.) = 14.69 I I I I *******,********************************************************************* .013 NUMBER OF PIPES 1 I FLOW PROCESS FROM NODE 312.00 TO NODE 317.00 IS CODE = 11 --------------------------------------------------------------------------- >>>>>CONFLUENCE MEMORY BANK # 3 WITH THE MAIN-STREAM MEMORY<<<<< IJ=========================================================================== I I I I ** MAIN STREAM NUMBER 1 STREAM CONFLUENCE DATA ** RUNOFF Tc INTENSITY (CFS) (MIN. ) (INCH/HOUR) 2.37 14.69 1.929 * * MEMORY STREAM NUMBER 1 BANK # RUNOFF (CFS) 18.44 3 CONFLUENCE DATA ** Tc INTENSITY (MIN. ) (INCH/HOUR) 13.03 2.060 AREA (ACRE) 1. 59 AREA (ACRE) 16.20 I * ** * * *.* * * * * * * * * * ** * *** * * * * * * * * * * *WARNING** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA I WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. * * * ** *,** * *** * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * * * * * * ** I I I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: I PEAK FLOW RATE(CFS) 20.55 Tc(MIN.) = ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) (INCH/HOUR) 1 20.55 13.03 2.060 2 19.64 14.69 1. 929 13.03 (,,4 I I:.. I ' , TOTAL AREA (ACRES) ; 17.79 **************************************************************************** ,I FLOW PROCESS FROM NODE 317.00 TO NODE 321.00 IS CODE = 3 ., >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< I;=~;;;:;;;;;~~:;;:;;;~~~;;:~:;;;;;;;;;;~;~;;;:~:;;;;;;;;;;;;;;;;;;;;;;;;;=;; PIPEFLOW VELOCITY(FEET/SEC.) 7.1 I UPSTREAM NODE ELEVATION; 89.11 DOWNSTRE.I\M NODE ELEVATION; 88.76 FLOWLENGTH(FEET); 45.00 MANNING'S N; .013 I ESTIMATED PIPE DIAMETER (INCH) = 27.00 NUMBER OF PIPES 1 PIPEFLOW THRU SUBAREA (CFS) ; 20.55 I TRAVEL TIME (MIN.); .11 TC (MIN.) ; 13.14 11*************************************************************************** FLOW PROCESS FROM NODE 317.00 TO NODE 321.00 IS CODE; 1 1--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I TOTAL NUMBER OF STREAMS; 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME OF CONCENTRATION (MIN.) ; 13 . 14 RAINFALL INTENSITY (INCH/HR) ; 2.05 TO'rAL STREAM AREA(ACRES) = 17.79 I PEAK FLOW RATE (CFS) AT CONFLUENCE ; 20 . 55 11*************************************************************************** FLOW PROCESS FROM NODE 320.00 TO NODE 321.00 IS CODE; 21 11--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< I==;;;;;;~;;:;~;;:;;;::;;~::;~;:;;~;:;=;;;;;;;====;;;;;;;;;;;;;;;;;;;;;;; DEVELOPMENT IS APARTMENT I TC ; K* [ (LENGTH**3) / (ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 440.00 UPSTREAM ELEVATION; 100.00 . DOWNS.TRE.I\M ELEVATION; 96 .10 ELEVATION DIFFERENCE ; 3.90 II TC; .323*[( 440.00**3)/( 3.90)]**.2 9.477 (S I I i' I 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 2.455 SOIL CLASSIFICATION IS liB" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8462 SUBAREA RUNOFF (CFS) -- 1.12 TOTAL AREA (ACRES) = .54 TOTAL RUNOFF(CFS) 1.12 ~*************************************************************************** FLOW PROCESS FROM NODE 320.00 TO NODE 321.00 IS CODE = 1 IJ--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< =========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) = 9.48 I RAINFALL INTENSITY (INCH/HR) = 2.46 TOTAL STREAM AREA (ACRES) = .54 PEAK FLOW RATE (CFS) AT CONFLUENCE = I I I STREAM 2 ARE: 1.12 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 20.55 2 1.12 Tc INTENSITY ( INCH/HOUR) 2.051 2.455 AREA (ACRE) 17.79 .54 (MIN. ) 13 .14 9.48 1* * * ***.* * * * * * * * * * * * * * * * * * * * * * *** * *WARNING* * * ** * * * * * * * * * * * * * * * * * * * * * * * * * * ** * IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE I RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA I WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ******:******************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I ** PEAK FLOW RATE TABLE ** I STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 15.94 9.48 2.455 I 2 21. 49 13 .14 2.051 I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE (CFS) = 21.49 Tc (MIN. ) = 13 .14 TOTAL AREA (ACRES) = 18.33 I rJ; I il * * *.. * ** ** * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * FLOW PROCESS FROM NODE 321.00 TO NODE 322.00 IS CODE = 3 Ir-:::::~~~;~~-;~;~;~~~-;~~~~;~~~-;~~~-~~~~~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< It=~;;;:=~;=;~~:=;:==;~~~=;:~:=;;;;=;;==~~~;=;:~:;;========================== I PIPEFLOW VELOCITY(FEET/SEC.) 8.0 UPSTREAM NODE ELEVATION = 88.76 DOWNSTREI\M NODE ELEVATION = 88.30 I FLOWLENGTH (FEET) = 44.51 MANNING'S N = .013 ESTIMATED PIPE DIAMETER (INCH) = 27.00 NUMBER OF PIPES = 1 I PIPEFLOW THRU SUBAREA(CFS) = 21.49 TRAVEL TIME(MIN.) = .09 TC(MIN.) = 13.23 11*************************************************************************** FLOW PROCESS FROM NODE 330.00 TO NODE 331.00 IS CODE = 21 1--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< It========:;;~;~=;:;;;:~=;~;::;:=~;;~::==================================== DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 120.00 I UPSTREAM ELEVATION = 103.30 DOWNSTREI\M ELEVATION = 102.10 ELEVATION DIFFERENCE = 1.20 1 TC = . 323 * [ ( 12 0 . 00 ** 3 ) / ( 1. 20) ] ** . 2 5 . 501 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.312 I SOIL CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT SUBARE1'.. RUNOFF (CFS) .- TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = .43 .15 .8567 TOTAL RUNOFF (CFS) = .43 ~******'********************************************************************* FLOW PROCESS FROM NODE 331.00 TO NODE 332.00 IS CODE = 9 It--------------------------------------------------------------------------- >>>>>.COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< (==========================================================~~~=============~ UPSTREAM NODE ELEVATION = 102.10 DOWNSTREAM NODE ELEVATION = 100.00 I CK~EL LENGTH THRU SUBAREA(FEET) = 165.00 c;:r i::...c I I,. I I I I I "V" GUTTER WIDTH(FEET) = 4.00 GUTTER HIKE (FEET) PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 PAVEMENT CROSSFALL(DECIMAL NOTATION) = .03000 MAXIMUM DEPTH(FEET) = 1.00 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 1.835 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8346 TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) AVERAGE FLOWDEPTH(FEET) = .34 FLOODWIDTH(FEET) "V" GUTTER FLOW TRAVEL TIME(MIN) = 10.58 TC(MIN) SUBAREA .~EA(ACRES) = .33 SUBAREA RUNOFF(CFS) = SUMMED AREA (ACRES) = .48 TOTAL RUNOFF(CFS) END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .38 FLOODWIDTH(FEET) = 20.75 FLOW VELOCITY(FEET/SEC.) = .27 DEPTH*VELOCITY = .100 .26 18.03 16.08 .51 .93 .10 11*************************************************************************** FLOW PROCESS FROM NODE 331.00 TO NODE 332.00 IS CODE = 1 11--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< II=;~;~=~:;;=~;=;;;;::;=:==~============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME OF CONCENTRATION (MIN.) 16.08 RAINFALL INTENSITY (INCH/HR) = 1.83 I TOTAL STREAM AREA (ACRES) = .48 PEAK FLOW RATE (CFS) AT CONFLUENCE = .93 ~*****~********************************************************************* I-~~~~-~~~~~~~-~~~~-~~~~---~~~~~~-~~-~~~~---~~~~~~-~~-~~~~-:--~~------------ >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< It=========================================================================== ASSUMED INITIAL SUBAREA UNIFORM I DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 240.00 I UPSTREAM ELEVATION = 103.30 DOWNSTREAM ELEVATION = 100.00 ELEVATION DIFFERENCE = 3.30 . TC = . 323 * [ ( 240 . 00 * * 3) / ( 3 . 30) ] * * . 2 10 :YEAR RAINFALL INTENSITY (INCH/HOUR) = I SOIL CLASSIFICATION IS "B" 6.811 2.945 ~ I APARTMENT DEVELOPMENT 'I SUBAREA RUNOFF (CFS) -. TOTAL AREA (ACRES) = I RUNOFF COEFFICIENT = .8528 1.16 .46 TOTAL RUNOFF(CFS) = 1.16 **************************************************************************** I FLOW PROCESS FROM NODE 333.00 TO NODE 332.00 IS CODE = 1 --------_._----------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< :1 >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< ---------------------------------------------------------------------------- ----------.------------------------------------------------------------------ I I I I I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) = 6.81 RAINFALL INTENSITY (INCH/HR) = 2.94 TOTAL STREAM AREA (ACRES) = .46 PEAK FLOW RATE (CFS) AT CONFLUENCE = STREAM 2 ARE: 1.16 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 .93 2 1.16 Tc INTENSITY ( INCH/HOUR) 1.835 2.945 AREA (ACRE) .48 .46 (MIN. ) 16.08 6.81 I*********************************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ************************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO I CONFLUENCE FORMULA USED FOR 2 STREAMS. I I I I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 1. 55 6.81 2.945 2 1. 65 16.08 1. 835 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE 1. 55 .94 AS FOLLOWS: Tc(MIN.) = 6.81 ~D, It******'********************************************************************* I I, FLOW PROCESS FROM NODE 332.00 TO NODE 334.00 IS CODE = 9 . 'If--------------------------------------------------------------------------- >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< Ir=~;;;;;;:=:;~;=;~;~~;;;:=:====~~~~~~======================================= DOWNSTREAM NODE ELEVATION = 98.70 .1 CHANNEL :~ENGTH THRU SUBAREA (FEET) = 13 0 . 00 "V" GUTTER WIDTH(FEET) = 4.00 GUTTER HIKE (FEET) = PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 i :1 PAVEMENT CROSSFALL (DECIMAL NOTATION) = .03000 MA.X I MIDI DEPTH (FEET) = 1. 00 I 10 YEAR RAINFALL INTENSITY (INCH/HOUR) SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8373 I TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) AVERAGE FLOWDEPTH(FEET) = .48 FLOODWIDTH(FEET) I "V" GUTTER FLOW TRAVEL TIME (MIN) = 7.43 TC (MIN) SUBAREA _~EA(ACRES) = .14 SUBAREA RUNOFF (CFS) SUMMED AREA (ACRES) = 1.08 TOTAL RUNOFF(CFS) I END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .49 FLOODWIDTH(FEET) = 27.99 I FLOW VELOCITY(FEET/SEC.) = .29 DEPTH*VELOCITY .100 1. 962 .29 27.08 14.24 .23 1. 78 .14 11*************************************************************************** FLOW PROCESS FROM NODE 334.00 TO NODE 335.00 IS CODE = 3 I-:::::~~~;~~-;~;~;~~~-;~~~~;~~~-;~;~-~~~~~~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< It=========================================================================== DEPTH OF FLOW IN 9.0 INCH PIPE IS 6.4 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) 5.3 UPSTREAM NODE ELEVATION = 94.26 DOWNSTRE.AM NODE ELEVATION = 91.75 I FLOWLENGTH (FEET) = 135.00 MANNING'S N .013 ESTIMATED PIPE DIAMETER (INCH) = 9.00 NUMBER OF PIPES 1 PIPEFLOW THRU SUBAREA (CFS) 1.78 I TRAVEL TIME(MIN.) = .43 TC(MIN.) 14.66 ~*****.********************************************************************* FLOW PROCESS FROM NODE 340.00 TO NODE 341.00 IS CODE = 21 11--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ,6 It=========================================================================== , I I'l ,I I I I I ASSUMED INITIAL SUBAREA UNIFORM !DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 85.00 UPSTREAM ELEVATION = 102.00 DOWNSTRE.I<M ELEVATION = 101.10 ELEVATION DIFFERENCE = .90 TC = .323*[( 85.00**3)/( .90)]**.2 = 4.738 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.491 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT SUBAREA RUNOFF (CFS) .. TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = .8585 .48 .16 TOTAL RUNOFF (CFS) = .48 1******1********************************************************************* FLOW PROCESS FROM NODE 341.00 TO NODE 351.00 IS CODE = 3 -------.--------------------------------------------------------------------- I >>>>>C<DMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< Ir=~::;:=~;=;~~:=;:===:~~=;:~:=:;:;=;;===;~:=;:~:;;========================== PIPEFLOW VELOCITY(FEET/SEC.) = 3.8 I UPSTREAM NODE ELEVATION = 99.11 DOWNSTREAM NODE ELEVATION 96.75 I FLOWLENGTH(FEET) = 130.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER(INCH) = 6.00 NUMBER OF PIPES 1 PIPEFLOW THRU SUBAREA (CFS) = .48 I TRAVEL TIME (MIN.) = .56 TC (MIN.) 5.56 ~*************************************************************************** FLOW PROCESS FROM NODE 341.00 TO NODE 351.00 IS CODE = 1 ~--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< Ir=;~;:~=~;:;=~;=;;;;:;;=:==~============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME .OF CONCENTRATION (MIN. ) 5.56 RAINFALL INTENSITY (INCH/HR) = 3.29 TOTAL STREAM AREA(ACRES) = .16 I PEAK :FLOW RATE (CFS) AT CONFLUENCE = I .48 II , I **************************************************************************** ,( FLOW PROCESS FROM NODE 350.00 TO NODE 351.00 IS CODE = 21 ----~----------------------------------------------------------------------- I I I I I I **************************************************************************** >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ~=========================================================================== ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 290.00 UPSTREAM ELEVATION = 103.40 DOWNSTREAM ELEVATION = 100.10 ELEVATION DIFFERENCE = 3.30 TC = .323*[( 290.00**3)/( 3.30)]**.2 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8506 SUBAREA RUNOFF(CFS) = 1.20 TOTAL AREA (ACRES) = .51 = 7.630 2.766 TOTAL RUNOFF(CFS) 1. 20 I FLOW PROCESS FROM NODE 350.00 TO NODE 351.00 IS CODE = 1 ----------------------.----------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< I ----------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) = 7.63 RAINFALL INTENSITY (INCH/HR) = 2.77 TOTAL STREAM AREA(ACRES) = .51 PEAK FLOW RATE (CFS) AT CONFLUENCE = STREAM 2 ARE: 1. 20 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 .48 2 1.20 Tc INTENSITY ( INCH/HOUR) 3.292 2.766 AREA (ACRE) .16 .51 (MIN. ) 5.56 7.63 I * * * * * *:* * * * * * * * * * * * * * * * * * * * * * * * * * *WARNING* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ******,******************************************************************** I Id, I '. I I I COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) I TOTAL AREA (ACRES) ; RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUl1BER (CFS) (MIN. ) ( INCH/HOUR) 1 1. 35 5.56 3.292 2 1. 60 7.63 2.766 ESTIMATES ARE 1. 60 .67 AS FOLLOWS: Tc(MIN.) ; 7.63 11*************************************************************************** FLOW PROCESS FROM NODE 351.00 TO NODE 352.00 IS CODE; 3 1--------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< IJ;;;=;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; DEPTH OF FLOW IN 9.0 INCH PIPE IS 5.7 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) 5.4 UPSTREAM NODE ELEVATION; 96.75 DOWNSTREAM NODE ELEVATION; 94.60 I FLOWLENGTH (FEET); 103.00 MANNING'S N .013 ESTIMATED PIPE DIAMETER (INCH) ; 9.00 NUMBER OF PIPES; 1 I PI PEFLOW THRU SUBAREA (CFS) ; 1. 60 TRAVEL TIME(MIN.); .32 TC(MIN.); 7.95 Il*************************************************************************** II-~~~~-~~~~~~~-~~~~-~~~~---~~~~~~-~~-~~~~---~~~~~~-~~-~~~~-:--~~------------ >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< 1;;;=;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT I TC ;K* [ (LENGTH**3) / (ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH; 90.00 I UPSTREAM ELEVATION ; 106.00 DOWNSTREAM ELEVATION; 104.80 ELEVATION DIFFERENCE; 1.20 I TC; . 323 * [ ( 90 . 00 ** 3) / ( 1. 20) ] * * . 2; 4 . 629 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. I 10 ,YEAR RAINFALL INTENSITY (INCH/HOUR) ; 3.491 J) ,c.:.:,c::",=..._..-...c-"_~-_c,,-,:,.__'~...~~- I I~'I I SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT SUBAREA RUNOFF (CFS) - TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = .8585 .42 .14 TOTAL RUNOFF(CFS) .42 1*************************************************************************** FLOW PROCESS FROM NODE 361.00 TO NODE 371.00 IS CODE = 3 I >>>>>CGMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< I 1=========================================================================== I DEPTH OF FLOW IN 6.0 INCH PIPE IS 3.3 INCHES PIPEFLGW VELOCITY(FEET/SEC.) = 3.8 I UPSTREAM NODE ELEVATION = 103.10 DOWNSTREAM NODE ELEVATION = 101.30 I I FLOWLENGTH (FEET) = 90.00 MANNING'S N .013 i ESTIMATED PIPE DIAMETER(INCH) = 6.00 NUMBER OF PIPES = PIPEFLOW THRU SUBAREA(CFS) = .42 I TRAVEL TIME (MIN.) = .39 TC (MIN.) = 1 5.39 11*************************************************************************** FLOW PROCESS FROM NODE 361.00 TO NODE 371.00 IS CODE = 1 11--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< Ir=;~;~=~;:;=~;=;;;:;;;=:==~============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME OF CONCENTRATION (MIN.) = 5.39 RAINFALL INTENSITY (INCH/HR) = 3.35 II TOTAL STREAM AREA(ACRES) = .14 PEAK FLOW RATE (CFS) ].T CONFLUENCE = .42 1*************************************************************************** FLOW PROCESS FROM NODE 370.00 TO NODE 371.00 IS CODE = 21 11--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< It========~;;~;;=;:;;;~=;~;:;;~=;:;;~;:==================================== DEVELOPMENT IS APARTMENT I TC = K* [ (LENGTH**3) / (ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 30.00 I UPSTREAM ELEVATION = 106.00 1'1 I DOWNSTREAM ELEVATION = 104.60 'I ELEVATION DIFFERENCE = 1.40 TC = .323*[( 30.00**3)/( 1.40)]**.2 2.322 . COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 10 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.491 SOIL CLASSIFICATION IS "B" '. APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8585 SUBARE1, RUNOFF (CFS) .15 I TOTAL AREA(ACRES) = .05 TOTAL RUNOFF(CFS) = .15 1******:********************************************************************* FLOW PROCESS FROM NODE 370.00 TO NODE 371.00 IS CODE = 1 ---------------------------------------------------------------------------- I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< It=;~;~~=~:;;;=;;=;;;;~;=:==;============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: I TIME OF CONCENTRATION (MIN.) = 5.00 RAINFALL INTENSITY (INCH/HR) = 3.49 I TOTAL STREAM AREA(ACRES) = .05 PEAK ,FLOW RATE (CFS) AT CONFLUENCE = I I .15 ** CONFLUENCE DATA ** STREAM RUNOFF Tc INTENSITY AREA NUMBER (CFS) (MIN.) (INCH/HOUR) (ACRE) 1 .42 5.39 3.349 .14 2 .15 5.00 3.491 .05 I*********************************WARNING********************************** I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. 1************************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY . NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 .54 5.00 3.491 2 .56 5.39 3.349 I 15 - -- ._-~ . -~--- ..-.-:---..-- _.~. I 1'1 I COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE ;::: .56 .19 AS FOLLOWS: Tc (MIN.) = 5.39 **************************************************************************** I FLOW PROCESS FROM NODE 371.00 TO NODE 381.00 IS CODE = 3 ------.--------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I DEPTH OF FLOW IN 6.0 INCH PIPE IS PIPEFL0W VELOCITY(FEET/SEC.) = 4.2 UPSTREAM NODE ELEVATION = 101.30 I DOWNSTREAM NODE ELEVATION = 99.90 FLOWLENGTH(FEET) = 65.00 MANNING'S N I ESTIMATED PIPE DIAMETER (INCH) 6.00 PIPEFLOW THRU SUBAREA (CFS) = .56 TRAVEL TIME(MIN.) = .26 TC(MIN.) = I 3.8 INCHES ;::: .013 NUMBER OF PIPES 1 5.65 1*************************************************************************** FLOW PROCESS FROM NODE 371.00 TO NODE 381.00 IS CODE = 1 ---------------------------------------------------------------------------- I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) = 5.65 I RAINFALL INTENSITY (INCH/HR) = 3.26 TOTAL STREAM AREA (ACRES) = .19 I PEAK FLOW RATE (CFS) AT CONFLUENCE = STREAM 1 ARE: .56 It*************************************************************************** FLOW PROCESS FROM NODE 380.00 TO NODE 381.00 IS CODE = 21 .--------------------------------------------------------------------------- >>>>>RA'I'IONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ---------------------------------------------------------------------------- ----------.------------------------------------------------------------------ I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT I TC = :K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 255.00 UPSTREAM ELEVATION = 104.20 I DOWNSTREAM ELEVATION = 103.80 16 I I". I I ELEVATION DIFFERENCE = .40 TC = .323*[( 255.00**3)/( .40)]**.2 10 ~EAR RAINFALL INTENSITY (INCH/HOUR) = SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = SUBAREA RUNOFF (CFS) = 1.10 TOTAL AREA(ACRES) = .57 10.772 2.288 .8435 TOTAL RUNOFF(CFS) 1.10 1* ** * * *;* * * * * * * * * * * ** * * * * ** ** * * * * * ** * * * * * * ** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * FLOW PROCESS FROM NODE 380.00 TO NODE 381.00 IS CODE = 1 II-:::::~~~~~~~~~-~~~~;~~~~~~-~~~~~-;~~-~~~;~~~~~~:::::--------------------- >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< ~=========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION (MIN. ) 10.77 RAINFALL INTENSITY (INCH/HR) = 2.29 I TOTAL STREAM AREA (ACRES) = . 57 PEAK FLOW RATE (CFS) AT CONFLUENCE = I I I 1.10 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 .56 2 1. 10 Tc INTENSITY ( INCH/HOUR) 3.265 2.288 AREA (ACRE) .19 .57 (MIN. ) 5.65 10.77 *********************************WARNING********************************** I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-l AS DEFAULT VALUE. THIS FORMULA I WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ******,******************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY I NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 1.14 5.65 3.265 I 2 1.49 10.77 2.288 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: I PEAK FLOW RATE (CFS) = 1.49 Tc (MIN. ) = 10.77 f7 I 'I TOTAL AREA (ACRES) ~ .76 *******1********************************************************************* I FLOW PROCESS FROM NODE 381.00 TO NODE 382.00 IS CODE ~ 3 I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< I~~~;:;:~~;~;~~:~;:~~~;~~~;:~:~:;:;~;:~~~;~~~;:~:;:~~~~~~~~~~~~~~~~~~~~~~~~~~ PIPEFLOW VELOCITY(FEET/SEC.) 6.0 I UPSTREAM NODE ELEVATION ~ 99.90 DOWNSTREAM NODE ELEVATION ~ 98.78 FLOWLENGTH(FEET) ~ 40.00 MANNING'S N ~ .013 I ESTIMATED PIPE DIAMETER (INCH) ~ 9.00 NUMBER OF PIPES ~ PIPEFLOW THRU SUBAREA (CFS) 1.49 I TIV\.VEL TIME (MIN.) ~ .11 TC (MIN. ) 1 10.88 1******'********************************************************************* FLOW PROCESS FROM NODE 390.00 TO NODE 391.00 IS CODE ~ 21 1--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ----.------------------------------------------------------------------------ ---------------------------------------------------------------------------- I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT I TC ~ K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH ~ 500.00 UPSTREAM ELEVATION ~ 104.10 I DOWNSTRE.AM ELEVATION ~ 99.20 ELEVATION DIFFERENCE ~ 4.90 I TC ~ .323*[( 500.00**3)/( 4.90)1**.2 10 YEAR RAINFALL INTENSITY (INCH/HOUR) ~ SOIL CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT ~ SUBAREA RUNOFF(CFS) ~ 1.63 I TOTAL AREA (ACRES) ~ .80 9.776 2.414 .8455 TOTAL RUNOFF(CFS) ~ 1. 63 1* * * * * *:* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *** * * * * * * * * * * * * * * * * * * * * * *** **** FLOW PROCESS FROM NODE 391.00 TO NODE 392.00 IS CODE ~ 3 Ir-:::::~~~~~;~-;~~~;~~~-;~~~~;~~~-;~~~-~~~~~~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< I~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ . l~ ,I 'I I I I DEPTH OF FLOW IN 12.0 INCH PIPE IS PIPEFL0W VELOCITY(FEET/SEC.) 4.1 UPSTREAM NODE ELEVATION = 94.72 DOWNSTREAM NODE ELEVATION = 94.24 FLOWLENGTH(FEET) = 50.00 MANNING'S N ESTIMATED PIPE DIAMETER(INCH) = 12.00 PIPEFLOW THRU SUBAREA (CFS) = 1.63 TRAVEL TIME(MIN.) = .20 TC(MIN.) 6.0 INCHES == .013 NUMBER OF PIPES = 1 9.98 **************************************************************************** I FLOW PROCESS FROM NODE 292.00 TO NODE 293.00 IS CODE = 3 ----------------------.----------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I TRAVEL TIME(MIN.) = .07 TC(MIN.) 10.05 11=========================================================================== END OF STUDY SUMMARY: I PEAK FLOW RATE (CFS) = TOTAL AREA (ACRES) = DEPTH OF FLOW IN 9.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) = 9.6 UPSTREAM NODE ELEVATION = 94.72 DOWNSTREAM NODE ELEVATION 91.00 FLOWLENGTH(FEET) = 40.00 MANNING'S N ESTIMATED PIPE DIAMETER(INCH) = 9.00 PIPEFLOW THRU SUBAREA (CFS) = 1.63 3.7 INCHES = .013 NUMBER OF PIPES = 1 1. 63 .80 Tc (MIN.) = 10.05 ---------------------------------------------------------------------------- ----------'------------------------------------------------------------------ I END OF RATIONAL METHOD ANALYSIS I I I I I I -A , I 'I I I I I I I I I I I I I I I I I I APPENDIX B HYDROLOGY STUDY (tOO-YEAR STORM EVENT) I 'Cfl * * * * * *i* * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM BASED ON I I I I I ************************** DESCRIPTION OF STUDY ************************** I IN 13122 - TRACT NO. 23304 * DEVELOPED CONDITION 100-YR, 1-HR STORM EVENT FOR TRIBUTARY AREAS NORTH * * OF LONG CANYON WASH --- MODELED BY S.M.L. ON AUGUST 26, 1998 * 1************************************************************************** RIVERSIDE COUNTY FLOOD CONTROL & WATER CONSERVATION DISTRICT (RCFC&WCD) 1978 HYDROLOGY MANUAL (c) Copyright 1982-96 Advanced Engineering Software (aes) Ver. 1.5A Release Date: 01/01/96 License ID 1261 Analysis prepared by: 5620 RICK ENGINEERING COMPANY WATER RESOURCES DIVISION FRIARS ROAD, SAN DIEGO, CA (619) 291-0707 92110 I FILE NAME: 13122A.DAT TIME/DATE OF STUDY: 15: 1 8/26/1998 1 USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: -----------------------.----------------------------------------------------- 1 I I I I I I *******:********************************************************************* USER SPECIFIED STORM EVENT(YEAR) = 100.00 SPECIFIED MINIMUM PIPE SIZE (INCH) = 4.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE 10-YEAR STORM 10-MINUTE INTENSITY (INCH/HOUR) = 10-YEAR STORM 60-MINUTE INTENSITY (INCH/HOUR) = 100-YEAR STORM H)-MINUTE INTENSITY (INCH/HOUR) = 100-YEAR STORM 60-MINUTE INTENSITY (INCH/HOUR) SLOPE OF 10-YEAR INTENSITY-DURATION CURVE = SLOPE OF 100-YEAR INTENSITY-DURATION CURVE = COMPUTED RAINFALL INTENSITY DATA: STORM EVENT = 100.00 I-HOUR INTENSITY (INCH/HOUR) = 1.3000 SLOPE OF INTENSITY DURATION CURVE = .5496 RCFC&WCD HYDROLOGY MANUAL "C"-VALUES USED NOTE: COMPUTE CONFLUENCE VALUES ACCORDING TO RCFC&WCD HYDROLOGY MANUAL AND IGNORE OTHER CONFLUENCE COMBINATIONS FOR DOWNSTREAM ANALYSES FOR FRICTION 2.360 .880 3.480 1. 300 .5505732 .5495536 SLOPE = .85 I FLOW PROCESS FROM NODE 10.00 TO NODE 11.00 IS CODE = 21 B:> I '( >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< . =========================================================================== ASSUMED INITIAL SUBAREA UNIFORM I DEVELOPMENT IS APARTMENT TC = K"[(LENGTH**3)/(ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-LENGTH = 140.00 UPSTREAM ELEVATION = 103.60 DOWNSTRE.~ ELEVATION = 99.50 I ELEVATION DIFFERENCE = 4.10 TC = .323*[( 140.00**3)/( 4.10)]**.2 = 4.720 I COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 SOIL CLASSIFICATION IS "B" I I APARTMENT DEVELOPMENT SUBAREA RUNOFF (CFS) = TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = 1. 24 .28 .8693 TOTAL RUNOFF(CFS) = 1. 24 11*************************************************************************** FLOW PROCESS FROM NODE 11.00 TO NODE 12.00 IS CODE = 9 1--------------------------------------------------------------------------- >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< ---------------------------------------------------------------------------- ----------------------------------------------------------------------------- I UPSTREAM NODE ELEVATION = 99.50 DOWNSTREAM NODE ELEVATION = 97.90 I CHANNEL LENGTH THRU SUBAREA(FEET) = 215.00 "V" GUTTER WIDTH(FEET) = 4.00 GUTTER HIKE (FEET) = PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 I PAVEMENT CROSSFALL(DECIMAL NOTATION) = .02000 MAXIMUN DEPTH (FEET) = 1. 00 I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 2.330 SOIL CLASSIFICATION IS "B" I I I I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8442 Tm\VELTIME THRU SUBAREA BASED ON VELOCITY (FEET/SEC) = AVERAGE FLOWDEPTH(FEET) = .48 FLOODWIDTH(FEET) = "V" GUTTER FLOW TRAVEL TIME(MIN) = 15.75 TC(MIN) = SUBAREA AREA (ACRES) = .50 SUBAREA RUNOFF(CFS) SUMMED AREA (ACRES) = .78 TOTAL RUNOFF(CFS) = END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .50 FLOODWIDTH(FEET) = 41.34 FLOW VELOCITY(FEET/SEC.) = .25 DEPTH*VELOCITY .100 .23 38.62 20.75 .98 2.22 .13 It*********'k***************************************************************** el I FLOW PROCESS FROM NODE 12.00 TO NODE 13.00 IS CODE; 9 .It-:::::~~~~~~~-~~~-;~~~~;-;~~~-~~~~~~~~~-~~;~-~~~~~~:::::----------------- ============================================================================ I UPSTREAM NODE ELEVATION; 97.90 DOWNSTREIIM NODE ELEVATION; 93.80 I CK~L LENGTH THRU SUBAREA (FEET) ; 370.00 "V" GUTTER WIDTH(FEET); 4.00 GUTTER HIKE (FEET) PAVEMENT LIP (FEET) ; .031 MANNING'S N ; .2000 I PAVEMENT CROSSFALL(DECIMAL NOTATION); .03000 MAXIMUM DEPTH (FEET) ; 1.00 I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) ; 1.636 SOIL .CLASSIFICATION IS "B" I I I I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT; .8297 TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) ; AVERAGE FLOWDEPTH(FEET); .56 FLOODWIDTH(FEET); "V" GUTTER FLOW TRAVEL TIME (MIN) 18.72 TC(MIN); SUBARE1. AREA (ACRES) ~~ . 66 SUBAREA RUNOFF (CFS) SUMMED AREA (ACRES) ; 1.44 TOTAL RUNOFF(CFS) END OF. SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) ; .59 FLOODWIDTH(FEET); 34.32 FLOW VELOCITY(FEET/SEC.); .35 DEPTH*VELOCITY; .100 .33 32.51 39.47 .90 3.12 .20 ~******:********************************************************************* FLOW PROCESS FROM NODE 14.00 TO NODE 13.00 IS CODE; 8 .--------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ----.------------------------------------------------------------------------ ---------------------------------------------------------------------------- I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) ; 1.636 SOIL CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT; .8297 SUBAREA AREA (ACRES) .40 SUBAREA RUNOFF(CFS) TOTAL AREA(ACRESi 1.84 TOTAL RUNOFF(CFS) ; I TC(MIN) ; 39.47 .54 3.66 11******:********************************************************************* FLOW PROCESS FROM NODE 14.00 TO NODE 13.00 IS CODE; 1 1_-------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< I;;;~;:~;~:;;;;~;;;;;;::;;:;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME OF CONCENTRATION (MIN.) ; 39.47 62 I I I **************************************************************************** RAINFALL INTENSITY (INCH/HR) = 1.64 TOTAL STREAM AREA(ACRES) = 1.84 PEAK FLOW RATE(CFS) AT CONFLUENCE = 3.66 Il-~~~~-~~~~~~~-~~~~-~~~~----~~~~~-~~-~~~~----~~~~~-~~-~~~~_:_--~------------ >>>>>USER SPECIFIED HYDROLOGY INFORMATION AT NODE<<<<< ~=========================================================================== USER-SPECIFIED VALUES ARE AS FOLLOWS: I TC(MIN) = 9.67 RAIN INTENSITY (INCH/HOUR) = 3.54 TOTAL AREA(ACRES) = 1.12 TOTAL RUNOFF(CFS) = 2.90 ~******.******************************************************************** II-~~~~-~~~~~~~-~~~~-~~~~----~~~~~-~~-~~~~----~~~~~-~~-~~~~_:_--~------------ >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< II ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I DEPTH OF FLOW IN 12.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) 7.2 UPSTREAM NODE ELEVATION = 91.13 DOWNSTREI\M NODE ELEVATION 88.80 FLOWLENGTH(FEET) = 80.00 MANNING'S N ESTIMATED PIPE DIAMETER(INCH) 12.00 PIPEFLOW THRU SUBAREA(CFS) 2.90 TRAVEL TIME(MIN.) = .19 TC(MIN.) 6.1 INCHES = .013 NUMBER OF PIPES = 1 9.86 *******.********************************************************************* II FLOW PROCESS FROM NODE 15.00 TO NODE 13.00 IS CODE = 1 I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< -=========================================================================== TOTAL NUMBER OF STREAMS = 3 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) 9.86 I RAINFALL INTENSITY (INCH/HR) = 3.51 TOTAL STREAM AREA(ACRES) = 1.12 PEAK FLOW RATE (CFS) AT CONFLUENCE = 2.90 I 1** *'k * *,* * * * * * * * * * * * * * * * * * * * * * * **** * * * * * * * * ** * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * *~ I I FLOW PROCESS FROM NODE 16.50 TO NODE 16.00 IS CODE = 7 I .1- - - - - - - - - - - - - - - - - - - - -.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- >>>>>USER SPECIFIED HYDROLOGY INFORMATION AT NODE<<<<< ----------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I USER-SPECIFIED VALUES ARE AS FOLLOWS: TC(MIN) = 5.23 RAIN INTENSITY (INCH/HOUR) = 4.97 TOTAL AREA (ACRES) = .25 TOTAL RUNOFF(CFS) = 1. 00 1* * ** * *.* * * * * * * * * * * * * * * * * * * * ** * * * * * *** * * * * * * * * * * * * * * * * * ****** * * * * * * * * * * * * * * * * FLOW PROCESS FROM NODE 16.00 TO NODE 13.00 IS CODE = 3 II-:::::~~~~~;~-~~~~;~~~-;~~~~;~~~-;~;~-~~~~~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< It=========================================================================== DEPTH OF FLOW IN 9.0 INCH PIPE IS 4.5 INCHES I PIPEFLOW VELOCITY (FEET/SEC. ) 4.5 UPSTREAM NODE ELEVATION = 92.00 DOWNSTREI'IM NODE ELEVATION = 88.80 I FLOWLENGTH (FEET) = 190.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER (INCH) = 9.00 NUMBER OF PIPES = 1 I PIPEFLOW THRU SUBAREA (CFS) 1. 00 TRAVEL TIME(MIN.) = .70 TC(MIN.) 5.93 ~*************************************************************************** FLOW PROCESS FROM NODE 16.00 TO NODE 13.00 IS CODE = 1 11--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< -;;;;;;,===================================================================== TOTAL NUMBER OF STREAMS = 3 II CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) = 5.93 I RAINFALL INTENSITY (INCH/HR) = 4.64 TOTAL STREAM AREA (ACRES) = .25 I PEAK 'FLOW RATE (CFS) AT CONFLUENCE = II II I STREAM 3 ARE: 1. 00 ** CONFLUENCE DATA *,. STREAM RUNOFF NUMBER (CFS) 1 3.66 2 2.90 3 1. 00 Tc INTENSITY ( INCH/HOUR) 1. 636 3.508 4.636 AREA (ACRE) 1. 84 1.12 .25 (MIN. ) 39.47 9.86 5.93 e4- I I *********************************WARNING********************************** :1 IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED . ON THEiRCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. 1************************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 3 STREAMS. I * * PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY I NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 3.30 5.93 4.636 2 4.57 9.86 3.508 I 3 5.37 39.47 1.636 I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE (CFS) = 5.37 Tc (MIN. ) = 39.47 TOTAL AREA (ACRES) = 3.21 I 1*************************************************************************** FLOW PROCESS FROM NODE 13.00 TO NODE 17.00 IS CODE = 3 I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< Ir=~;;;:=;;=;~;:=;:==~;~~=;:~:=;;;;=;~==~~~~=;:~:;~========================== PIPEFLOW VELOCITY(FEET/SEC.) 6.1 I UPSTREAM NODE ELEVATION = 88.80 DOWNSTREAM NODE ELEVATION = 88.03 I FLOWLENGTH(FEET) = 60.00 MANNING'S N .013 ESTIMATED PIPE DIAMETER(INCH) 15.00 NUMBER OF PIPES 1 PI PEFLOW THRU SUBAREA (CFS) 5.37 I TRAVEL TIME (MIN.) = .16 TC (MIN.) = 39.64 11******;********************************************************************* FLOW PROCESS FROM NODE 20.00 TO NODE 21.00 IS CODE = 21 1--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< 1_=========================================================================== ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT I TC = K,q (LENGTH**3) / (ELEVATION CHANGE)] **.2 as I II I I I INITIAl, SUBAREA FLOW-LENGTH = UPSTREAM ELEVATION = 99.90 DOWNSTRE.~ ELEVATION = 97.60 ELEVATION DIFFERENCE = 2.30 TC = .323*[( 140.00**3)/( 2.30)]**.2 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = SOIL ClASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = SUBARE1\. RUNOFF (CFS) .. 1. 20 TOTAL AREA (ACRES) = . 28 140.00 = 5.298 4.934 .8685 TOTAL RUNOFF(CFS) 1. 20 11*************************************************************************** FLOW PROCESS FROM NODE 21.00 TO NODE 31.00 IS CODE = 3 11-----------------.---------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< II >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< =========================================================================== DEPTH 8F FLOW IN 9.0 INCH PIPE IS 6.0 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) 3.9 UPSTREAM NODE ELEVATION = 94.60 I DOWNSTRE~ NODE ELEVATION = 94.07 FLOWLENGTH(FEET) = 52.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER(INCH) = 9.00 NUMBER OF PIPES = 1 I PIPEFLOW THRU SUBAREA (CFS) = 1. 20 TRAVEL TIME(MIN.) = .22 TC(MIN.) 5.52 I *******:********************************************************************* I_~~~~_~~~~~~~-~~~~-~~~~----~~~~~-~~-~~~~----~~~~~-~~-~~~~_:___~____________ >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< 1=========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 5.52 I RAINFALL INTENSITY (INCH/HR) = 4.82 TOTAL STREAM AREA(ACRES) = .28 PEAK FLOW RATE(CFS) AT CONFLUENCE = 1.20 I *******i********************************************************************* II FLOW PROCESS FROM NODE 30.00 TO NODE 31.00 IS CODE = 21 I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< eG l:i........~:~~~:~::;:~:~~.:::;;;;~;:...._--------_...................... TC = K" [ (LENGTH**3) / (ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-LENGTH = 50.00 UPSTREAM ELEVATION = 98.40 I DOWNSTRE.I\M ELEVATION = 97.10 ELEVATION DIFFERENCE = 1.30 TC = .323*[( 50.00**3)/( 1.30)]**.2 = 3.202 I COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 II SOIL ClASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8693 SUBAREA RUNOFF(CFS) = .62 I TOTAL AREA (ACRES:> = . 14 TOTAL RUNOFF (CFS) . 62 11*************************************************************************** FLOW PROCESS FROM NODE 30.00 TO NODE 31.00 IS CODE = 1 11--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< II >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< =========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) 5.00 I RAINFALL INTENSITY (INCH/HR) = 5.09 TOTAL STREAM AREA(ACRES) = .14 PEAK FLOW RATE (CFS) AT CONFLUENCE = I I I .62 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 1. 20 2 .62 Tc INTENSITY (INCH/HOUR) 4.823 5.093 AREA (ACRE) .28 .14 (MIN. ) 5.52 5.00 ** * * * *,* * * * * * * * * * * * * * * * ** * * * * * * * * *WARNING* * * * * ** * * * * * * * * * * * * * * * * * * * * * * * * * * * I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA I WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ******,******************************************************************** II RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I e6 I I, I I 'I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 1. 71 5.00 5.093 2 1. 79 5.52 4.823 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE -. 1. 79 .42 AS FOLLOWS: Tc (MIN.) = 5.52 1******,********************************************************************* FLOW PROCESS FROM NODE 31.00 TO NODE 41.00 IS CODE = 3 ---------------------------------------------------------------------------- II >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< Ir=~;:;:=;;=;~~:=;:===;~~=;:~:=:;:;=;:===:~~=;:~:;:========================== PIPEFLOW VELOCITY(FEET/SEC.) = 8.9 I UPSTREAM NODE ELEVATION = 94.07 DOWNSTRE.AM NODE ELEVATION = 91.68 I FLOWLENGTH (FEET) = 34.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER(INCH) = 9.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA (CFS) 1.79 II TRAVEL TIME (MIN.) = .06 TC (MIN.) 5.59 ~******:********************************************************************* FLOW PROCESS FROM NODE 31. 00 TO NODE 41. 00 IS CODE = 1 11--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< Ir=;~;:~=~:;;=~;=;;;;::;=:==;============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME OF CONCENTRATION(MIN.) 5.59 RAINFALL INTENSITY (INCH/HR) = 4.79 TOTAL STREAM AREA (ACRES) = .42 I PEAK FLOW RATE (CFS) AT CONFLUENCE = 1.79 11*************************************************************************** FLOW PROCESS FROM NODE 40.50 TO NODE 40.00 IS CODE = 7 11---------------------------------------------------------------------------- >>>>>USER SPECIFIED HYDROLOGY INFORMATION AT NODE<<<<< 11=========================================================================== eG I I. I I **************************************************************************** USER-SPECIFIED VALUES ARE AS FOLLOWS: TC(MIN)= 18.92 RAIN INTENSITY(INCH/HOUR) 2.45 TOTAL AREA (ACRES) = 9.78 TOTAL RUNOFF(CFS) = 15.30 Il-~~~~-~~~~~~~-~~~~-~~~~----~~~~~-~~-~~~~----~~~~~-~~-~~~~_:_--~------------ >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< I ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I DEPTH OF FLOW IN 15.0 INCH PIPE IS 10.5 INCHES PIPEFLOW VELOCITY(FEET/SEC.) 16.6 UPSTREAM NODE ELEVATION = 99.41 DOWNSTREI'IM NODE ELEVATION 91. 68 FLOWLENGTH(FEET) = 83.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 15.00 PIPEFLOW THRU SUBAREA(CFS) 15.30 TRAVEL TIME(MIN.) = .08 TC(MIN.) = 19.00 = .013 NUMBER OF PIPES = 1 ~******:********************************************************************* . FLOW PROCESS FR01~ NODE 40.00 TO NODE 41.00 IS CODE = 1 ---------------------------------------------------------------------------- I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< I=;~;:=::;:;=~;=;;;::;=:==~============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: I TIME OF CONCENTRATION (MIN. ) 19.00 RAINF~LL INTENSITY (INCH/HR) = 2.45 TOTAL STREAM AREA(ACRES) = 9.78 I PEAK FLOW RATE (CFS) AT CONFLUENCE = I I 15.30 ** CONFLUENCE DATA H STREAM RUNOFF NUMBER (CFSI 1 1.79 2 15.30 Tc (MIN. ) 5.59 19.00 INTENSITY ( INCH/HOUR) 4.792 2.445 AREA (ACRE) .42 9.78 I*********************************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. 1************************************************************************** 67 I I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I ** PEAK I I I I **********'k***************************************************************** STREAM NUl'1BER 1 2 FLOW RATE RUNOFF (CFS) 6.28 16.21 TABLE ** Tc (MIN. ) 5.59 19.00 INTENSITY ( INCH/HOUR) 4.792 2.445 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE 16.21 10.20 AS FOLLOWS: Tc (MIN.) = 19.00 II-~~~~-~~~~~::_~~~~-~~~~----~~~~~-~~-~~~~----~=~~~-~:-~~~~_:_--~------------ >>>>>CGMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< I ----.------------------------------------------------------------------------ ----------.------------------------------------------------------------------ I I I I DEPTH OF FLOW IN 21.0 INCH PIPE IS 14.0 INCHES PIPEFLGW VELOCITY(FEET/SEC.) = 9.5 UPSTREAM NODE ELEVATION = 91.68 DOI~STREAM NODE ELEVATION = 88.93 FLOWLENGTH (FEET) = 138.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 21. 00 PIPEFLOW THRU SUBAREA (CFS) = 16.21 TRAVEL TIME(MIN.) = .24 TC(MIN.) = 19.25 .013 NUMBER OF PIPES = 1 i*************************************************************************** FLOW PROCESS FROM NODE 50.00 TO NODE 51.00 IS CODE = 21 I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< -=========================================================================== I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 I INITIAl" SUBAREA FLOW-LENGTH = 100.00 UPSTREAM ELEVATION = 100.00 DOWNSTREAM ELEVATION = 99.20 I ELEVATION DIFFERENCE = .80 TC = .323*[( 100.00**3)/( .80)]**.2 I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.348 4.909 ea __n'_.. _n___..__ _.~_.-._-_..~- I !il I SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8683 SUBAREA RUNOFF(CFS) .90 TOTAL AREA (ACRES) = .21 TOTAL RUNOFF(CFS) = .90 It*************************************************************************** FLOW PROCESS FROM NODE 51. 00 TO NODE 73.00 IS CODE = 3 I--:::::~~~;~~~-;~;~;~~~-~~~~~~~~~-~~~~-~~~~~~~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< It=~;:;:=~;=;~~:=;:===;~~=;:~:=:;:;=;;===:~~=;:~:;;========================== I PIPEFLOW VELOCITY(FEET/SEC.) = 4.7 UPSTREAM NODE ELEVATION = 96.61 DOWNSTREAM NODE ELEVATION = 93.82 I FLOWLENGTH (FEET) = 135.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER(INCH) 9.00 NUMBER OF PIPES 1 I PIPEFLOW THRU SUBAREA (CFS) = .90 TRAVEL TIME(MIN.) = .48 TC(MIN.) 5.82 11*************************************************************************** ! II-~~~~-~~~~~~~-~~~~-~~~~----~~~~~-~~-~~~~----~~~~~-~~-~~~~-:---~------------ >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< It=;~;:~=~;;;=~;=;;:;::;=:==;============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME OF CONCENTRATION (MIN. ) 5.82 RAINFALL INTENSITY (INCH/HR) = 4.68 I TOTAL STREAM AREA(ACRES) = .21 PEAK FLOW RATE (CFS) AT CONFLUENCE = .90 1[*************************************************************************** 1- ~~(~~ - ~~~~~~~ - ~~~~ - ~~~~ - - - -: ~ ~ ~ ~ - ~~ - ~~~~ - - - - : ~ ~ ~ ~ - ~~ - ~~~~ -: - - ~ ~ - - - - - - - - - - - - >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< i It=========================================================================== ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL, SUBAREA FLOW-LENGTH = 95.00 I UPSTREAM ELEVATION = 100.00 eB I II I I II DOWNSTRE.1>M ELEVATION = 99.50 ELEVATIO~ DIFFERENCE = .50 TC = .323*[( 95.00**3)/( .50)]**.2 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = SUBAREA RUNOFF (CFS) = .49 TOTAL AREA (ACRES) = .12 5.697 4.741 .8674 TOTAL RUNOFF(CFS) .49 *******:********************************************************************* I FLOW PROCESS FROM NODE 61.00 TO NODE 73.00 IS CODE = 3 --------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I DEPTH OF FLOW IN 6.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) 4.0 UPSTREAM NODE ELEVATION = 95.50 I DOWNSTRE.1>M NODE ELEVATION = 93 .82 FLOWLENGTH(FEET) = 85.00 MANNING'S N I ESTIMATED PIPE DIAMETER (INCH) = 6.00 PIPEFLOW THRU SUBAREA (CFS) .49 TRAVEL TIME(MIN.) = .36 TC(MIN.) = I 3.6 INCHES == .013 NUMBER OF PIPES = 1 6.06 1******:********************************************************************* FLOW.PROCESS FROM NODE 61.00 TO NODE 73.00 IS CODE = 1 ----------------------------------------------------------------------------- I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< -------.--------------------------------------------------------------------- -------,--------------------------------------------------------------------- I TOTAL NUMBER OF STREAMS = 3 CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) = 6.06 I RAINFALL INTENSITY (INCH/HR) = 4.58 TOTAL STREAM AREA (ACRES) = .12 I PEAK FLOW RATE (CFS) AT CONFLUENCE = STREAM 2 ARE: .49 ~*************************************************************************** FLOW PROCESS FROM NODE 70.00 TO NODE 71.00 IS CODE = 21 1_-------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I ASSUMED INITIAL SUBAREA UNIFORM .~ I '. I I I I I DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 220.00 UPSTREAM ELEVATION = 121.90 DOWNSTRE.~ ELEVATION = 107.40 ELEVATION DIFFERENCE = 14.50 TC = .323*[( 220.00**3)/( 14.50)]**.2 4.808 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT SUBAREA RUNOFF (CFS) = TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = .8693 1. 55 .35 TOTAL RUNOFF(CFS) = 1. 55 *'k************************************************************************** I FLOW PROCESS FROM NODE 71.00 TO NODE 72.00 IS CODE = 9 --_._----------------------------------------------------------------------- >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< ~=========================================================================== UPSTREAM NODE ELEVATION = 107.40 I DOWNSTREAM NODE ELEVATION = 100.60 CHANNEL LENGTH THRU SUBAREA(FEET) = 290.00 "V" GUTTER WIDTH(FEET) = 4.00 GUTTER HIKE (FEET) I PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 PAVEMENT CROSSFALL(DECIMAL NOTATION) = .03000 I MAXIMUM DEPTH (FEET) =, 1. 00 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 2.681 SOIL CLASSIFICATION IS "B" I I I I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8494 TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) = AVERAGE FLOWDEPTH(FEET) = .48 FLOODWIDTH(FEET) "V" GUTTER FLOW TRAVEL TIME(MIN) = 11.07 TC(MIN) SUBAREA~EA(ACRES) = .81 SUBAREA RUNOFF(CFS) = SUMMED AREA(ACRES) = 1.16 TOTAL RUNOFF(CFS) END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .53 FLOODWIDTH(FEET) = 30.70 FLOW VELOCITY(FEET/SEC.) = .47 DEPTH*VELOCITY = .100 .44 27.08 16.07 1. 84 3.39 .25 1*************************************************************************** FLOW PROCESS FROM NODE 72.00 TO NODE 73.00 IS CODE = 9 ~--------------------------------------------------------------------------- >>>>>C0MPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< 1=========================================================================== ?I " i I 1'1 I I I I I I I I I UPSTREAM NODE ELEVATION = 100.60 DOWNSTRRAM NODE ELEVATION = 98.60 CHANNEL LENGTH THRU SUBAREA(FEET) = 210.00 "V" GUTTER WIDTH(FEET) = 4.00 GUTTER HIKE(FEET) = PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 PAVEMENT CROSSFALL(DECIMAL NOTATION) = .03000 MA..XIMUJIl DEPTH (FEET) = 1. 00 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 2.047 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8391 TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) AVERAGE FLOWDEPTH(FEET) = .64 FLOODWIDTH(FEET) "V" GUTTER FLOW TRAVEL TIME(MIN) = 10.20 TC(MIN) SUBAREA AREA(ACRES) = .44 SUBAREA RUNOFF (CFS) SUMMED AREA(ACRES) = 1.60 TOTAL RUNOFF(CFS) = END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .67 FLOODWIDTH(FEET) = 39.76 FLOW VELOCITY(FEET/SEC.) = .34 DEPTH*VELOCITY .100 .34 37.95 26.27 .76 4.15 .23 **************************************************************************** I FLOW PROCESS FROM NODE 72.00 TO NODE 73.00 IS CODE = 1 --------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< I ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I I TOTAL ~ruMBER OF STREAMS = 3 CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) = 26.27 RAINFALL INTENSITY (INCH/HR) = 2.05 TOTAL STREAM AREA(ACRES) = 1.60 PEAK FLOW RATE (CFS) l\.T CONFLUENCE = STREAM 3 ARE: 4.15 ** CONFLUENCE DATA ** STREAM RUNOFF Tc INTENSITY AREA NUMBER (CFS) (MIN.) (INCH/HOUR) (ACRE) 1 .90 5.82 4.684 .21 2 .49 6.06 4.585 .12 3 4.15 26.27 2.047 1.60 I*********************************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. 1******'******************************************************************** "2. I 1'1 I I I I I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 3 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 2.29 5.82 4.684 2 2.33 6.06 4.585 3 4.76 26.27 2.047 COMPUTED CONFLUENCE PEAK FLOW RATE(CFS) TOTAL AREA (ACRES) = ESTIMATES ARE = 4.76 1. 93 AS FOLLOWS: Tc (MIN.) = 26.27 1*************************************************************************** FLOW PROCESS FROM NODE 73.00 TO NODE 74.00 IS CODE = 3 ---------------------------------------------------------------------------- I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< Ir=~;;;:=~;=;~~:=~:==~~~~=~:~:=;~;;=~;===:~:=~:~:;;========================== PIPEFLOW VELOCITY(FEET/SEC.) 10.1 I UPSTREAM NODE ELEVATION = 93 .82 DOWNSTREAM NODE ELEVATION 92.00 I FLOWLENGTH (FEET) = 35.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER (INCH) 12.00 NUMBER OF PIPES 1 PIPEFLOW THRU SUBAREA (CFS) 4.76 I TRAVEL TIME (MIN.) = .06 TC (MIN.) 26.33 IJ*************************************************************************** FLOW PROCESS FROM NODE 80.00 TO NODE 81.00 IS CODE = 21 11--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< Ir========~;;;:;~=~:~;~~~=;~;;;~=~~;~;:==================================== DEVELOPMENT IS APARTMENT I TC =. K* [ (LENGTH**3) / (ELEVATION CHANGE)] ** . 2 INITIAL SUBAREA FLOW-LENGTH = 120.00 I UPSTREAM ELEVATION = 101.20 DOWNSTREAM ELEVATION = 101.10 ELEVATION DIFFERENCE = .10 I TC = . 323 * [ ( 12 0 . 00 * * 3) / ( .10)]**.2 = 9.043 ':::>3 I 1'1 i I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.678 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT SUBAREA RUNOFF (CFS) = TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = .8601 1. 01 .32 TOTAL RUNOFF(CFS) 1. 01 ~*************************************************************************** FLOW PROCESS FROM NODE 81.00 TO NODE 102.00 IS CODE = 3 II----------------------------------~---------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ======:===================================================================== DEPTH OF FLOW IN 9.0 INCH PIPE IS 4.5 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) 4.6 UPSTREAM NODE ELEVATION = 99.55 I DOWNSTRE.AM NODE ELEVATION 98.10 FLOWLENGTH(FEET) = 80.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER (INCH) = 9.00 NUMBER OF PIPES = 1 I PIPEFLOW THRU SUBAREA(CFS) = 1. 01 TRAVEL TIME(MIN./ = .29 TC(MIN.) 9.33 I **************************************************************************** I FLOW PROCESS FROM NODE 81.00 TO NODE 102.00 IS CODE = 1 I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< ====================================;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; TOTAL NUMBER OF STREAMS = 3 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 9.33 I RAINFALL INTENSITY (INCH/HR) = 3.62 TOTAL STREAM AREA(ACRES) = .32 PEAK FLOW RATE(CFS) AT CONFLUENCE = 1.01 I f******~********************************************************************* FLOW PROCESS FROM NODE 90.00 TO NODE 91.00 IS CODE = 21 I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< -;;;;;;:;;;;;;;;;;;;;;;=;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-LENGTH = 50.00 eo+ I I I 1 I UPSTREAM ELEVATION = 108.30 DOWNSTRE.AM ELEVATION = 108.00 ELEVATION DIFFERENCE = .30 TC = .323*[( 50.00**3)/( .30)]**.2 = 4.293 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8693 SUBAREA RUNOFF(CFS) = .31 TOTAL AREA (ACRES) = .07 TOTAL RUNOFF(CFS) = .31 ~*************************************************************************** FLOW PROCESS FROM NODE 91.00 TO NODE 102.00 IS CODE = 3 It---------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOVI TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< ~===~=================~===================================================== DEPTH OF FLOW IN 6.0 INCH PIPE IS 1.6 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) = 7.2 UPSTREAM NODE ELEVATION = 104.90 I D01~STREAM NODE ELEVATION = 98.10 FLOWLENGTH(FEET) = 50.00 MANNING'S N ESTIMATED PIPE DIAMETER(INCH) = 6.00 I PIPEFLOW THRU SUBAREA (CFS) = .31 TRAVEL TIME(MIN.) = .12 TC(MIN.) = I .013 NUMBER OF PIPES = 1 5.12 **************************************************************************** I FLOW PROCESS FRON NODE 91.00 TO NODE 102.00 IS CODE = 1 --------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< ~=====================~===================================================== TOTAL NUMBER OF STREAMS = 3 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) 5.12 RAINFALL INTENSITY (INCH/HR) = 5.03 I TOTAL STREAM AREA(ACRES) = .07 PEAK FLOW RATE (CFS) AT CONFLUENCE = .31 I **************************************************************************** I FLOW PROCESS FRON NODE 100.00 TO NODE 101. 00 IS CODE = 21 ----------------------------------------------------------------------------- il >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< qs .1============================================================================ 1 I 1 I 1 I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 100.00 UPSTREAM ELEVATION = 110.30 DOWNSTRE.AM ELEVATION = 107.20 ELEVATION DIFFERENCE = 3.10 TC = .323*[( 100.00**3)/( 3.10)]**.2 = 4.079 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT SUBAREA RUNOFF (CFS) TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = 1. 20 .27 .8693 TOTAL RUNOFF(CFS) = 1. 20 1*************************************************************************** FLOW PROCESS FROM NODE 101.00 TO NODE 102.00 IS CODE = 3 It-:::::~~~~~;;-~~~;;~~~-;~~;~;~~;-;~~~-~~~;~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< ~=======================~~~~~~~~~~~~~~==~~=~~~~~~~~~~~~~~~~~=~=~=====~~===== DEPTH OF FLOW IN 6.0 INCH PIPE IS 4.7 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) = 7.2 UPSTREAM NODE ELEVATION = 104.20 DOWNSTREAM NODE ELEVATION = 98.10 I FLOWLENGTH(FEET) = 105.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER (INCH) = 6.00 NUMBER OF PIPES = 1 I PIPEFLOW THRU SUBAREA (CFS) = 1.20 TRAVEL TIME(MIN.) = .24 TC(MIN.) = 5.24 ~*************************************************************************** I FLOW PROCESS FROM NODE 101.00 TO NODE 102.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< I ----------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I .1 TOTAL NUMBER OF STREAMS = 3 CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) 5.24 RAINFALL INTENSITY (INCH/HR) = 4.96 TO'rAL STREAM AREA (ACRES) = . 27 PEAK FLaN RATE(CFS) AT CONFLUENCE = STREAM 3 ARE: 1. 20 ~ ~ 1 'I ** CONFLUENCE DATA ** STREAM RUNOFF 1 NUMBER (CFS) 1 1.01 2 .31 I 3 1. 20 Tc (MIN. ) 9.33 5.12 5.24 INTENSITY ( INCH/HOUR) 3.615 5.030 4.963 AREA (ACRE) .32 .07 .27 ** * * * *:* * * * * * * * * ** * * * * * * * * * * * * * * * *WARNING* ** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA 1 WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ************************************************************************** 1 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 3 STREAMS. 1 ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY 1 NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 2.03 5.12 5.030 I 2 2.07 5.24 4.963 3 2.11 9.33 3.615 I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE (CFS) 2.07 Tc (MIN.) = 5.24 I TOTAL AREA (ACRES) = .66 It***~~*********************************************************************** FLOW PROCESS FROM NODE 102.00 TO NODE 111.00 IS CODE = 3 i .--------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USIJ~G COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< It=========================================================================== DEPTH OF FLOW IN 12.0 INCH PIPE IS 7.0 INCHES 1 PIPEFLOW VELOCITY(FEET/SEC.) = 4.3 UPSTREAM NODE ELEVATION = 98.10 DOWNSTREAM NODE ELEVATION = 96.40 1 FLOWLENGTH(FEET) = 180.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER (INCH) 12.00 NUMBER OF PIPES 1 PIPEFLOW THRU SUBAREA(CFS) 2.07 I TRAVELTIME(MIN.) = .69 TC(MIN.) = 5.94 1 en I *******1********************************************************************* 'I__~~~~-~~~:~~~-~~~~-~~~~---~~~~~~-=~-~~~~---~~~~~~-~~_:~~~_:___~____________ I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< ======:===================================================================== TOTAL NUMBER OF STREAMS = 2 1 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) 5.94 1 RAINFALL INTENSITY (INCH/HR) = 4.64 TOTAL STREAM AREA(ACRES) = .66 PEAK FLOW RATE(CFS) AT CONFLUENCE = 2.07 I **************************************************************************** 1 FLOW PROCESS FROM NODE 110.00 TO NODE 111.00 IS CODE = 21 I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< =========================================================================== ASSUMED INITIAL SUBAREA UNIFORM 1 DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 1 INITIAL SUBAREA FLOW-LENGTH = 155.00 UPSTREAM ELEVATION = 106.40 DOWNSTREAM ELEVATION = 101.10 1 ELEVATION DIFFERENCE = 5.30 TC = .323*[( 155.00**3)/( 5.30)]**.2 = 4.766 1 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 SOIL CLASSIFICATION IS "B" 1 APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8693 SUBAREA RUNOFF (CFS) = . 71 1 TOTAL AREA (ACRES) = .16 TOTAL RUNOFF(CFS) .71 It*************************************************************************** FLOW PROCESS FROM NODE 110.00 TO NODE 111.00 IS CODE = 1 II-:::::~~~~~~~~~-~~~~;;~~;~~-~~~~~-;~~-~~~;~~~~~~:::::--------------------- >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< 11=========================================================================== TOTAL NUMBER OF STREAMS = 2 1 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) 5.00 RAINFALL INTENSITY (INCH/HR) 5.09 I TOTAL STREAM AREA (ACRES) = .16 Oft - -'-:..:;;;.... .--".-- ,- -_.._._~ 1 '. I I PEAK FLOW RATE (CFS) AT CONFLUENCE .71 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 2.07 2 .71 Tc (MIN. ) 5.94 5.00 INTENSITY ( INCH/HOUR) 4.635 5.093 AREA (ACRE) .66 .16 I ** * * * *:* * * * * * * * * * * * * * * * * * * * ** * * * * *WARNING* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA I WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ******,******************************************************************** 1 RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. 1 I 1 1 I * * PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 2.45 5.00 5.093 2 2.71 5.94 4.635 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE = 2.71 .82 AS FOLLOWS: Tc (MIN.) = 5.94 **************************************************************************** I FLOW PROCESS FROM NODE 111.00 TO NODE 122.00 IS CODE = 3 I ----------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< DEPTH OF FLOW IN 12.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) = 4.7 UPSTREAM NODE ELEVATION = 96.40 DOWNSTREAM NODE ELEVATION = 96.20 FLOWLENGTH(FEET) = 20.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 12.00 PIPEFLOW THRU SUBAREA (CFS) 2.71 TRAVEL TIME(MIN.) = .07 TC(MIN.) 8.3 INCHES .013 NUMBER OF PIPES = 1 6.01 It******,********************************************************************* 0';) _ ._~.c..:..;:____ _. I FLOW PROCESS FROM NODE 111.00 TO NODE 122.00 IS CODE = 1 '1- - - - - -- - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< Ir=;~;~~=:;:;;;=~;=;;;;;;;=:==~============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME OF CONCENTRATION (MIN.) = 6.01 RAINFALL INTENSITY (INCH/HR) = 4.60 TOTAL STREAM AREA(ACRES) = .82 I PEAK FLOW RATE (CFS) AT CONFLUENCE = 2.71 ~*************************************************************************** FLOW PROCESS FROM NODE 120.00 TO NODE 121.00 IS CODE = 21 1--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< It========~;;;::~=;:;;~~=;~;:;;~=~~;~;:==================================== DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 65.00 I UPSTREAM ELEVATION = 102.00 DOWNSTREAM ELEVATION = 100.70 ELEVATION DIFFERENCE = 1.30 I TC = . 323 *[ ( 65 . 00* * 3) / ( 1. 30) ] * * . 2 3 . 748 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8693 I SUBAREA RUNOFF (CFS) -- . 31 TOTAL AREA (ACRES) = . 07 TOTAL RUNOFF (CFS) = . 31 I *******:********************************************************************* I FLOW PROCESS FROM NODE 121.00 TO NODE 122.00 IS CODE = 3 I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< - - -- - - -,- - - - - - -- - - - - - - - - - - - - - - -- - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - ---- - -- ---------------------------------------------------------------------------- I DEPTH OF FLOW IN 6.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) 3.5 I UPSTREAM NODE ELEVATION = 96.50 DOWNSTREAM NODE ELEVATION 96.20 FLOWLENGTH(FEET) = 15.00 MANNING'S N I ESTIM'ATED PIPE DIAMETER (INCH) = 6.00 2.7 INCHES = .013 NUMBER OF PIPES 1 (ei> I PIPEFLOW THRU SUBAREA (CFS) = 'I TRAVEL TIME (MIN.) = .07 1** * * * *;* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ******** * * * * * * * * * * * * * * * * * * FLOW PROCESS FROM NODE 121.00 TO NODE 122.00 IS CODE = 1 It-:::::~~~~~~~;~-~~~~~~~~~~;-~;;~~-;~;-~~~;~~~~~~:::::--------------------- >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< ~===-==-==================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 5.07 RAINFALL INTENSITY (INCH/HR) = 5.05 I TOTAL STREAM AREA (ACRES) = .07 PEAK FLOW RATE(CFS) AT CONFLUENCE = I I I ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 2.71 2 .31 Tc (MIN. ) 6.01 5.07 .31 TC (MIN.) = 5.07 .31 INTENSITY ( INCH/HOUR) 4.605 5.054 AREA (ACRE) .82 .07 ***'k*****************************WARNING********************************** I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA I WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ************************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I ** PEAK I I I I *******,********************************************************************* I FLOW PROCESS FROM NODE STREAM NUMBER 1 2 FLOW RATE RUNOFF (CFS) 2.60 3.00 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = TABLE ** Tc (MIN. ) 5.07 6.01 INTENSITY ( INCH/HOUR) 5.054 4.605 AS FOLLOWS: Tc (MIN.) = ESTIMATES ARE ;;:; 3.00 .89 6.01 132.00 IS CODE = 122.00 TO NODE 3 lo\ II 'I >>.>>>C0MPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>:>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< 1_=========================================================================== . DEPTH OF FLOW IN 12.0 INCH PIPE IS 9.6 INCHES PIPEFL0W VELOCITY(FEET/SEC.) 'I UPSTREAM NODE ELEVATION = DOWNSTREAM NODE ELEVATION FLOWLENGTH(FEET) = 105.00 I ESTIMATED PIPE DIAMETER (INCH) PIPEFLOW THRU SUBAREA (CFS) = I TRAVEL TIME(MIN.) = .39 4.5 96 .20 95.28 MANNING'S N 12.00 3.00 TC(MIN. ) .013 NUMBER OF PIPES 1 6.40 ~******'********************************************************************* FLOW PROCESS FROM NODE 122.00 TO NODE 132.00 IS CODE = 1 1--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< ----------------------------------------------------------------------------- ---------------------------------------------------------------------------- I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME OF CONCENTRATION (MIN. ) 6.40 RAINFALL INTENSITY (INCH/HR) = 4.45 TOTAL STREAM AREA(ACRES) = .89 I PEAK FLOW RATE (CFS) AT CONFLUENCE = 3.00 1I***'k*********************************************************************** FLOW PROCESS FROM NODE 130.00 TO NODE 131.00 IS CODE = 21 11--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< Ir========~;;;:;~=~:~;~~=;~:;;;~=~~;~;:==================================== DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAI~ SUBAREA FLOW-LENGTH = 90.00 I UPSTREAM ELEVATION = 105.30 DOWNSTREAM ELEVATION = 101.10 ELEVATION DIFFERENCE = 4.20 I TC = . 323 * [ ( 90 . 00* * 3) / ( 4 . 20) ] * * . 2 = 3 . 603 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT .8693 I SUBAREA RUNOFF(CFS) = 1.42 \02- I I TOTAL AREA (ACRES) = .32 TOTAL RUNOFF(CFS) = 1. 42 **************************************************************************** I FLOW PROCESS FROM NODE 131.00 TO NODE 132.00 IS CODE = 9 I >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< =========================================================================== I UPSTREAM NODE ELEVATION = 101.10 DOWNSTREAM NODE ELEVATION = 97.40 CHANNEL LENGTH THRU SUBAREA (FEET) = 180.00 I "V" GUTTER WIDTH (FEET) = 4.00 GUTTER HIKE (FEET) PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 PAVEMENT CROSSFALL(DECIMAL NOTATION) = .03000 I MAXIMUM DEPTH (FEET) = 1.00 100 YEAR RAINFALL INTENSITY (INCH/HOUR) I SOIL CLASSIFICATION IS "B" I I I I 3.106 APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8546 TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) AVERAGE FLOWDEPTH(FEET) = .45 FLOODWIDTH(FEET) = "V" GUTTER FLOW TRAVEL TIME(MIN) = 7.30 TC(MIN) = SUBAREA .~EA(ACRES) ~ .48 SUBAREA RUNOFF (CFS) = SUMMED AREA (ACRES) = .80 TOTAL RUNOFF (CFS) END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .50 FLOODWIDTH(FEET) = 28.89 FLOW VELOCITY(FEET/SEC.) = .42 DEPTH*VELOCITY = .100 .41 25.27 12.30 1. 27 2.69 .21 I FLOW PROCESS FROM NODE 131. 00 TO NODE **************************************************************************** 1 132.00 IS CODE = I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< ----------------------------------------------------------------------------- ---------------------------------------------------------------------------- I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT I TIME OF CONCENTRATION (MIN.) = 12.30 RAINFALL INTENSITY (INCH/HR) = 3.11 TOTAL STREAM AREA(ACRES) = .80 I PEAK FLOW RATE (CFS) AT CONFLUENCE = I I STREAM 2 ARE: 2.69 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 3.00 INTENSITY (INCH/HOUR ) 4.447 AREA (ACRE) .89 Tc (MIN.) 6.40 " 103 I 2 2.69 12.30 3.106 .80 rl***_*****************************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE'RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. I ******:******************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) I 1 4.40 6.40 4.447 2 4.78 12.30 3.106 I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE (CFS) -- 4.40 Tc (MIN. ) = 6.40 I TOTAL AREA (ACRES) = 1. 69 1*************************************************************************** FLOW PROCESS FROM NODE 132.00 TO NODE 151.00 IS CODE = 3 ~--------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< =========================================================================== DEPTH OF FLOW IN 15.0 INCH PIPE IS 11.0 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) = 4.6 UPSTREAM NODE ELEVATION = 95.28 I I I DOWNSTREAM NODE ELEVATION = FLOWLENGTH(FEET) = 55.00 ESTIMATED PIPE DIAMETER (INCH) PIPEFLOW THRU SUBAREA (CFS) = TRAVEL TIME(MIN.) = .20 .013 NUMBER OF PIPES 1 6.60 **************************************************************************** I FLOW PROCESS FROM NODE 132.00 TO NODE 151.00 IS CODE = 10 --------------------------------------------------------------------------- >>>>>MAIN-STREAM MEMORY COPIED ONTO MEMORY BANK # 1 <<<<< ~=========================================================================== I \oJ,. I *******:********************************************************************* 'I FLOW PROCESS FROM NODE 140.00 TO NODE 141.00 IS CODE = 21 -----_._-------------------------------------------------------------------- I I I I I I *******:********************************************************************* >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< 1=========================================================================== . ASSUMED INITI1~L SUBAREA UNIFORM .DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 330.00 UPSTREAM ELEVATION = 114.80 DOWNSTRE.AM ELEVATION = 101.50 ELEVATION DIFFERENCE = 13.30 TC = .323*[( 330.00**3)/( 13.30)]**.2 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8661 SUBAREA RUNOFF(CFS) 1.64 TOTAL AREA (ACRES) = .42 6.239 4.510 TOTAL RUNOFF(CFS) 1. 64 1- ~~~~ -~~~:~:: - ~~~!~ - ~~~~ - - - ~ ~ ~ ~ ~ ~ - ~~ - ~~~~ - - - ~ ~ ~ ~ ~ ~ - ~: - :~~~ - : - - - ~ - - - - - - - - - - - - >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< I ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I DEPTH OF FLOW IN 12.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) = 4.2 UPSTREAM NODE ELEVATION = 97.35 DOWNSTRE.AM NODE ELEVATION = 96.50 FLOWLENGTH(FEET) = 85.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 12.00 PIPEFLOW THRU SUBAREA (CFS) = 1.64 TRAVEL TIME(MIN.) = .34 TC(MIN.) = 6.0 INCHES = .013 NUMBER OF PIPES = 1 6.58 i******I********************************************************************* FLOW PROCESS FROM NODE 141.00 TO NODE 143.00 IS CODE = 1 I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< -=========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) 6.58 I RAINFALL INTENSITY (INCH/HR) = 4.38 \CC3 I TOTAL STREAM AREA (ACRES) = .42 'I PEAK FLOW RATE(CFS) AT CONFLUENCE = 1. 64 1* * * * * * ,* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * FLOW PROCESS FROM NODE 142.00 TO NODE 143.00 IS CODE = 21 It-:::::~~~~~~~-~~;~~~-~~~;~~~-~~~~~~-~~~~~~~:::::------------------------ I=========~;;;:;~=~:~;~~~=;~;;;;~=~~;~;:==================================== DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 75.00 I UPSTREAM ELEVATION = 102.30 DOWNSTREAM ELEVATION = 99.00 ELEVATION DIFFERENCE = 3.30 I TC = . 323 * [ ( 75 . 00 ** 3) / ( 3 . 30) ] * * . 2 = 3 . 389 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 I SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8693 I SUBAREA RUNOFF(CFS) .31 TOTAL AREA(ACRES) = .07 TOTAL RUNOFF(CFS) .31 I *******:********************************************************************* I FLOW PROCESS FROM NODE 142.00 TO NODE 143.00 IS CODE = 1 --------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< I ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) = 5.00 RAINFALL INTENSITY (INCH/HR) = 5.09 TOTAL STREAM AREA (ACRES) = .07 PEAK FLOW RATE (CFS) AT CONFLUENCE = STREAM 2 ARE: .31 ** CONFLUENCE DATA *,' STREAM RUNOFF NUMBER (CFS) 1 1.64 2 .31 Tc (MIN. ) 6.58 5.00 INTENSITY ( INCH/HOUR) 4.381 5.093 AREA (ACRE) .42 .07 I * ** * **i** *** * * * * * *** * * * * * * * * * * * * * *WARNING* * * ** * * * * * * * * * ***** * * * * ** * * * *** * * * \QD I II I I I I I I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ONTHE!RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ************************************************************************** RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. * * PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 1. 56 5.00 5.093 2 1. 91 6.58 4.381 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE -- 1. 91 .49 AS FOLLOWS: Tc (MIN.) = 6.58 ~******'********************************************************************* FLOW PROCESS FROM NODE 143.00 TO NODE 151.00 IS CODE = 3 II-:::::~~~~~;~-~~~~;~~~-;~~~~;~~~-;~~~-~~~~~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< It=~;;;:=;;=;~~:=~:==~~~~=~:~:=;~;;=~;===:~:=~:~:;;========================== I PIPEFLOW VELOCITY(FEET/SEC.) 4.3 UPSTREAM NODE ELEVATION = 96.50 DOWNSTRE.AM NODE ELEVATION = 94.90 I FLOWLENGTH(FEET) = 160.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER (INCH) = 12.00 NUMBER OF PIPES = 1 I PIPEFLOW THRU SUBAREA (CFS) 1. 91 TRAVEL TIME(MIN.) = .61 TC(MIN.) = 7.19 Il*************************************************************************** FLOW PROCESS FROM NODE 143.00 TO NODE 151.00 IS CODE = 11 ~--------------------------------------------------------------------------- >>>>>CONFLUENCE MEMORY BANK # 1 WITH THE MAIN-STREAM MEMORY<<<<< 1=========================================================================== I ** MAIN I STREAM NUMBER 1 STREAM CONFLUENCE DATA ** RUNOFF Tc INTENSITY (CFS) (MIN.) (INCH/HOUR) 1.91 7.19 4.171 AREA (ACRE) .49 lei. ~ I C;I I * * MEMOR Y STREAM NUMBER 1 BANK # RUNOFF (CFS) 4.40 1 CONFLUENCE DATA ** Tc INTENSITY (MIN. ) (INCH/HOUR) 6.60 4.372 AREA (ACRE) 1. 69 I * * *** *;*** * * * * * * * ** * * * * * * * * * ** * * * *WARNING* * * * ** * * * * * * * * * * * * * * * * * ** * * * * * * * * * IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE!RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ******:******************************************************************** I I I COMPUTED CONFLUENCE I PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 6.15 6.60 4.372 2 6.10 7.19 4.171 ESTIMATES ARE 6.15 2.18 AS FOLLOWS: Tc (MIN.) = 6.60 *******:********************************************************************* I FLOW PROCESS FROM NODE 143.00 TO NODE 151.00 IS CODE = 10 I >>>>>MAIN-STREAM MEMORY COPIED ONTO MEMORY BANK # 2 <<<<< ======:===================================================================== Il*************************************************************************** I-~~~~-~~~~~~~-~~~~-~~~~---~~~~~~-~~-~~~~---~~~~~~-~~-~~~~_:_-~~------------ >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< It=========================================================================== ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT I TC = K* [(LENGTH**3) / (ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 145.00 I UPSTREAM ELEVATION = 101.40 DOWNSTREAM ELEVATION = 98.50 ELEVATION DIFFERENCE = 2.90 I TC = .323*[( 145.00**3)/( 2.90)]**.2 100 ~EAR RAINFALL INTENSITY (INCH/HOUR) I SOIL CLASSIFICATION IS "B" 5.166 5.003 ,~ I 1'1 I I APARTMENT DEVELOPMENT SUBAREA RUNOFF(CFS) - TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = .8688 .78 .18 TOTAL RUNOFF(CFS) = .78 *******,********************************************************************* I FLOW PROCESS FROM NODE 150.00 TO NODE 151.00 IS CODE = 11 --------------------------------------------------------------------------- >>>>>CONFLUENCE MEMORY BANK # 2 WITH THE MAIN-STREAM MEMORY<<<<< ~=========================================================================== I ** MAIN STREAM CONFLUENCE DATA ** STREAM RUNOFF Tc INTENSITY AREA NUMBER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) I 1 .78 5.17 5.003 .18 I ** MEMORY BANK # 2 CONFLUENCE DATA ** STREAM RUNOFF Tc INTENSITY AREA NUMBER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) I 1 6.15 6.60 4.372 2.18 I * * * ***,* * * * * * * * * * * * * * * * * * * * * * * * * **WARNING* * * * * * *** * * * * * * * * * * * * * * * * * * * * * * * * * IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE:RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA I WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ******:******************************************************************** I I I COMPUTED CONFLUENCE I PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) (INCH/HOUR) 1 5.59 5.17 5.003 2 6.83 6.60 4.372 ESTIMATES ARE = 6.83 2.36 AS FOLLOWS: Tc (MIN.) = 6.60 *******,********************************************************************* I FLOW PROCESS FROM NODE 151.00 TO NODE 152.00 IS CODE = 3 -----_._-------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOlV TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< ----------------------------------------------------------------------------- ---------------------------------------------------------------------------- I DEPTH OF FLOW IN 12.0 INCH PIPE IS 7.4 INCHES t\f) I 1'1 I I PIPEFLOW VELOCITY(FEET/SEC.) UPSTREAM NODE ELEVATION = DOWNSTRE.AM NODE ELEVATION FLOWLENGTH(FEET) = 30.00 ESTIMATED PIPE DIAMETER (INCH) PIPEFLOW THRU SUBAREA (CFS) TRAVEL TIME(MIN.) = .04 13.5 94.90 92 .23 MANNING'S N 12.00 6.83 TC (MIN.) = .013 NUMBER OF PIPES 1 6.64 IJ*************************************************************************** FLOW PROCESS FROM NODE 155.50 TO NODE 155.00 IS CODE = 7 1--------------------------------------------------------------------------- >>>>>USER SPECIFIED HYDROLOGY INFORMATION AT NODE<<<<< If=~;;::;;;~~;~;~=~:~~;;=~:;=~;=;~~~~:;:===================================== TC(MIN) = 6.80 RAIN INTENSITY (INCH/HOUR) = 4.30 I TOTAL AREA (ACRES) = 1 . 02 TOTAL RUNOFF (CFS) = 3.80 11*************************************************************************** FLOW PROCESS FROM NODE 155.00 TO NODE 161.00 IS CODE = 3 II-:::::~~~~;~~-~~~~;~;~-~~~~~;~~~-~~;;-~;~~~~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< 11=========================================================================== DEPTH OF FLOW IN 12.0 INCH PIPE IS 6.1 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) = 9.4 UPSTREAM NODE ELEVATION = 116.97 DOWNSTREAM NODE ELEVATION = 102.37 I FLOWLENGTH (FEET) = 295.00 MANNING'S N .013 ESTIMATED PIPE DIAMETER(INCH) = 12.00 NUMBER OF PIPES = 1 I PIPEFLOW THRU SUBAREA (CFS) 3.80 TRAVELTIME(MIN.) = .52 TC(MIN.) = 7.32 ~*************************************************************************** FLOW PROCESS FR0/1 NODE 155.00 TO NODE 161.00 IS CODE = 1 11--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< It=;~;~~=~:;;:=~;=;;:;;;;=:==~==============================~=============== I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) 7.32 RAINFALL INTENSITY (INCH/HR) = 4.13 I TOTAL STREAM AREA (ACRES) = 1.02 \\0 ,I I " PEAK FLOW RATE (CFS) 1,T CONFLUENCE I 3.80 *******:********************************************************************* , I FLOW PROCESS FROl1 NODE 160.00 TO NODE 161.00 IS CODE = 21 I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< =========================================================================== i I I I I I I . ASSUMED INITI1,L SUBAREA UNIFORM ,DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 300.00 UPSTREAM ELEVATION = 122.00 DOWNSTREAM ELEVATION = 108.70 ELEVATION DIFFERENCE = 13.30 TC = .323*[( 300.00**3)/( 13.30)]**.2 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = SOIL CLASSIFICATION IS "B" AP.~TMENT DEVELOPMENT RUNOFF COEFFICIENT = SUBAREA RUNOFF (CFS) = 1.73 TOTAL AREA (ACRES) = .43 = 5.893 4.654 .8669 TOTAL RUNOFF (CFS) = 1. 73 *******,********************************************************************* I FLOW PROCESS FROM NODE 160.00 TO NODE 161.00 IS CODE = 1 ---------------------------------------------------------------------------- I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>'AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< =======:===================================================================== I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT I TIME OF CONCENTRATION (MIN. ) 5.89 RAINFALL INTENSITY (INCH/HR) = 4.65 TOTAL STREAM AREA (ACRES) = .43 I PEAK FLOW RATE (CFS) AT CONFLUENCE = I I STREAM 2 ARE: 1. 73 ** CONFLUENCE DATA U STREAM RUNOFF NUMBER (CFS) 1 3.80 2 1.73 Tc INTENSITY ( INCH/HOUR) 4.130 4.654 AREA (ACRE) 1. 02 .43 (MIN. ) 7.32 5.89 I * * * * * *i* * * * * * * * * * * * * * *"k * * * * * * * * * * *WARNING* * ** * * * ** * * * * ***** * * * * * * * * * * ** * * * * IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA \\\ I I WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. II ************************************************************************** , RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO I CONFLUENCE FORMULA USED FOR 2 STREAMS. I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) I 1 4.79 5.89 4.654 2 5.34 7.32 4.130 I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE(CFS) -- 5.34 Tc (MIN. ) = 7.32 I TOTAL AREA (ACRES) = 1.45 11******,********************************************************************* FLOW PROCESS FROM NODE 161.00 TO NODE 171.00 IS CODE = 3 11--------------------------------------------------------------------------- >>>>>.COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< II >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< =========================================================================== DEPTH OF FLOW IN 12.0 INCH PIPE IS 9.7 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) = 7.8 UPSTREAM NODE ELEVATION = 102.37 DOWNSTREAM NODE ELEVATION = 98.60 I FLOWLENGTH (FEET) = 140.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 12.00 I PIPEFLOW THRU SUBAREA(CFS) = 5.34 TRAVEL TIME(MIN.) = .30 TC(MIN.) = I .013 NUMBER OF PIPES = 1 7.62 **************************************************************************** I FLOW PROCESS FROM NODE 161.00 TO NODE 171.00 IS CODE = 1 --------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< ~=========================================================================== TOTAL Nl~BER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 7.62 RA.INFALL INTENSITY (INCH/HR) = 4.04 I TOTAL STREAM AREA(ACRES) = 1.45 PEAKiFLOW RATE (CFS) AT CONFLUENCE = 5.34 I \\1.- I :1 * * * * * *,* * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * ** * * * * * * * * * * * ** ** * * ** * * * * * * * * * * * * * * * FLOW PROCESS FROM NODE 170.00 TO NODE 171. 00 IS CODE = 21 ----------------------------------------------------------------------------- I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ----------------------------------------------------------------------------- ---------------------------------------------------------------------------- I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-LENGTH = 210.00 UPST~EAM ELEVATION = 113.60 I DOWNSTREAM ELEVATION = 103.60 ELEVATION DIFFERENCE = 10.00 TC = .323*[( 210.00**3)/( 10.00)]**.2 I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = SOIL CLASSIFICATION IS liB" I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = SUBAREA RUNOFF (CFS) -- 1 . 37 TOTAL AREA (ACRES) = .31 I = 5.037 5.073 .8692 TOTAL RUNOFF(CFS) = 1. 37 1*************************************************************************** FLOW PROCESS FROM NODE 170.00 TO NODE 171.00 IS CODE = 1 -------.--------------------------------------------------------------------- I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< Ir=;~;~=:;:;;;=~;=;;;;::;=:==~============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: I TIME OF CONCENTRATION (MIN.) = 5.04 RAINFALL INTENSITY (INCH/HR) = 5.07 I TOTAL STREAM AREA (ACRES) = . 31 PEAK FLOW RATE (CFS) AT CONFLUENCE = I I 1. 37 ** CONFLUENCE DATA *- STREAM RUNOFF Tc INTENSITY AREA NUMBER (CFS) (MIN.) (INCH/HOUR) (ACRE) 1 5.34 7.62 4.040 1.45 2 1.37 5.04 5.073 .31 I*********************************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. 1************************************************************************** \\-; '.. I I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I I I I I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 4.90 5.04 5.073 2 6.43 7.62 4.040 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE = 6.43 1. 76 AS FOLLOWS: Tc (MIN.) = 7.62 *******:********************************************************************* I FLOW PROCESS FROM NODE 171.00 TO NODE 172.00 IS CODE = 3 --------------------------------------------------------------------------- DEPTH OF FLOW IN 18.0 INCH PIPE IS 13.4 INCHES PIPEFLOW VELOCITY(FEET/SEC.) 4.6 UPSTREAM NODE ELEVATION = 98.60 DOWNSTREAM NODE ELEVATION 98.32 FLOWLENGTH(FEET) = 52.00 MANNING'S N ESTIMATED PIPE DIAMETER(INCH) = 18.00 PIPEFLOW THRU SUBAREA (CFS) = 6.43 TRAVEL TIME(MIN.) = .19 TC(MIN.) = 7.81 It=========================================================================== END OF STUDY SUMMARY: I PEAK FLOW RATE (CFS) = 6.43 Tc (MIN.) = 7.81 TOTAL AREA(ACRES) = 1.76 >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I .013 NUMBER OF PIPES = 1 ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I END OF RATIONAL METHOD ANALYSIS I I I I \\1\ I ~I * * ** * *1* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM BASED ON I I I I I RIVERSIDE COUNTY FLOOD CONTROL & WATER CONSERVATION DISTRICT (RCFC&WCD) 1978 HYDROLOGY MANUAL (c) Copyright 1982-96 Advanced Engineering Software (aes) Ver. 1.5A Release Date: 01/01/96 License ID 1261 Analysis prepared by: RICK ENGINEERING COMPANY WATER RESOURCES DIVISION 5620 FRIARS ROAD, SAN DIEGO, CA 92110 (619) 291-0707 ******.******************** DESCRIPTION OF STUDY ************************** I IN 13.122 - TRACT NO. 23304 DEVELOPED CONDITION 100-YR, 1-HR, STORM EVENT FOR TRIBUTARY AREAS SOUTH * * * OF LONG CANYON WASH --- MODELED BY S.M.L. ON AUGUST 26, 1998 * 1************************************************************************** I FILE NAME: 13122B.DAT TIME/DATE OF STUDY: 14:49 8/26/1998 I USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: I USER SPECIFIED STORM EVENT(YEAR) = 100.00 SPECIFIED MINIMUM PIPE SIZE(INCH) = 4.00 SPECIFIED PERCENT OF GRADIENTS (DECIMAL) TO USE 110-YEAR STORM 10-MINUTE INTENSITY (INCH/HOUR) = 10-YEAR STORM 60-MINUTE INTENSITY (INCH/HOUR) = I lOa-YEAR STORM la-MINUTE INTENSITY (INCH/HOUR) lOa-YEAR STORM 60-MINUTE INTENSITY (INCH/HOUR) SLOPE OF 10-YEAR INTENSITY-DURATION CURVE = I SLOPE OF 100-YEAR INTENSITY-DURATION CURVE = COMPUTED RAINFALL INTENSITY DATA: I STORM EVENT = 100.00 1-HOUR INTENSITY (INCH/HOUR) = 1.3000 SLOPE OF INTENSITY DURATION CURVE = .5496 RCFC&WCD HYDROLOGY MANUAL "C"-VALUES USED I NOTE: COMPUTE CONFLUENCE VALUES ACCORDING TO RCFC&WCD HYDROLOGY MANUAL AND IGNORE OTHER CONFLUENCE COMBINATIONS FOR DOWNSTREAM ANALYSES I FOR FRICTION 2.360 .880 3.480 1.300 .5505732 .5495536 SLOPE = .85 **************************************************************************** I FLOW PROCESS FROM NODE 200.00 TO NODE 201.00 IS CODE = 21 III I ---------------------------------------------------------------------------- ,( >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< : -=========================================================================== I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-LENGTH = 220.00 UPSTREAM ELEVATION = 98.00 I DOWNSTREAM ELEVATION = 95.50 ELEVATION DIFFERENCE = 2.50 TC = .323*[( 220.00**3)/( 2.50)]**.2 I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = SOIL CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = SUBAREA RUNOFF (CFS) 1.08 TOTAL AREA (ACRES) = .29 I = 6.834 4.290 .8647 TOTAL RUNOFF(CFS) 1. 08 **************************************************************************** I FLOW PROCESS FRml NODE 201.00 TO NODE 202.00 IS CODE = 9 I >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< =========================================================================== UPSTREAM NODE ELEVATION = 95.50 I DOWNSTREAM NODE ELEVATION = 94.80 CHANNEL LENGTH THRU SUBAREA (FEET) = 140.00 I "V" GUTTER WIDTH (FEET) = 4.00 GUTTER HIKE (FEET) = PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 PAVEMENT CROSSFALL(DECIMAL NOTATION) = .03000 I MA.,'GMUl"J DEPTH (FEET) = 1.00 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 2.534 I SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8473 Tm,VELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) I AVERAGE FLOWDEPTH (FEET) = .52 FLOODWIDTH (FEET) "V" GUTTER FLOW TRAVEL TIME(MIN) = 10.98 TC(MIN) I SUBAREA AREA (ACRES) = .35 SUBAREA RUNOFF (CFS) SID1MEDAREA(ACRES) = .64 TOTAL RUNOFF(CFS) = END OF SUBAREA "V" GUTTER HYDRAULICS: I DEPTH (FEET) = .56 FLOODWIDTH (FEET) = 32.51 FLOW VELOCITY(FEET/SEC.) = .22 DEPTH*VELOCITY I .100 .21 29.80 17.81 .75 1. 83 .13 I FLOW PROCESS FROM NODE 202.00 TO NODE **************************************************************************** 9 203.00 IS CODE = /18 I 'I >>>>>C0MPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< = =::;;::;;::;; ::;;;= = =:;;; = = ==== = = = = = =::;; =::;;::;;::;;::;;::;:::;;::;;::;;:;;;:;;=;;;;;;;;;; = = = = == = = = =::;;::;;::;; = = == ==== ==::: = = = =::;;::;;::;; =;::::::;;::;;::;;::;;::;; = UPSTREAM NODE ELEVATION = 94.80 I DOWNSTREAM NODE ELEVATION = 93.60 CHANNEL LENGTH THRU SUBAREA(FEET) = 250.00 I "V" GUTTER WIDTH (FEET) = 4.00 GUTTER HIKE (FEET) = PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 I PAVEMENT CROSSFALL(DECIMAL NOTATION) = .03000 MAXIMUN DEPTH (FEET) = 1. 00 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 1.751 I SOIL CLASSIFICATION IS "B" I I I I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8326 T~~VELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) AVERAGE FLOWDEPTH(FEET) = .64 FLOODWIDTH(FEET) = "V" GUTTER FLOW TRAVEL TIME(MIN) = 17.09 TC(MIN) = SUBAREA AREA(ACRES) = 1.16 SUBAREA RUNOFF (CFS) = SUMMED AREA(ACRES) = 1.80 TOTAL RUNOFF (CFS) = END OF'SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .71 FLOODWIDTH(FEET) = 42.47 FLOW VELOCITY(FEET/SEC.) = .26 DEPTH*VELOCITY = .100 .24 37.95 34.91 1. 69 3.52 .18 I FLOW PROCESS FROM NODE 203.00 TO NODE **************************************************************************** 3 204.00 IS CODE = I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< 5.8 INCHES -----------------------.----------------------------------------------------- ---------------------------------------------------------------------------- ,I I I I DEPTH OF FLOW IN 9.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) = 11.8 UPSTREAM NODE ELEVATION = 90.10 DOWNSTREAM NODE ELEVATION = 86.21 FLOWLENGTH(FEET) = 40.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 9.00 PIPEFLOW THRU SUBAREA(CFS) 3.52 TRAVEL TIME(MIN.) = .06 TC(MIN.) = .013 NUMBER OF PIPES = 34.96 1 1*************************************************************************** FLOW PROCESS FROM NODE 230.00 TO NODE 231.00 IS CODE = 21 II-:::::~~~~~~~-~~~~~~--~~~~~~~-~~~~~-~~~~~~~:::::------------------------ I ASSUMED INITIAL SUBAREA UNIFORM ----------------------------------------------------------------------------- ---------------------------------------------------------------------------- II~ I 'I I I I I I *******.********************************************************************* DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 65.00 UPSTREAM ELEVATION = 98.50 DOWNSTREAM ELEVATION = 97.10 ELEVATION DIFFERENCE = 1.40 TC = .323*[( 65.00**3)/( 1.40)]**.2 = 3.693 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8693 SUBAREA RUNOFF (CFS) .27 TOTAL AREA (ACRES) = . 06 TOTAL RUNOFF(CFS) .27 I FLOW PROCESS FROM NODE 231.00 TO NODE 241.00 IS CODE = 3 ---------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ----------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I DEPTH OF FLOW IN 6.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) = 4.6 UPSTREAM NODE ELEVATION = 95.55 DOWNSTREAM NODE ELEVATION 94.65 FLOWLENGTH(FEET) = 20.00 MANNING'S N ESTIMATED PIPE DIAMETER(INCH) = 6.00 PIPEFLOW THRU SUBAREA (CFS) = .27 TRAVEL TIME(MIN.) = .07 TC(MIN.) 2.0 INCHES = .013 NUMBER OF PIPES 1 5.07 i*************************************************************************** FLOW PROCESS FROM NODE 231.00 TO NODE 241.00 IS CODE = 1 I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< -===~======================================================================= TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) 5.07 I RAINFALL INTENSITY (INCH/HR) = 5.05 TOTAL STREAM ARE1\. (ACRES) = .06 I PEAK FLOW RATE (CFS) AT CONFLUENCE = STREAM 1 ARE: .27 1[*************************************************************************** 1'20 I FLOW PROCESS FROM NODE 240.00 TO NODE 241.00 IS CODE = 21 ., - :::::~;~~~~ - ~;;~~~ -- ~~~;~~~ - ~~;;;~ - ~~~~~~::::: - - - - - - - - - - - - - - - - - - - - - - -- I====;====~:;;:;~=~:~;~~~=;~;;;~=~~;~;:==================================== DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 100.00 UPSTREAM ELEVATION = 98.50 I DOWNSTRE.AM ELEVATION = 96 .30 ELEVATION DIFFERENCE = 2.20 I TC = . 323 * [ ( 10 0 . 00 * * 3) / ( 2 . 20) ] * * . 2 4 . 368 COI-lPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 I SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8693 I SUBAREA RUNOFF (CFS) -- 1.11 TOTAL AREA(ACRES) = .25 TOTAL RUNOFF(CFS) = 1.11 1(*************************************************************************** I FLOW PROCESS FROM NODE 240.00 TO NODE 241.00 IS CODE = 1 ----------------------.----------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< I ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT TI!1E OF CONCENTRATION (MIN.) = 5.00 RAINFALL INTENSITY (INCH/HR) = 5.09 TOTAL STREAM AREh(ACRES) = .25 PEAK FLOW RATE (CFS) AT CONFLUENCE = STREAM 2 ARE: 1.11 * * CONFLUENCE DATA *.- STREAM RUNOFF NUMBER (CFS) 1 .27 2 1.11 Tc INTENSITY ( INCH/HOUR) 5.053 5.093 AREA (ACRE) .06 .25 (MIN. ) 5.07 5.00 I*********************************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WII~L NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ************************************************************************** I IZ.I I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO I CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** I STREAM RUNOFF Tc INTENSITY NUl~BER (CFS) (MIN. ) ( INCH/HOUR) I 1 1. 37 5.00 5.093 2 1. 36 5.07 5.053 I I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE (CFS) 1. 37 Tc (MIN. ) = 5.00 I TOTAL AREA (ACRES) = .31 11*************************************************************************** FLOW PROCESS FROM NODE 241.00 TO NODE 251.00 IS CODE = 3 II-:::::~~~;~;;-;~;~;~~~-;~~~~;~~~-;~~~-~~~~~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< 11=========================================================================== DEPTH OF FLOW IN 12.0 INCH PIPE IS 6.6 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) = 3.1 UPSTREAM NODE ELEVATION = 94.65 DOWNSTRE.AM NODE ELEVATION = 94.15 I FLOWLENGTH (FEET) = 100.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER(INCH) = 12.00 NUMBER OF PIPES = 1 I PIPEFLGlW THRU SUBAREA (CFS) 1.37 TRAVEL TIME(MIN.) = .54 TC(MIN.) = 5.54 '*************************************************************************** II-~~~~-~~~~~~~-~~~~-~~~~---~~~~~~-~~-~~~~---~~~~~~-~~-~~~~-:---~------------ >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< It=========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 5.54 RAINFALL INTENSITY (INCH/HR) = 4.81 I TOTAL STREAM AREA (ACRES) = . 31 PEAK FLOW RATE (CFS) AT CONFLUENCE = 1.37 I **************************************************************************** I FLOW PROCESS FROM NODE 250.00 TO NODE 251.00 IS CODE = 21 JZ2 I I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< =========================================================================== I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC = K* [ (LENGTH*"3) / (ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-LENGTH = 100.00 UPSTREAM ELEVATION = 97.60 DOWNSTREAM ELEVATION = 95.90 I ELEVATION DIFFERENCE = 1.70 TC = .323*[( 100.00**3)/( 1.70)]**.2 4.599 I COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 SOIL CLASSIFICATION IS "B" II APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = . 8693 SUBAREA RUNOFF(CFS) = 1.42 I TOTAL AREA (ACRES) = .32 TOTAL RUNOFF (CFS) = 1.42 11*************************************************************************** FLOW PROCESS FROM NODE 250.00 TO NODE 251.00 IS CODE = 1 II-:::::;~~~~~~;~-~~;~~~~;~~;-~;~~~-;~~-~~~;~~~~~~:::::--------------------- >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< 11==='"======================================================================= TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 5.00 RAINFAbL INTENSITY (INCH/HR) = 5.09 II TOTAL STREAM ARE1\(ACRES) = .32 PEAK FLOW RATE(CFS) AT CONFLUENCE = II I I 1.42 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 1.37 2 1. 42 Tc INTENSITY (INCH/HOUR) 4.813 5.093 AREA (ACRE) .31 .32 (MIN. ) 5.54 5.00 * * * * * *;* * * * * * * * * * * * * * * * * * * * * * * * * * *WARNING* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. 1* ** * * *i* * * * * * * * * * ** * * * * * * * * * * * * * * *** ** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO 123 .;: . -..- .__~ ""':;=c---,..;....;;....:.. . I I II I 1 I CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 2.6:; 5.00 5.093 2 2.71 5.54 4.813 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE = 2.65 .63 AS FOLLOWS: Tc (MIN.) = 5.00 **************************************************************************** I FLOW PROCESS FROM NODE 251.00 TO NODE 261.00 IS CODE = 3 ----.------------------------------------------------------------------------ I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< ----.------------------------------------------------------------------------ ----.------------------------------------------------------------------------ I DEPTH OF FLOW IN 12.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) = 4.7 I UPSTREAM NODE ELEVATION = 94.15 DOWNSTREAM NODE ELEVATION 92.90 FLOWLENGTH(FEET) = 125.00 MANNING'S N I ESTIMATED PIPE DIAMETER (INCH) = 12.00 PIPEFLOW THRU SUBAREA (CFS) = 2.65 1 TRAVEL' TIME (MIN.) = .45 TC (MIN. ) 8.2 INCHES ;;;; .013 NUMBER OF PIPES = 1 5.45 11*************************************************************************** FLOW PROCESS FROM NODE 251. 00 TO NODE 261. 00 IS CODE = 1 I-:::::~;~~~~~;;-~~~;~;~~;~;-~;~;~-;~~-~~~;~~;~~;:::::--------------------- -------,--------------------------------------------------------------------- ---------------------------------------------------------------------------- I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) 5.45 I RAINFALL INTENSITY (INCH/HR) = 4.86 TOTAL STREAM AREA(ACRES) = .63 I PEAK FLOW RATE (CFS) AT CONFLUENCE = STREAM 1 ARE: 2.65 1*************************************************************************** FLOW PROCESS FROM NODE 260.00 TO NODE 261.00 IS CODE = 21 1--------------------------------------------------------------------------- 124 ',,::;:::-, ----~-~~.~. I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< It========~:;;;:;~=~:~;~~~=;~;;;;~=~~;~::==================================== DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 230.00 I UPSTREAM ELEVATION = 98.00 DOWNSTREAM ELEVATION = 95.70 ELEVATION DIFFERENCE = 2.30 II TC = . 323 * [ ( 230 . 00 * * 3) / ( 2 . 30) ] ** . 2 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = II SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8640 SUBAREA RUNOFF(CFS) 2.32 I TOTAL AREA (ACRES) = .64 7.137 4.189 TOTAL RUNOFF(CFS) 2.32 11*************************************************************************** FLOW PROCESS FROM NODE 260.00 TO NODE 261.00 IS CODE = 1 11--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< II >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< =========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 7.14 I RAINFALL INTENSITY (INCH/HR) = 4.19 TOTAL STREAM AREA (ACRES) = .64 PEAK FLOW RATE(CFS) AT CONFLUENCE = I II I 2.32 ** CONFLUENCE DATA ** STREAM RUNOFF Nm~BER (CFS) 1 2.65 2 2.32 Tc INTENSITY ( INCH/HOUR) 4.859 4.189 AREA (ACRE) .63 .64 (MIN. ) 5.45 7.14 *********************************WARNING********************************** I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA II WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ******:******************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I 1'2.'3 I "1 I I I ,I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Te INTENSITY NUNBER (CFS) (MIN. ) ( INCH/HOUR) 1 4.42 5.45 4.859 2 4.60 7.14 4.189 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE -- 4.42 1. 27 AS FOLLOWS: Te (MIN.) = 5.45 1*************************************************************************** FLOW PROCESS FROM NODE 261.00 TO NODE 262.00 IS CODE = 3 -----------------------.----------------------------------------------------- I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< It=~;;;:=~;=;~~:=~:==~~~~=~:~:=;~;;=~;===;~:=~:~:;;========================== PIPEFLOW VELOCITY(FEET/SEC.) 11.6 I UPSTREAM NODE ELEVATION = 92.90 DOWNSTREAM NODE ELEV1.TION 92.03 I FLOWLENGTH(FEET) = 11.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER (INCH) = 12.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA (CFS) = 4.42 I TRAVEL TIME(MIN.) = .02 TC(MIN.) = 5.46 11******:********************************************************************* FLOW PROCESS FROM NODE 261.00 TO NODE 262.00 IS CODE = 10 ~--------------------------------------------------------------------------- >>>>>MAIN-STREAM MEMORY COPIED ONTO MEMORY BANK # 1 <<<<< 1[=========================================================================== ~******:********************************************************************* FLOW PROCESS FROM NODE 210.50 TO NODE 210.00 IS CODE = 7 1_-------------------------------------------------------------------------- >>>>>USER SPECIFIED HYDROLOGY INFORMATION AT NODE<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I USER-SPECIFIED VALUES ARE AS FOLLOWS: TC(MIN) = 11.60 RAIN INTENSITY (INCH/HOUR) = 3.21 I TOTAL AREA (ACRES) = 13.40 TOTAL RUNOFF(CFS) = 14.00 It * * * * * *'* * * * * * * * * * * * * ***** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * I"U:> I FLOW PROCESS FRml NODE 210.00 TO NODE 221.00 IS CODE = 3 '1- - - -- - - - - -.- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< ~=========================================================================== DEPTH OF FLOW IN 21.0 INCH PIPE IS 13.7 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) = 8.4 UPSTREAM NODE ELEVATION = 95.06 DOWNSTREAM NODE ELEVATION = 92.58 I FLOWLENGTH (FEET) = 157.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 21.00 I PIPEFLOW THRU SUBAREA (CFS) = 14.00 TRAVEL TIME(MIN.) = .31 TC(MIN.) = 11.91 I .013 NUMBER OF PIPES = 1 **************************************************************************** I FLOW PROCESS FRml NODE 210.00 TO NODE 221.00 IS CODE = 1 ---.------------------------------------------------------------------------ >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< 11=========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TII1E OF CONCENTRATION (MIN. ) 11.91 RAINFALL INTENSITY (INCH/HR) = 3.16 I TOTAL STREAM AREA(ACRES) = 13.40 PEAK FLOW RATE (CFS) AT CONFLUENCE = 14.00 I **************************************************************************** I FLOW PROCESS FROM NODE 220.00 TO NODE 221.00 IS CODE = 21 I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< =========================================================================== ASSUMED INITIAL SUBAREA UNIFORM I DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-LENGTH = 260.00 UPSTREAM ELEVATION = 99.10 DOWNSTREAM ELEVATION = 96.50 I ELEVATION DIFFERENCE = 2.60 TC = .323*[( 260.00**3)/( 2.60)]**.2 I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT I SUBAREA RUNOFF (CFS) -- 2.11 7.495 4.077 .8632 /2.7 I 'I TOTAL AREA (ACRES) .60 TOTAL RUNOFF(CFS) = 2.11 **************************************************************************** I FLOW PROCESS FRml NODE 220.00 TO NODE 221.00 IS CODE = 1 ---------------------------------------------------------------------------- I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< I==;~;~=:;:;;:=~;=:;:;::;=:==~============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: I TIME OF CONCENTRATION (MIN. ) 7.50 RAINFAL,L INTENSITY (INCH/HR) = 4.08 TOTAL STREAM AREA (ACRES) = .60 I PEAK FLOW RATE (CFS) AT CONFLUENCE = I I ** CONFLUENCE DATA ** STREAM RUNOFF NlTI~BER (CFS) 1 14.00 2 2.11 Te (MIN. ) 11.91 7.50 2.11 INTENSITY ( INCH/HOUR) 3.161 4.077 AREA (ACRE) 13 .40 .60 I*********************************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSN<ILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. 1************************************************************************** RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO I CONFLUENCE FORMULA USED FOR 2 STREAMS. I I I I ** PEAK FLOW RATE RUNOFF (CFS) 10.92 15.64 STREAM NUMBER 1 2 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = TABLE ** Te (MIN. ) 7.50 11.91 INTENSITY ( INCH/HOUR) 4.077 3.161 AS FOLLOWS: Tc (MIN.) = ESTIMATES ARE -- 15.64 14.00 11.91 1* * * * * *i* * * * * ** * * * * * * * * ok * * * * * ** * * * * * * * * * * ** ** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * FLOW PROCESS FROM NODE 221.00 TO NODE 262.00 IS CODE = 3 It--------------------------------------------------------------------------- /"28 I >>>>>COMPUTE PIPEFLOI'I TRAVELTIME THRU SUBAREA<<<<< .1 >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< =========~================================================================= DEPTH OF FLOW IN 27.0 INCH PIPE IS 17.6 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) 5.7 UPSTREAM NODE ELEVATION = 92.58 I DOWNSTREAM NODE ELEVATION = 92.03 FLOWLENGTH(FEET) = 105.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) 27.00 I PIPEFLOW THRU SUBAREA (CFS) 15.64 TRAVEL TIME(MIN.) = .31 TC(MIN.) = 12.22 I .013 NUMBER OF PIPES 1 **************************************************************************** I FLOW PROCESS FROH NODE 221. 00 TO NODE 262.00 IS CODE = 11 I >>>>>CONFLUENCE MEMORY BANK # 1 WITH THE MAIN-STREAM MEMORY<<<<< =========================================================================== I ** MAIN STREAM CONFLUENCE DATA ** STREAM RUNOFF Te INTENSITY AREA I NUMBER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) 1 15.6<l 12.22 3.117 14.00 I ** MEMORY BANK # 1 CONFLUENCE DATA ** STREAM RUNOFF Tc INTENSITY AREA I NUMBER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) 1 4.42 5.46 4.851 1. 27 I*********************************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ************************************************************************** I I I COMPUTED CONFLUENCE I PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) (INCH/HOUR) 1 11.41 5.46 4.851 2 18.48 12.22 3.117 ESTIMATES ARE -- 18.48 15.27 AS FOLLOWS: Te (MIN.) = 12.22 IZ9 ::".- I 1** * * ** * * * * * * * * * * * * * * * -/I.' * * * * * * * * **** * * * * ** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * FLOW PROCESS FROM NODE 262.00 TO NODE 270.00 IS CODE = 3 II >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< It=~;;;:=~;=;~~:=~:==~:~~=~:~:=;~;;=~;==~;~~=~:~:;;========================== PIPEFLOW VELOCITY(FEET/SEC.) = 7.2 I UPSTREAM NODE ELEVATION = 92.03 DOIVNSTREAM NODE ELEVATION 91.43 I FLOWLENGTH (FEET) = 65.00 MANNING'S N .013 ESTIMATED PIPE DIAMETER (INCH) 24.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 18.48 I TRAVEL TIME(MIN.) = .15 TC(MIN.) = 12.37 11*************************************************************************** FLOW PROCESS FROM NODE 270.00 TO NODE 292.00 IS CODE = 3 1--------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< II >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< =========================================================================== DEPTH OF FLOW IN 24.0 INCH PIPE IS 19.1 INCHES I PIPEFLOW VELOCITY (FEET /SEC.) = 6.9 UPSTREAM NODE ELEVATION = 91.43 I DOWNSTREAM NODE ELEVATION 90.89 FLOWLENGTH(FEET) = 65.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 24.00 II PIPEFLOW THRU SUBAREA (CFS) = 18.48 TRAVEL TIME(MIN.) = .16 TC(MIN.) = 12.52 I .013 NUMBER OF PIPES = 1 **************************************************************************** I FLOW PROCESS FROM NODE 270.00 TO NODE 292.00 IS CODE = 10 --------------------------------------------------------------------------- >>>>>MAIN-STREAM MEMORY COPIED ONTO MEMORY BANK # 2 <<<<< ~=========================================================================== ~******:********************************************************************* FLOW PROCESS FROM NODE 280.00 TO NODE 281.00 IS CODE = 21 ~--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< It=========================================================================== I~O I ASSUMED INITIAL SUBAREA UNIFORM I .DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 150.00 I UPSTREAM ELEVATION = 99.00 DO,VNSTREAM ELEVATION = 98.88 I ELEVATION DIFFERENCE = .12 TC = .323*[( 150.00**3)/( .12)]**.2 = 9.968 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.486 I SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8584 I SUBAREA RUNOFF (CFS) -. . 72 TOTAL AREA(ACRES) = .24 TOTAL RUNOFF (CFS) = .72 11*************************************************************************** I FLOW PROCESS FROM NODE 281.00 TO NODE 291.00 IS CODE = 3 ----------------------.----------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< Il=:::::~~~:~=~~::~~~::~~~~~~~~=:~:~~~~~=~:~::::~~~~~=:~~:~:::::=========== I I I I DEPTH OF FLOW IN 6.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) = 4.7 UPSTREAM NODE ELEVATION = 97.30 DOIVNSTREAM NODE ELEVATION = 92.50 FLOWLENGTH(FEET) = 190.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) 6.00 PIPEFLOW THRU SUBAREA (CFS) = .72 TRAVEL TIME(MIN.) = .67 TC(MIN.) = 4.3 INCHES .013 NUMBER OF PIPES 1 10.64 ****'k*********************************************************************** I FLOW PROCESS FROM NODE 281.00 TO NODE 291.00 IS CODE = 1 ----------------------------------------------------------------------------- I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< =========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 10.64 I RAINFALL INTENSITY (INCH/HR) = 3.36 TOTAL STREAM AREA(ACRES) = .24 PEAK FLOW RATE (CFS) AT CONFLUENCE = .72 I 1* * *. * *'* * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * ** 13\ I FLOW PROCESS FRml NODE 290.00 TO NODE 291.00 IS CODE = 21 ~I- - - -- - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< I===="====:;;;:;~=~:~;~~~=;~;:;;~=~~;~;:==================================== DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 130.00 UPSTREAM ELEVATION = 97.20 I DOWNSTREAM ELEVATION = 95.10 ELEVATION DIFFERENCE = 2.10 I TC = .323*[( 130.00**3)/( 2.10)]**.2 5.161 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 5.006 SOIL CLASSIFICATION IS "B" I I APARTMENT DEVELOPMENT SUBAREA RUNOFF (CFS) -- TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = 1. 57 .36 .8688 TOTAL RUNOFF(CFS) 1. 57 11*************************************************************************** FLOW PROCESS FRml NODE 290.00 TO NODE 291.00 IS CODE = 1 II-:::::~~~~~~~;~-~~~~~~~~~~;-~;~~~-;~~-~~~;~~~~~~:::::--------------------- >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< It=========================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TH1E OF CONCENTRATION (MIN.) = 5.16 RAINFALL INTENSITY (INCH/HR) = 5.01 I TOTAL STREAM AREA (ACRES) = . 36 PEAK FLOW RATE (CFS) AT CONFLUENCE = I I I 1. 57 ** CONFLUENCE DATA ** STREAM RUNOFF N1TI~BER (CFS) 1 .72 2 1. 57 Te INTENSITY ( INCH/HOUR) 3.364 5.006 AREA (ACRE) .24 .36 (MIN. ) 10.64 5.16 *********************************WARNING********************************** I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. I***~~********************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO 1~2. I I I I COMPUTED CONFLUENCE I PEAK FL01" RATE (CFS) TOTAL AREA (ACRES) = I CONFLUENCE FORMULA USED FOR 2 STREAMS. ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Te INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 1.91 5.16 5.006 2 1.. 77 10.64 3.364 ESTIMATES ARE ::: 1.91 .60 AS FOLLOWS: Te (MIN.) = 5.16 **************************************************************************** I FLOW PROCESS FRml NODE 291.. 00 TO NODE 292.00 IS CODE = 3 I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ----------------------------------------------------------------------------- ---------------------------------------------------------------------------- I DEPTH OF FLOW IN 9.0 INCH PIPE IS 5.1 INCHES PIPEFLGW VELOCITY(FEET/SEC.) = 7.5 I UPSTREAM NODE ELEVATION = 92.50 DOI-<NSTREAM NODE ELEVATION 90.89 FLOWLENGTH(FEET) = 38.00 MANNING'S N .013 I ESTIMATED PIPE DIAMETER (INCH) 9.00 NUMBER OF PIPES 1 PIPEFLOW THRU SUBAREA (CFS) 1. 91 I TRAVEL TIME(MIN.) = .08 TC (MIN. ) = 5.25 1*************************************************************************** FLOW PROCESS FROM NODE 291. 00 TO NODE 292.00 IS CODE = 11 If-:::::~~~;~~~~~~-~~~~~~-~~~-;-~-~~~~-~~~-~~~~~~~~~-~~~~~~:::::---------- ----------------------------------------------------------------------------- ---------------------------------------------------------------------------- I ** MAIN STREAM CONFLUENCE DATA ** I STREAM RUNOFF Tc INTENSITY AREA NUMBER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) 1 1.91 5.25 4.961 .60 I ** MEMORY BANK # 2 CONFLUENCE DATA ** STREAM RUNOFF Te INTENSITY AREA I NUMBER (CFS) (MIN. ) (INCH/HOUR) (ACRE) 1 18.48 12.52 3.075 15.27 I 103 _u ---.- I *********************************WARNING********************************** 'I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WII,L NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. I ************************************************************************** I ** PEAK I I I STREAM NUMBER 1 2 FLOW RATE RUNOFF (CFS) 9.65 19.66 TABLE ** Te (MIN. ) 5.25 12.52 INTENSITY ( INCH/HOUR) 4.961 3.075 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE = 19.66 15.87 AS FOLLOWS: Tc (MIN.) = 12.52 Il***'k*********************************************************************** FLOW PROCESS FROM NODE 292.00 TO NODE 302.00 IS CODE = 3 ~--------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< ;;;~~====================================================================== DEPTH OF FLOW IN 27.0 INCH PIPE IS 17.7 INCHES I PIPEFLOW VELOCITY (FEET/SEC.) = 7.1 UPSTREAM NODE ELEVATION = 90.89 I DOWNSTREAM NODE ELEV1,TION = 90.16 FLOWLENGTH(FEET) = 90.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER (INCH) 27.00 NUMBER OF PIPES 1 I PIPEFLOW THRU SUBAREA(CFS) = 19.66 TRAVEL TIME(MIN.) = .21 TC(MIN.) = 12.73 I *******:********************************************************************* I__~~~~-~~~~~~~-~~~~-~~~~---~:~~~~-~~-~~~~---~~~~~~-~~_~~~~_:___~____________ I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< =====================;===================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) 12.73 I RAINFALL INTENSITY (INCH/HR) = 3.05 TOTAL STREAM AREA(ACRES) = 15.87 PEAK FLOW RATE(CFS) AT CONFLUENCE = I 19.66 134 .1 ~I'* * ** *:* * * * 'k * * * * * * * ~r * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * . FLOW PROCESS FROM NODE 300.00 TO NODE 301.00 IS CODE = 21 ---------------------------------------------- i il >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ;;;========================================================================= 'I ,I I I I I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITI~, SUBAREA FLOW--LENGTH = 70.00 UPSTREAM ELEVATION = 97.60 DOWNSTREAM ELEVATION = 95.00 ELEVATION DIFFERENCE = 2.60 TC = .323*[( 70.00**3)/( 2.60)]**.2 = 3.411 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8693 SUBAREA RUNOFF(CFS) - 1.46 TOTAL AREA(ACRES) = .33 TOTAL RUNOFF(CFS) 1. 46 ~*****~********************************************************************* FLOW PROCESS FROM NODE 301.00 TO NODE 302.00 IS CODE = 3 1--------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< =========================================================================== DEPTH OF FLOW IN 9.0 INCH PIPE IS 5.0 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) 5.9 UPSTREAM NODE ELEVATION = 92.71 I DOWNSTREAM NODE ELEVATION 90.16 FLOWLENGTH(FEET) = 95.00 MANNING'S N ESTIMATED PIPE DIAMETER(INCH) 9.00 I PIPEFLOW THRU SUBAREA(CFS) = 1.46 TRAVEL TIME(MIN.) = .27 TC(MIN.) I .013 NUMBER OF PIPES = 1 5.27 **************************************************************************** I FLOW PROCESS FROM NODE 301.00 TO NODE 302.00 IS CODE = 1 --------------------------------------------------------------------------- I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< ============================================================================ I TOTAL NU'"MBER OF STREAMS = 2 las I I I I I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM TIME OF CONCENTRATION(MIN.) 5.27 RAINFALL INTENSITY (INCH/HR) = 4.95 TOTAL STREAM AREA (ACRES) = .33 PEAK FLOW RATE (CFS) AT CONFLUENCE = 1.46 ** CONFLUENCE DATA H STREAM RUNOFF NUMBER (CFS) 1 19.66 2 1.46 Te (MIN. ) 12.73 5.27 2 ARE: INTENSITY ( INCH/HOUR) 3.047 4.948 AREA (ACRE) 15.87 .33 1* * * * * *,* * * * * * * * * * * * * * * * * * * * * * * * * * *WARNING* * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-l AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. 1******'******************************************************************** RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO I CONFLUENCE FORMULA USED FOR 2 STREAMS. I I I I ** PEAK FLOW RATE RUNOFF (CFS) 9.60 STREAM NUl,mER 1 2 20.56 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = TABLE ** Te (MIN. ) 5.27 12.73 INTENSITY ( INCH/HOUR) 4.948 3.047 ESTIMATES ARE -- 20.56 16.20 AS FOLLOWS: Te (MIN.) = 12.73 11*************************************************************************** FLOW PROCESS FROM NODE 302.00 TO NODE 317.00 IS CODE = 3 11--------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< =========================================================================== DEPTH OF FLOW IN 27.0 INCH PIPE IS 17.8 INCHES I PIPEFLOW VELOCITY (FEET/SEC.) 7.4 UPSTREAM NODE ELEVATION = 90.16 D01~STREAM NODE ELEVATION 89.11 I FLOWLENGTH (FEET) = 120.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 27.00 I PIPEFLOW THRU SUBAREA (CFS) = 20.56 .013 NUMBER OF PIPES 1 13(; I I. TRAVEL'TIME(MIN.) = .27 TC(MIN.) = 13.00 *******1********************************************************************* I FLOW PROCESS FROM NODE 302.00 TO NODE 317.00 IS CODE = 10 I >>>>>MAIN-STREAM MEMORY COPIED ONTO MEMORY BANK # 3 <<<<< ======:===================================================================== I *******:********************************************************************* I FLOW PROCESS FROM NODE 310.00 TO NODE 311.00 IS CODE = 21 -----_._-------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< 11=========================================================================== ASSUMED INITIAL SUBAREA UNIFORM I DEVELOPMENT IS APARTMENT TC = K* [ (LENGTH*"3) / (ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 245.00 I UPSTREAM ELEVATION = 98.10 DOWNSTREAM ELEVATION = 95.10 I ELEVATION DIFFERENCE = 3.00 TC = .323*[( 245.00**3)/( 3.00)]**.2 = 7.029 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 4.224 I SOIL CLASSIFICATION IS liB" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8642 I SUBAREA RUNOFF (CFS) -- 1. 86 TOTAL AREA(ACRES) = .51 TOTAL RUNOFF(CFS) = 1.86 1(*************************************************************************** I FLOW PROCESS FROM NODE 311.00 TO NODE 312.00 IS CODE = 9 --------------------------------------------------------------------------- >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< It=========================================================================== UPSTREAM NODE ELEVATION = 95.10 DOWNSTREAM NODE ELEVATION = 94.30 I CHANNEL LENGTH THRU SUBAREA (FEET) = 110.00 "V" GUTTER WIDTH(FEET) = 4.00 GUTTER HIKE (FEET) I PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 PAVEMENT CROSSFALL(DEClMAL NOTATION) = .03000 MAXIMUM DEPTH (FEET) =, 1. 00 I 100 YEAl~ RAINFALL INTENSITY (INCH/HOUR) SOIL CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8522 .100 2.897 107 I TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) = 'I AVERAGE FLOWDEPTH(FEET) = .55 FLOODWIDTH(FEET) "V" GUTTER FLOW TRAVEL TIME(MIN) = 6.93 TC(MIN) I SUBAREA AREA (ACRES) ~~ .14 SUBAREA RUNOFF (CFS) SUMMED AREA(ACRES) = .65 TOTAL RUNOFF(CFS) END OF SUBAREA "11" GUTTER HYDRAULICS: I DEPTH(FEET) = .56 FLOODWIDTH (FEET) = 32.51 FLOW VELOCITY(FEET/SEC.) = .27 DEPTH*VELOCITY I .26 31. 61 13.96 .35 2.21 .15 **************************************************************************** I FLOW PROCESS FROM NODE 311.00 TO NODE 312.00 IS CODE = 1 ---------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< IJ===.======================================================================== TOTAL NUMBER OF STREAMS = 2 I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: TIME OF CONCENTRATION(MIN.) = 13.96 RAINFALL INTENSITY (INCH/HR) = 2.90 I TOTAL STREAM AREA(ACRES) = .65 PEAK FLOW RATE (CFS) AT CONFLUENCE = 2.21 I I FLOW PROCESS FROM NODE 313.00 TO NODE **************************************************************************** 314.00 IS CODE = 21 I >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< =========================================================================== ASSUMED INITIAL SUBAREA UNIFORM I DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-LENGTH = 130.00 UPSTREAM ELEVATION = 99.00 DOWNSTREAM ELEVATION = 95.23 I ELEVATION DIFFERENCE = 3.77 TC = .323*[( 130.00**3)/( 3.77)]**.2 = 4.591 I COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 SOIL CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8693 SUBAREA RUNOFF(CFS) 1.28 I TOTAL AREA(ACRES) = .29 TOTAL RUNOFF(CFS) = 1. 28 It*************************************************************************** 138 II I FLOW PROCESS FROM NODE 314.00 TO NODE 312.00 IS CODE = 9 " '1- - -.- - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - I >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< I==~;;;:;;;=:~~;=;~;;~;~~:=:=====:;~~;======================================= DOWNSTREAM NODE ELEVATION = 94.30 I CHANNEL LENGTH THRU SUBAREA (FEET) = 285 . 00 "V" GUTTER WIDTH(FEET) = 4.00 GUTTER HIKE (FEET) PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 I PAVEMENT CROSSFALL(DECIMAL NOTATION) = .03000 ~XIMUM DEPTH(FEET) = 1.00 I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 1.883 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8357 I TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) = AVERAGE FLOWDEPTH(FEET) = .59 FLOODWIDTH(FEET) = I "V" GUTTER FLOW TRAVEL TIME (MIN) = 25.58 TC (MIN) SUBAREA AREA (ACRES) = .48 SUBAREA RUNOFF(CFS) SmQMED AREA(ACRES) = .77 TOTAL RUNOFF (CFS) I END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .63 FLOODWIDTH(FEET) 37.04 I FLOW VELOCITY (FEET/SEC.) = .19 DEPTH*VELOCITY .100 .19 34.32 30.58 .76 2.04 .12 11*************************************************************************** FLOW PROCESS FROM NODE 314.00 TO NODE 312.00 IS CODE = 1 II-::;:::~~~~~~~~~-~~~~~~~~~~~-~~;~~-;~;-~~~;~~~~~~:::::--------------------- >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< It=;~;~=:;:;;:=~;=;;:;;;;=:==~============================================== I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 30.58 RAINFALL INTENSITY (INCH/HR) = 1.88 I TOTAL STREAM AREA (ACRES) = . 77 PEAK FLOW RATE(CFS) AT CONFLUENCE = I I I 2.04 ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 2.21 2 2.04 INTENSITY ( INCH/HOUR) 2.897 1.883 AREA (ACRE) .65 .77 Te (MIN. ) 13.96 30.58 * **'Ie * *:* * * * * * * * * * * * * * * * * * * * * * * * * **WARNING* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED 13., I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA 'I WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ************************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I I I I I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Tc INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 3.1'1 13.96 2.897 2 3.47 30.58 1. 883 COMPUTED CONFLUENCE PEAK FLOW RATE(CFS) TOTAL AREA (ACRES) = ESTIMATES ARE -- 3.14 1.42 AS FOLLOWS: Tc (MIN.) = 13.96 **************************************************************************** I FLOW PROCESS FRm1 NODE 315.00 TO NODE 312.00 IS CODE = 8 I >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ;;========================================================================= 100 YEA."- RAINFALL INTENSITY (INCH/HOUR) = 2.897 I SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8522 I SUBAREA AREA (ACRES) -- .03 SUBAREA RUNOFF (CFS) TOTAL AREA (ACRES) 1.45 TOTAL RUNOFF (CFS) = TC (MIN) = 13 . 96 I .07 3.21 1*************************************************************************** FLOW PROCESS FROM NODE 316.00 TO NODE 312.00 IS CODE = 8 I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = SOIL CLASSIFICATION IS "B" I I APARTMENT DEVELOPMENT SUBAREA AREA (ACRES) = TOTAL AREA (ACRES) = TC (MIN) = 13 . 96 RUNOFF COEFFICIENT = .8522 .14 SUBAREA RUNOFF(CFS) = 1.59 TOTAL RUNOFF (CFS) = .35 3.56 It*************************************************************************** 140 FLOW PROCESS FROM NODE 312.00 TO NODE 317.00 IS CODE = 3 '1- - -- - -- - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ~=========================================================================== DEPTH OF FLOW IN 12.0 INCH PIPE IS 5.8 INCHES PIPEFLOW VELOCITY(FEET/SEC.) 9.6 UPSTREAM NODE ELEVATION = 90.30 DOWNSTREAM NODE ELEVATION = 89.11 FLOWLENGTH(FEET) = 22.00 MANNING'S N ESTIMATED PIPE DIAMETER (INCH) = 12.00 PIPEFLOW THRU SUBAREA (CFS) = 3.56 TRAVEL TIME(MIN.) = .04 TC(MIN.) I I I I *******.********************************************************************* Il-~~~~-~~~~~~~-~~~~-~~~~---~~~~~~-~~-~~~~---~~~~~~-~~-~~~~_:_-~~------------ >>>>>CONFLUENCE MEMORY BANK # 3 WITH THE MAIN-STREAM MEMORY<<<<< ~======-==================================================================== I ** MAIN I I II I STREAM NUMBER 1 STREAM CONFLUENCE DATA ** RUNOFF Te INTENSITY (CFS) (MIN.) (INCH/HOUR) 3.56 14.00 2.893 * * MEMORY STREAM NUMBER 1 BANK # RUNOFF (CFS) 20.56 3 CONFLUENCE DATA ** Te INTENSITY (MIN. ) (INCH/HOUR) 13.00 3.012 = .013 NUMBER OF PIPES = 1 14.00 AREA (ACRE) 1. 59 AREA (ACRE) 16.20 II ** * * * *.* * ** * * * * * * * * * * * * * * * * * * * * ** *WARNING* * * * *** * * * * * * * * * * * * * * * * * * * ** * * * * * * IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA II WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ******,******************************************************************** II I I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: I PEAK FLOW RATE (CFS) 23.87 Tc(MIN.) = ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Te INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 23.87 13.00 3.012 2 23.31 14.00 2.893 13.00 14-1 I 'I TOTAL AREA (ACRES) = 17.79 **************************************************************************** I FLOW PROCESS FROM NODE 317.00 TO NODE 321.00 IS CODE = 3 I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< 1_=========================================================================== DEPTH OF FLOW IN 27.0 INCH PIPE IS 21.0 INCHES PIPEFLOW VELOCITY(FEET/SEC.) I UPSTREAM NODE ELEVATION = DOWNSTREAM NODE ELEVATION = FLOWLENGTH(FEET) = 45.00 I ESTIMATED PIPE DIAMETER (INCH) PIPEFLOW THRU SUBAREA (CFS) I TRAVEL TIME (MIN.) = .10 == 7.2 89.11 88.76 MANNING'S N 27.00 23.87 TC(MIN.) = = .013 NUMBER OF PIPES = 1 13.11 1J***'k*********************************************************************** FLOW PROCESS FROM NODE 317.00 TO NODE 321.00 IS CODE = 1 1----------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< ----------------------------------------------------------------------------- ---------------------------------------------------------------------------- I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME OF CONCENTRATION (MIN.) = 13 .11 RAINFALL INTENSITY (INCH/HR) = 3.00 TOTAL STREAM AREA(ACRES) = 17.79 I PEAK FLOW RATE (CFS) AT CONFLUENCE = 23.87 IJ******,********************************************************************* FLOW PROCESS FROM NODE 320.00 TO NODE 321.00 IS CODE = 21 IJ---------------------------------------------------------------------------- >>>>>'RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< I========~;;;:;~=~:~;~::=;~:;;;~=~~;~;:==================================== DEVELOPMENT IS APARTMENT I TC = K* [ (LENGTH**3) / (ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 440.00 I UPSTREAM ELEVATION = 100.00 DOWNSTRE,AM ELEVATION = 96 .10 ELEVATION DIFFERENCE = 3.90 I TC = .323*[( 440.00**3)/( 3.90)]**.2 9.477 14-2. I 1'1 I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.584 SOIL C:GASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8593 SUBAREA RUNOFF(CFS) - 1.66 TOTAL AREA (ACRES) = .54 TOTAL RUNOFF(CFS) 1. 66 IL*************************************************************************** FLOW PROCESS FROM NODE 320.00 TO NODE 321.00 IS CODE = 1 1- - -- - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< =========================================================================== I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 9.48 I RAINFALL INTENSITY (INCH/HR) = 3.58 TOTAL STREAM AREA (ACRES) = .54 PEAK FLOW RATE (CFS) 1,T CONFLUENCE = 1. 66 I ** CONFLUENCE DATA *', I STREAM RUNOFF Te INTENSITY AREA NUMBER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) 1 23.87 13 .11 2.999 17.79 I 2 1. 66 9.48 3.584 .54 1***'k*****************************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA I WILL NOT NECESSMtILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ***'k********************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I I I I I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Te INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 18.92 9.48 3.584 2 25.26 13 .11 2.999 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE -- 25.26 18.33 AS FOLLOWS: Tc (MIN.) = 13 .11 14-~ I 11*************************************************************************** FLOW PROCESS FROM NODE 321.00 TO NODE 322.00 IS CODE = 3 If-:::::~~~~~;~-~~~~;~~~;-;~~~~;~~~-;~~~-~~~~~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< It=~;;;:=~;=;~~:=~:==~~~~=~:~:=;~;;=~;==~:~;=~:~:;;========================== I PIPEFLOW VELOCITY(FEET/SEC.) = 8.2 UPSTREAM NODE ELEVATION = 88.76 DOWNSTREAM NODE ELEVATION 88.30 I FLOWLENGTH(FEET) = 44.51 MANNING'S N = .013 ESTIMATED PIPE DIAMETER (INCH) 27.00 NUMBER OF PIPES = 1 I PIPEFLOW THRU SUBARE1, (CFS) = 25.26 TRAVEL TIME(MIN.) = .09 TC(MIN.) = 13.20 11*************************************************************************** FLOW PROCESS FROM NODE 330.00 TO NODE 331.00 IS CODE = 21 11--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< It========~;;;:;~=~:~;~~~=;~;:;;:=~~;~::==================================== DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 120.00 II UPSTREAM ELEVATION = 103.30 DOWNSTREAM ELEVATION = 102.10 ELEVATION DIFFERENCE = 1.20 I TC = . 323 * [ ( 12 0 . 00 * * 3) / ( 1. 20) ] ** .2 5 . 501 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 4.833 II SOIL CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT SUBAREA RUNOFF (CFS) TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = .63 .15 .8679 TOTAL RUNOFF(CFS) = .63 ~******'********************************************************************* FLOW PROCESS FROM NODE 331.00 TO NODE 332.00 IS CODE = 9 ~--------------------------------------------------------------------------- >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< r-=========================================================================== UPSTREAM NODE ELEVATION = 102.10 DOWNSTREAM NODE ELEVATION = 100.00 I CHANNEL LENGTH THRU SUBAREA (FEET) = 165.00 144- I "V" GUTTER WIDTH(FEET) = 4.00 GUTTER HIKE (FEET) = 'I PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 PAVEMENT CROSSFALL(DECIMAL NOTATION) = .03000 MAXIMUM DEPTH(FEET) = 1.00 I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) 2.739 SOIL CLASSIFICATION IS "B" I APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8502 TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) I AVERAGE FLOWDEPTH(FEET) = .40 FLOODWIDTH(FEET) = "V" GUTTER FLOW TRAVEL TIME(MIN) = 9.96 TC(MIN) SUBAREA AREA (ACRES) -- .33 SUBAREA RUNOFF (CFS) I SUMMED AREA (ACRES) = . 48 TOTAL RUNOFF (CFS) = END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .44 FLOODWIDTH(FEET) = 24.37 I FLOW VELOCITY (FEET/SEC.) = .30 DEPTH*VELOCITY = .100 .28 21. 65 15.46 .77 1. 40 .13 Il***'k*********************************************************************** FLOW PROCESS FROM NODE 331.00 TO NODE 332.00 IS CODE = 1 ~--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< Ir=;~;:~=:;:;;;=~;=;;;;;;;=:==~============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME OF CONCENTRATION (MIN.) 15.46 RAINFALL INTENSITY (INCH/HR) = 2.74 I TOTAL STREAM ARE1,(ACRES) = .48 PEAK FLOW RATE (CFS) AT CONFLUENCE = 1.40 Il*************************************************************************** II-~~~~-~~~~~~~-~~~~-~~~~---~~~~~~-~~-~~~~---~~~~~~-~~-~~~~-:--~~------------ >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< It=========================================================================== ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 240.00 I UPSTREAM ELEVATION = 103.30 DOWNSTREAM ELEVATION = 100.00 ELEVATION DIFFERENCE = 3.30 I TC = .323*[( 240.00**3)/( 3.30)]**.2 100 YEAR RAINFALL INTENSITY (INCH/HOUR) I SOIL CLASSIFICATION IS "B" 6.811 4.298 145 I APARTMENT DEVELOPMENT 'I SUBAREA .RUNOFF (CFS) -- TOTAL AREA (ACRES) = I RUNOFF COEFFICIENT = .8647 1. 71 .46 TOTAL RUNOFF(CFS) = 1. 71 ****'k*********************************************************************** I FLOW PROCESS FROM NODE 333.00 TO NODE 332.00 IS CODE = 1 --------------------------------------------------------------------------- I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) = 6.81 I RAINFALL INTENSITY (INCH/HR) = 4.30 TOTAL STREAM ARE}. (ACRES) = .46 I PEAK FLOW RATE (CFS) AT CONFLUENCE = 1. 71 ** CONFLUENCE DATA *', I STREAM RUNOFF Tc INTENSITY AREA NUMBER (CFS) (MIN. ) ( INCH/HOUR) (ACRE) I 1 1. 40 15.46 2.739 .48 2 1. 71 6.81 4.298 .46 I*********************************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ***.t********************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO I CONFLUENCE FORMULA USED FOR 2 STREAMS. I I I I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Te INTENSITY NUMBER (CFS) (MIN. ) ( INCH/HOUR) 1 2.33 6.81 4.298 2 2.49 15.46 2.739 COMPUTED CONFLUENCE PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = ESTIMATES ARE = 2.33 .94 AS FOLLOWS: Te (MIN.) = 6.81 ~*************************************************************************** It\b u FLOW PROCESS FROM NODE 332.00 TO NODE 334.00 IS CODE = 9 I '1- - -.- - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - >>>>>COMPUTE "V" GUTTER FLOW TRAVELTIME THRU SUBAREA<<<<< Ir=~;;;;;::=:~~;=;~;~~;;~:=:====~~~~~~======================================= DOWNSTREAM NODE ELEVATION = 98.70 I CHANNEL LENGTH THRU SUBAREA (FEET) = 130.00 "V" GUTTER WIDTH(FEET) = 4.00 GUTTER HIKE (FEET) = PAVEMENT LIP (FEET) = .031 MANNING'S N = .2000 I PAVEMENT CROSS FALL (DECIMAL NOTATION) = .03000 MAXIMUM DEPTH (FEET)~' 1.00 I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 2.908 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8523 I TRAVELTIME THRU SUBAREA BASED ON VELOCITY(FEET/SEC) = AVERAGE FLOWDEPTH(FEET) = .56 FLOODWIDTH(FEET) I "V" GUTTER FLOW TRAVEL TIME (MIN) 7.05 TC (MIN) = SUBAREA AREA (ACRES)~, .14 SUBAREA RUNOFF (CFS) SUMMED AREA(ACRES) = 1.08 TOTAL RUNOFF(CFS) = I END OF SUBAREA "V" GUTTER HYDRAULICS: DEPTH (FEET) = .57 FLOODWIDTH(FEET) 33.42 I FLOW VELOCITY (FEET/SEC. ) = .31 DEPTH*VELOCITY = .100 .31 32.51 13.86 .35 2.67 .18 11*************************************************************************** FLOW PROCESS FROM NODE 334.00 TO NODE 335.00 IS CODE = 3 II-:::::~~~~~;~-~~~~;~~~-;~~~~;~~~-;~;~-~~~~;~~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ~=========================================================================== DEPTH OF FLOW IN 12.0 INCH PIPE IS 6.7 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) 5.9 UPSTREAM NODE ELEVATION = 94.26 DOWNSTRE.AM NODE ELEV1,TION = 91.75 I FLOWLENGTH(FEET) = 135.00 MANNING'S N .013 ESTIMATED PIPE DIAMETER (INCH) 12.00 NUMBER OF PIPES = 1 I PIPEFLOW THRU SUBAREA (CFS) 2.67 TRAVEL TIME(MIN.) = .38 TC(MIN.) 14.24 ~*************************************************************************** FLOW PROCESS FROM NODE 340.00 TO NODE 341.00 IS CODE = 21 11--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< It=========================================================================== 11\.1 . II I I I I I ASSUMED INITIAL SUBAREA UNIFORM .DEVELOPMENT IS APARTMENT TC = K*[(LENGTH*"3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 85.00 UPSTREAM ELEVATION = 102.00 DO.VNSTREAM ELEVATION = 101.10 ELEVATION DIFFERENCE = .90 TC = .323*[( 85.00**3)/( .90)]**.2 = 4.738 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = .8693 SUBAREA RUNOFF(CFS) -. .71 TOTAL AREA(ACRES) = .16 TOTAL RUNOFF (CFS) .71 1*************************************************************************** FLOW PROCESS FROH NODE 341.00 TO NODE 351.00 IS CODE = 3 I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< Ir=~;;;:=~;=;~~:=~:===:~~=;:~:=:;:;=~;===;~:=~:~:;;========================== PIPEFLOW VELOCITY(FEET/SEC.) 4.2 I UPSTREAM NODE ELEVATION = 99.11 DOWNSTREAM NODE ELEVATION 96.75 I FLOWLENGTH (FEET) = 130.00 MANNING'S N .013 ESTI~~TED PIPE DIAMETER (INCH) = 9.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA (CFS) = .71 I TRAVEL TIME(MIN.) = .51 TC(MIN.) = 5.51 Il*************************************************************************** FLOW PROCESS FROH NODE 341.00 TO NODE 351.00 IS CODE = 1 It----------------------.----------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< Ir=;~;:~=:;::;:=~;=;,;:;::;=:==~============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIME OF CONCENTRATION(MIN.) = 5.51 RAINFALL INTENSITY (INCH/HR) = 4.83 TOTAL STREAM AREA(ACRES) = .16 I PEAK FLOW RATE (CFS) AT CONFLUENCE = . 71 I 148 I 1- - **************************************************************************** .. '1- _ ~~~~ _ ~~~'=~:: _ ~~~~ _ ~~~~ _ _ _ = = ~ ~ ~ ~ _ =~ _ ~~~~ _ _ _ = = ~ ~ ~ ~ _ ~: _ ~~~~ _ : _ _ ~ ~ _ _ _ _ _ _ _ _ _ _ __ . >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ~=========================================================================== ASSUMED INITIAL SUBAREA UNIFORM I DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 I INITIAL SUBAREA FLOW-.LENGTH = 290.00 UPSTREAM ELEVATION = 103.40 DOWNSTREAM ELEVATION = 100.10 I ELEVATION DIFFERENCE = 3.30 TC = .323*[( 290.00**3)/( 3.30)]**.2 = 7.630 I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 4.038 SOIL CLASSIFICATION IS "B" I I APARTMENT DEVELOPMENT SUBAREA RUNOFF (CFS) = TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = 1. 78 .51 .8629 TOTAL RUNOFF(CFS) 1. 78 **************************************************************************** I FLOW PROCESS FRml NODE 350.00 TO NODE 351.00 IS CODE = 1 --------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I I I I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) 7.63 RAINFALL INTENSITY (INCH/HR) = 4.04 TOTAL STREAM AREldACRES) = .51 PEAK FLOW RATE (CFS) 1',T CONFLUENCE = STREAM 2 ARE: 1. 78 * * CONFLUENCE DATA ... STREAM NUl~BER 1 2 RUNOFF (CFS) .71 1. 7B Te INTENSITY ( INCH/HOUR) 4.827 4.038 AREA (ACRE) .16 .51 (MIN. ) 5.51 7.63 1***~k*****************************WARNING********************************** IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED I ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA wn,L NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ************************************************************************** I 14'1 I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO 'I CONFLUENCE FORMULA USED FOR 2 STREAMS. I I I I ** PEAK FLOW RATE RUNOFF (CFS) 1. 99 2.37 TABLE ** STREAM NUJ<ljBER 1 2 Te (MIN. ) 5.51 7.63 INTENSITY ( INCH/HOUR) 4.827 4.038 COMPUTED CONFLUENCE PEAK FLOW RATE(CFS) TOTAL AREA (ACRES) = ESTIMATES ARE -- 2.37 .67 AS FOLLOWS: Tc (MIN.) = 7.63 It*************************************************************************** FLOW PROCESS FROM NODE 351.00 TO NODE 352.00 IS CODE = 3 II-:::::~~~~~;~-~~~~;~~;,-;~~~~;~~~-;~;~-~~~~~~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< ~=========================================================================== DEPTH OF FLOW IN 12.0 INCH PIPE IS 6.0 INCHES I PIPEFLOW VELOCITY(FEET/SEC.) 6.0 UPSTREAM NODE ELEVATION = 96.75 Drn~STREAM NODE ELEVATION = 94.60 I FLOWLENGTH(FEET) = 103.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER (INCH) = 12.00 NUMBER OF PIPES = 1 I PIPEFLOW THRU SUBAREA (CFS) 2.37 TRAVEL TIME(MIN.) = .28 TC(MIN.) = 7.91 Il*************************************************************************** Il-~~~~-~~~~~~~-~~~~-~~~~---~~~~~~-~~-~~~~---~~~~~~-~~-~~~~-:--~~------------ >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< It=========================================================================== ASSUMED INITI1_L SUBAREA UNIFORM DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 90.00 I UPSTREAM ELEVATION = 106.00 DOWNSTREAM ELEVATION = 104.80 ELEVATION DIFFERENCE = 1.20 I TC = .323*[( 90.00**3)/( 1.20)]**.2 = 4.629 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.093 150 I 'I APARTMENT DEVELOPMENT SUBAREA RUNOFF(CFS) = I TOTAL AREA (ACRES) = SOIL CLASSIFICATION IS "B" RUNOFF COEFFICIENT = .8693 .62 .14 TOTAL RUNOFF(CFS) .62 1*************************************************************************** FLOW PROCESS FROH NODE 361.00 TO NODE 371.00 IS CODE = 3 If-:::::~~~~~;~-~~~~;~~~-;~~~;~~~-;~~~-~~~~~~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< It=~;;;:=~;=;~~:=~:===:~~=~:~:=;~;;=~;===:~~=~:~:;;========================== I PIPEFLOW VELOCITY(FEET/SEC.) = 4.2 UPSTREAM NODE ELEVATION = 103.10 DO\~STREAM NODE ELEVATION = 101.30 I FLOWLENGTH (FEET) = 90.00 MANNING'S N = .013 ESTIMATED PIPE DIAMETER (INCH) 6.00 NUMBER OF PIPES 1 PIPEFLOW THRU SUBAREA (CFS) .62 I TRAVELTIME(MIN.) = .36 TC(MIN.) = 5.36 11*************************************************************************** FLOW PROCESS FROM NODE 361. 00 TO NODE 371.00 IS CODE = 1 ~--------------------------------------------------------------------------- >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< Ir=;~;:~=:;:;;:=~;=;;:;::;=:==~============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: I TIl1E OF CONCENTRATION (MIN.) 5.36 RAINFALL INTENSITY (INCH/HR) = 4.90 I TOTAL STREAM AREl, (ACRES) = .14 PEAK FLOW RATE (CFS) AT CONFLUENCE = .62 Il*************************************************************************** IJ-~~~~-~~~~~~~-~~~~-~~~)~---~:~~~~-~~-~~~~---~:~~~~-~~-~~~~-:--~~------------ >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< It=========================================================================== ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-.LENGTH = 30.00 I UPSTREAM ELEVATION = 106.00 15\ I I>,. , I. . I DOWNSTREAM ELEVATION = 104.60 ELEVATION DIFFERENCE = 1.40 TC = .323*[( 30.00**3)/( 1.40)]**.2 = 2.322 COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN. 100 YE~~ RAINFALL INTENSITY (INCH/HOUR) = 5.093 SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT SUBAREA RUNOFF(CFS) TOTAL AREA (ACRES) = RUNOFF COEFFICIENT = .8693 .22 .05 TOTAL RUNOFF(CFS) .22 1*************************************************************************** FLOW PROCESS FROM NODE 370.00 TO NODE 371.00 IS CODE = 1 I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< It=;~;~=:;::;;=~;=;,;;;;;;=:==~============================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: I TIME OF CONCENTRATION (MIN.) = 5.00 RAINFALL INTENSITY (INCH/HR) = 5.09 I TOTAL STREAM ARE1\. (ACRES) = .05 PEAK FLOW RATE (CFS) AT CONFLUENCE = I I .22 ** CONFLUENCE DATA *', STREAM RUNOFF Te INTENSITY AREA NUMBER (CFS) (MIN.) (INCH/HOUR) (ACRE) 1 .62 5.36 4.903 .14 2 .22 5.00 5.093 .05 I *********************************WARNING********************************** I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA WILL NOT NECESSN<ILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. I ************************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I ** PEAK FLOW RATE TABLE ** STREAM RUNOFF Te INTENSITY I NUMBER (CFS) (MIN.) (INCH/HOUR) 1 .80 5.00 5.093 2 .83 5.36 4.903 I llO'2.. -- ~- --,- I COMPUTED CONFLUENCE 'I PEAK FLOW RATE (CFS) TOTAL AREA (ACRES) = I ESTIMATES ARE -- .83 .19 AS FOLLOWS: Te (MIN.) = 5.36 **************************************************************************** I I FLOW PROCESS FROM NODE 371. 00 TO NODE 381. 00 IS CODE = 3 --------------------------------------------------------------------------- >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< ----.------------------------------------------------------------------------ ---------------------------------------------------------------------------- I DEPTH OF FLOW IN 9.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) = 4.7 UPSTREAM NODE ELEVATION = 101.30 I DO\~NSTREAM NODE ELEVATION = 99.90 FLOWLENGTH(FEET) = 65.00 MANNING'S N I ESTIMATED PIPE DIAMETER (INCH) = 9.00 PIPEFLOW THRU SUBAREA (CFS) = .83 TRAVEL TIME(MIN.) = .23 TC(MIN.) = I 3.8 INCHES .013 NUMBER OF PIPES 1 5.59 1*************************************************************************** FLOW PROCESS FROM NODE 371.00 TO NODE 381.00 IS CODE = 1 ----.------------------------------------------------------------------------ I >>>>>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE<<<<< ----.------------------------------------------------------------------------ ---------------------------------------------------------------------------- I TOTAL NUMBER OF STREAMS = 2 CONFLUENCE VALUES USED FOR INDEPENDENT TIME OF CONCENTRATION(MIN.) = 5.59 I RAINFALL INTENSITY (INCH/HR) = 4.79 TOTAL STREAM AREA (ACRES) = .19 I PEAK FLOW RATE(CFS) AT CONFLUENCE = STREAM 1 ARE: .83 It*************************************************************************** FLOW PROCESS FROM NODE 380.00 TO NODE 381.00 IS CODE = 21 .--------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ----------------------------------------------------------------------------- -------,--------------------------------------------------------------------- I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT I TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 255.00 UPSTREAM ELEVATION = 104.20 I DOWNSTREAM ELEVATION = 103.80 153 I 1'1 II I ELEVATION DIFFERENCE = .40 TC = .323*[( 255.00**3)/( .40)]**.2 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT SUBAREA RUNOFF (CFS) -- TOTAL AREA (ACRES) = ** CONFLUENCE DATA ** STREAM RUNOFF NUMBER (CFS) 1 .83 2 1. 63 = 10.772 3.341 RUNOFF COEFFICIENT = .8570 1. 63 .57 TOTAL RUNOFF(CFS) Te (MIN. ) 5.59 10.77 1. 63 1. 63 INTENSITY ( INCH/HOUR) 4.790 3.341 AREA (ACRE) .19 .57 ~*************************************************************************** FLOW PROCESS FRml NODE 380.00 TO NODE 381.00 IS CODE = 1 II-:::::~~~~~~~;~-~~~~;~~~~;-~;~~~-;~~-~~~;~~~~~~:::::--------------------- >>>>>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES<<<<< IJ=========================================================================== TOTAL NUMBER OF STREAMS = 2 II CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: TIME OF CONCENTRATION(MIN.) 10.77 RAINFALL INTENSITY (INCH/HR) = 3.34 I TOTAL STREAM ARE1~ (ACRES) = . 57 PEAK FLOW RATE (CFS) AT CONFLUENCE = I I I ***'k*****************************WARNING********************************** I IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED ON THE RCFC&WCD FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMULA I WILL NOT NECESSARILY RESULT IN THE MAXIMUM VALUE OF PEAK FLOW. ***'k********************************************************************** I RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS. I I I II ** PEAK FLOW RATE RUNOFF (CFS) 1. 68 2.21 STREAM NUMBER 1 2 TABLE ** Te (MIN. ) 5.59 10.77 INTENSITY ( INCH/HOUR) 4.790 3.341 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: PEAK FLOW RATE (CFS) -- 2.21 Tc (MIN.) = 10.77 154- I ! 'I TOTAL AREA (ACRES) .76 **************************************************************************** I FLOW PROCESS FROM NODE 381. 00 TO NODE 382.00 IS CODE = 3 ---------------------------------------------------------------------------- I >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< I==~;:;:=;;=;~~:=~:===:~~=~:~:=;~;;=~;===:~;=~:~:;;========================== PIPEFLOW VELOCITY(FEET/SEC.) 6.5 I UPSTREAM NODE ELEVATION = 99.90 DOWNSTREAM NODE ELEVATION 98.78 FLOWLENGTH (FEET) = 40.00 MANNING'S N = .013 I ESTIMATED PIPE DIAMETER (INCH) = 9.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 2.21 I TR.II,.VEL TIME (MIN.) = .10 TC (MIN.) = 10.87 ~******:********************************************************************* FLOW PROCESS FROM NODE 390.00 TO NODE 391. 00 IS CODE = 21 1_-------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- I I ,I I I I ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS APARTMENT TC = K*[(LENGTH**3)/(ELEVATION CHANGE)] **.2 INITIAL SUBAREA FLOW-LENGTH = 500.00 UPSTREAM ELEVATION = 104.10 DOWNSTREAM ELEVATION = 99.20 ELEVATION DIFFERENCE = 4.90 TC = .323*[( 500.00**3)/( 4.90)]**.2 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = SOIL CLASSIFICATION IS "B" APARTMENT DEVELOPMENT RUNOFF COEFFICIENT = SUBAREA RUNOFF(CFS)- 2.42 TOTAL AREA (ACRES) = . 80 9.776 3.524 .8587 TOTAL RUNOFF (CFS) = 2.42 1*************************************************************************** FLOW PROCESS FROM NODE 391.00 TO NODE 392.00 IS CODE = 3 Ir-:::::~~~~~~~-~~~~;~~~-~~~~~~~~~-~~;~-~~~~;~~:::::------------------------ >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW)<<<<< It=========================================================================== 193 I 'I I I I **************************************************************************** DEPTH OF FLOW IN 12.0 INCH PIPE IS PIPEFLGW VELOCITY(FEET/SEC.) = 4.5 UPSTREAM NODE ELEVATION = 94.72 DOWNSTREAM NODE ELEVATION = 94.24 FLOWLENGTH(FEET) = 50.00 MANNING'S N ESTIMATED PIPE DIAMETER(INCH) 12.00 PIPEFLOW THRU SUBAREA (CFS) = 2.42 TRAVEL TIME(MIN.) = .19 TC(MIN.) = 7.8 INCHES .013 NUMBER OF PIPES 1 9.96 II-~~~~-~~~~~::_~~~~-~~~~---~~~~~~-~~-~~~~---~:~~~~-=:-~~~~_:_--~------------ >>>>>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA<<<<< >>>>>USING COMPUTER-ESTIMATED PIPESIZE (NON-PRESSURE FLOW) <<<<< I ----------------------------------------------------------------------------- -------.--------------------------------------------------------------------- I I I DEPTH OF FLOW IN 9.0 INCH PIPE IS PIPEFLOW VELOCITY(FEET/SEC.) 10.6 UPSTREAM NODE ELEVATION = 94.72 DOWNSTREAM NODE ELEVATION 91.00 FLOWLENGTH(FEET) = 40.00 MANNING'S N ESTIMATED PIPE DIAMETER(INCH) = 9.00 PIPEFLOW THRU SUBAREA(CFS) = 2.42 TRAVELTIME(MIN.) = .06 TC(MIN.) = 10.02 It=;:~=~;=;;~:=;;:::;::===================================================== I PEAK FLOW RATE (CFS) = 2.42 Te(MIN.) = 10.02 TOTAL AREA (ACRES) = .80 4.6 INCHES = .013 NUMBER OF PIPES 1 ============================================================================ I END OF RATIONAL METHOD ANALYSIS I I I I I I \'50