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HomeMy WebLinkAboutTract Map 3883 Lot 194 Geotechnical Testing & Grading '~ ~'^ . \R. 3~ \...Or \'4 ~~~~~''''~,:!I1'.r,m_,.,'^ ...._,~.','I'''''~~~ll~ !SOiL TECH Geotechnical Consultants GeOlogy Soli Engineering Inspection & Testing Geotechnical Testing / Grading Report Lot 194 of Tract 3883 Project Number: 2801-C-88 prepared for: Craig pinter 25455 Knollwood Murrieta, CA 92362 \ "lQ7nn_Q I n.l-ln,...l",nrln. <;t,,,,,,,t SuitA 103. Post Office Box 1568. Temecula, California 92390. (714) 676--2745 ..~ ~ "'~--. . TABLE OF CONTENTS Section Number and Title 1.0 Site Description and Proposed Development ..,.... . . . . . . . . . . . . . . . . . . . . . . . . .. 1 1.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 proposed Development ..... ... .......... ....... 1 1.3 Existing Topography and Site Conditions ...... 1 2.0 of work .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Grading Operations ..... ......... ............. Site Plan .................................... Contractor and Equipment ... . . . . . . . . . . . . . . . . . . Site Preparation ............................. Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scope 2.1 2.2 2.3 2.4 2.5 3.0 Earth 3.1 3.2 Materials ...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Natural Earth Materials . ............ ..... .... Structure Location ............................ Paae ~ , , i' ,! ;1 'I 2-3 2 2 2 3 3 3 3 3 4.0 Foundation Recommendations ... . . . . . . . . . . . . . . . . . . . . . . .. 4-5 4.1 Expansive Soils .............................. 4 4.2 Expans ion Index ...... .. .. .. . .. .. .. .. .. .. .. ... 4 4.3 Steel Reinforcement . . . . . . . . . . . . . . . . . . . . . . . . ., 4 4.4 Foundation Guidelines ... ...... ....... ........ 4-5 5.:0 Conclusions and Recommendations...................... 5 5.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5 5.2 Grading Performed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5.3 Soil Conditions ............................... 5 summary of Maximum Density Optimum Moisture Relationship Curvets) Exhibit I summary of Field Density Test Results Exhibit II Summary of Expansion Test Results Exhibit III Laboratory Test Results Appendix A Compaction Test Report Site plan Figure 1 Soil Tech laboratories J,. "!,:>.~,,'j',~..,.,,!,..<.,., --'.),:"'W';;<;"""""''''W''~'!'1I'~_'l,~~J~,,,o:l! SOiL TECH Geotechnical Consultants Geology Soil Engineering Inspection & Testing September 6, 1988 Craig Pinter 25'455 Knollwood Murrieta, CA 92362 (7,14) 677-5840 Regarding: Geotechnical Testing / Grading Report Lot 194 of Tract 3883 Project Number: 2801-C-88 This firm has performed field observation and on the referenced site. Herein are submitted findings with the supporting data. [...----------- coillpar:.:tiQI!. testin'g the resultsor't:ne 1,0 Site Description and Proposed Development: 1.1 General: The subject property is located on Via Norte in the Meadowviewarea of Riverside County. 1.2 Proposed Development: The proposed site is to be developed into a single and/or two story wood framed, slab on grade residential structure. 1.3 Existina Topoaraphy and Site Conditions: At the time of grading, the topography was gently sloping. The site was covered by a light growth of native vegetation. 3 ?A7n~R I nc:. ~o,...lcnrl,...,~ ~+ <:111+0 1n':l _ D......~+f""'tHi......"'" o,,",v "h...r.CI _ T"................ .1-. """_1:.1:__1_ rv','u'""" ~"'Il II'\. ,"", "'-.A Lot 194 of Tract 3883 project Number: 2801-C-88 September 6, 1988 Page 2 2.0 pcope of work: 2.1 ~radina Operations: The grading operation consists of a cut, fill and export operation. Excavations were made on the northwest portion of the pad. Some material was exported off-site, the rest was used to fill the southern portion of the proposed pad (see site plan). Clean-outs of unsuitable materials were performed at the toe of proposed fill slopes to a depth determined by a Staff Engineering Geologist. Detailed information on fill depths is included on the site plan. Compaction tests are representative of all fill placed during the grading operation on August 5, 1988 to August 10, 1988. Export material was placed on Lot 205 of Tract 3883. A separate report (Job Number 2BOO-C-88) was prepared for the export site. 2.2 Site Plan: The attached Compaction Test Report Site Plan (Figure 1) represents the location of field density tests and approximate limits of fill. The site plan was adapted from field observation and the Grading plan provided by the Client dated June 29, 1988. 2.3 Contractor and Eauipment: The grading operations were performed through the use of a track mounted D-B dozer and a water hose. " Soli Tech laborat~rles .~..- . .. . Lot 194 of Tract 3883 Pr~ject Number: 2801-C-88 September 6, 1988 Page 3 2.4 Site Preparation: The base of the fill slope was keyed and benched into firm native soil. Deleterious and organic materials were removed prior to placement of fill. In addition. the subsoils were scarified a minimum of 12 inches below the exposed surface, and compacted to a minimum of ninety percent of the relative maximum density potential, in accordance with State and County standards. Compaction as accomplished by placement of fill material in depths of six to eight inches (see Exhibit II). 2;5 Testinq: Field compaction testing was performed in accordance with ASTM-D-1556-70 and ASTM-D-2922-81. Laboratory "proctors" (Maximum Density - Optimum Moisture Content Relationships), were performed in accordance with ASTM-D-1557. 3.0 Earth Materials: 3.1 Natural Earth Materials: The natural earth materials encountered during grading consist of brown silt sand mixture. 3.2 Structure Location: Should the proposed structure location transverse the daylight line between cut and fill, this office should be notified so that supplemental recommendations can be given. No conditions were observed during construction grading which would indicate a hazard from a soil mechanics standpoint. -5 Soli Tech Laboratbrles ------ -- . ""! I i I I Lot 194 of Tract 3883 project Number: 2801-C-88 September 6, 1988 Page 4 4.0 Foundation Recommendations: 4.1 Expansive Soils: Representative soil samples were retrieved upon completion of grading for expansive soil swell testing. The swell test procedure utilized was the Uniform Building Code Test Designation Standard 29.2. The material tested consisted of silty sand. 4.2 Expansion Index: The samples tested registered an expansion index of 06, .Very Low. expansive potential. Our enclosed "suggested Guidelines for Design of Foundation and Slab Systems"' should be referenced concerning design of on-site foundations for single and two story wood-framed strucures. 4.3 Steel Reinforcement: Based on the swell index, steel reinforcement is not mandatory for proposed footings and slab areas. It is suggested, however, that minimal reinforcement be provided in all footings and slabs. Minimal reinforcement should consist of one *4 steel bar located mid depth within the footings. Steel reinforcement within the footings shall be no nearer than 3 inches to any concrete surface. Minimum slab reinforcement should consist of 10.x10., #10x#10 gauge welded wire fabric placed mid-depth. 4.4 Foundation Guidelines: The foundation guidelines are for expansive soil conditions only and should not preclude more (p Soli Tech Laboratories .'-----... . . Lot 194 of Tract 3883 Project Number: 2801-C-88 september 6. ~988 Page 5 ridged structural requirements. The project engineer should be consulted to confirm adequete structural reinforcement. 5.0 Conclusions and Recommendations: 5,,1 General: Laboratory and field testing results indicate relative densities greater than 90 percent within the referenced fill portion of the subject pad to date. 5:2 Gradino Performed: Grading performed on the subject pad area of the referenced property meets the minimum standards and requirements of the Riverside County Building and Safety Department and utilized standard engineering principals and practices as observed by this firm. 5.3 Soil Conditions: The recommendations made are based on soil conditions only and should not preclude more ridged structural requirements. The project structural engineer should .be consulted to confirm adequate structural reinforcements. The findings and recommendations expressed in this report are based on field and laboratory testing performed during the referenced grading operation and no warranty is expressed or implied beyond the direct representations of this report. "\ Soli Tech Laboratories ...-,- . .. - .- Lot 194 of Tract 3883 Project Number: 2801-C-88 September 6, 1988 Page 6 Thank you for ,the opportunity to provide this report. please direct any questions to this office. Re9pectfully Submitted, SOIL TECH, INC. Reviewed By: B~~&- Michael K. Mason Manager of Operations n T. Rein art, RCE 23464 xecutive Vice President MKM:JTR/ceb Dist. (4) Addressee '0 Soli Tech Laboratories I~ Lot 194 of Tract 3883 Project Number: 2801-C-88 September 6, 1988 Page'7 EXHIBIT I SUMMARY OF MOISTURE DENSITY RELATIONSHIPS ASTM-D-1557-70 Test No. Sample Description Max Density 2. Brown silty sand. (SM) 123.3 Opt Moist. 9.7 '\ Soli Tech Laborotorles '~---... - - .'_.,-- ;<i- f If ~\ f I 1 , I' i I i . , Lot 194 of Tract 3883 project Number: 2801-C-88 September 6, 1988 Pi1ge 8 EXHIBIT II SUMMARY OF FIELD DENSITY RELATIONSHIPS ASTM-D-1556-70 Depth Moist Dry ReI. Req. or Cont. Den. % Max. Soil % No. :Test Location E1ev. % PCF Como. Den. Tvpe Como 1. S. End Base 7.0 109.6 88.9 123.3 2 90 2. ! Retest #1 +2 4.0 110 .5 90.0 123.3 2 90 3. S. End +4 9.0 117.5 95.3 123.3 2 90 4. Middle Pad +6 9.0 115.4 93.6 123.3 2 90 5 . Center +8 FG 9.3 112.3 91.1 123.3 2 90 FG - Finish Grade \0 Soli Tech Ldbordtorles .~. - - . ''!J ~ ~ f: !, ! I i Lot 194 of Tract 3883 Project Number: 2801-C-88 September 6. 1988 Pflge 9 EXHIBIT III Swell Test Results UBe 29.2 Samp1.? Surcharge Number Depth - Ft. P.S.F. Dry Density Moisture Condition Swell P.S.F. Before Test After Test Index 1. 1.5 144 113.0 7.8 16.8 06 \\ Soli Tech Laboratories '"", -. . APPENDIX A Laboratory Test Data Sheets Soli Tech LClboratorles Lid' , I I ~ 1 \2--- 135 130 .... '.' ,125 "- ~ '" .... ,~ VI !:: '" -0 '" .120 ... ,::. 115 110 PROCTOR TEST REPORT 1 ,'\. ! ! , i ! , , , , !I.. ! i , , i , i ! , , ; '\. , I , , i i , , , . '\. , , , : , , , I , , ! '\. I : I , : , , I 1 i ; . I i '\. I i i , i ! i I , , , , , : , , i" , 1 1 , ! i i i 1 i I I , , I , , : , I , , , 1,\ 1 , ! ! ! , i ! , ! I , i I ",l I I ! ! , i , i i I i i i , , , : ! ; I '\. i , i , l , I ! I 1 , , ! ! I I ! i i I : ! ! I'\.I I , i ! ! ! I I I 1 I I ! I I I I , , - \ j'\l I i , i i ! I I T , , , , ! , i , I i ./ i " i'\.; I , i , i , ! i , 1 1 , , I I , i I , I i I '- I I 1"- ~ I I : ! I I ! ! ! , , , , , i , i i I , I i i "-., '"' i I , i I T , , i , , i , : '- , I I I , I i i , 1 I ! i , , , I : I , i ! i I , 1"'- 1 I I ! , , . I , , ! , i , 1'- , i i , , , I , : : ..... , I , , I , ! , i . "- 1 1 , : : i i , , , 1"- , 1 I I , , ,'\,; , , , I ! , , ! , i I I ! , I , , i"J ! , , I ! , ; I I i ; ;"-i , - , , , , I , ! " I I! I I I .., ~ ~.J ~ -' .., ~ r ___, 10 1_, ~ ...;;......J 15 I I I , , ZAl,J -rOt' I SP .G.'" I 2.55 I I 17.5 1 I I Water content, ~ NModi-i'ied" Proctor, ASTM , Method A ev/ I 'pth i I Ch,ssi-i'icat ion uses AASHTO i Nat. I , , $p.G. ,Moist. I ., II ~. 2.55 ! ~ < No.2GG I PI ~ > No.4 LL SM % ., ,. TEST RESULTS MATERIAL DESCRIPTION SILTY SAND, BROWN Optimum moisture'" 9.7 ~ Maximum dr~ density = 123.3 pc~ ..rc..ject ~"'o.: 2S01-C-:=:8 Remarks: COLLECTED BY BD ~oj.ct: PINTAR PROJECT 8-8-88 .ocation: LOT 194 )::.. t e: 8'-;8-88 SAMPLE #2 \"? PROCTOR TEST REPORT SOIL TECH LABORATORIES Fig. ~jo. "- . --. SUGGESTED GUIDELINES FOR DESIGN OF FOUNDATION AND SLAB SYSTEMS ~l'.VDATlON S}'STE.~( I n'PE I II TYPE Il II n'PE III II n'PE IV I TYPE V ;:XPANSION RATE VERY LOW LOW MEDIUM I HIGH I VERY HIGH ;:XPANSION INDEX o - 20 21 - 50 51 - 90 I 91 - 130 I ABOVE 130 FOOTlNGDEPTH ( STO'RIES ) ONE TWO ONE TWO ONE TWO ONE TWO PERIMETER .12" 18" 12" 18" IS" IS' 24' 24' SPECIAL DESIGN INTERIOR 12" IS" 12" IS" 12" IS' IS' 24" REQUIRED FOR NOT 1 " No.4 Steel Bar 2 #4 BARS EXPANSION REINFORCEMENT 'REQUIRED TOP Al'iD BOTTOM (T&B) (T&B) INDEX ABOVE ,RAGE GRADE REA}.( NOT 12" X 12" WITH ONE 12" X 24" 130 (T DOOR OPENING REQUIRED #4 BAR TOP AND BOTTOM 2 #4 (T&B) 6 INCHES 'LAB THlCKNESS 4 INCHES NO:-'IINAL NOMINAL FLOOR SLAB 6" BY 6" REINFORCEMENT 6" X 6' - #)() / #10 #6/#6 FOR DWELLINGS NOT WELDED WIRE FABRIC WIRE MESH REQ UIRED GARAGES NOT REQ. 6"X6"#6/#6 'BCRADE MOISTURE :EQUlREMENT AT OPTIMUM MOISTURE 120% OF OPT. MOISTURE "[J(E OF' CONST. CONTENT OR GREATER BELOW SLAB AREA ,\fIL VlSQUEEN I INCH MINIMUM OF SAND ABOVE VISQUEEN )ISTURE BARRIER FOR ALL EXPANSION INDEX'S SAND ABOVE SAND 'BELOW I 2 INCHES I 4 INCHES lTES: 1) 'NUMBER 3 BARS 18 INCHES ON CENTER MAY BE SUBSTITUTED FOR WIRE MESH REQUIREMENTS. :2) SAND MA Y BE SUBSTITUTED WITH ANY NON,EXPANSIVE SOILS WHICH ARE APPROVED BY THE GEOTECHNICAL CONSULTANT. '31 ALL SWELL TESTING IS PERFOR:'lED FOLLOWING THE UNIFORM BUILDING CODE TEST DESIGl'iATION 29.2. 4) THESE FOUNDATION GUIDELI:-;ES ARE BASED SOLELY ON SOIL EXPANSION CHARACTERISTICS. AND SHOULD NOT PRECLUDE MORE RIGI~ STR UCTURAL CONSIDERA TIONS. THE STR UCTURAL ENGINEER SHOULD BE CONSULTED SHOl'LD LOADING REQUIRE;\lEl'iTS PRECLUDE THE DESIGl'i CRITERIA RECO:'>l;\IEl'iDED HEREIN. SOIL TECH LABORATORIES. 27800B LAS HACINDAS. UNIT 103 TE;\IECULA. CA 92391) 1714) 676-2745 I, l '\ \'\ . "'-. FIGURE 1 Compaction Test Report Site plan Soli Tech Laboratories ~::i j~ ;1 ",~ "';1 "I ,[ ;'i if,', r'J l" ~i t I ! I i i , \~ ..'., . . ~. I / / NOTE: SIZE OF PAD AND LENGTH Of ,., ./ ARE BY FIELD OBSERVATION ONLY. ...- ./ NO SURVEY W AS CONDUCTED BY T ( r ./ - - -- ( / ./ / I - - ( ----- --- I / r --- ( ,.- ( / I J ,/ ~ ( l l ./ I I \ ./ ~- ~ I l I ./ --- '- --- - --- 1 \ /' l ....- \ ./ I I '\.. / ....--./ I I ..... W .... - lI- I -- -- - -- - a: - 0 I ---- --- Z -- /" <( I /" I > / ./ I \ ./ I t ./ DA YLlGHT LINE ./ ".--"'0' _1>0-00_00 -.. I \ ./ .d, ,/ 0--- I "- ...- /' -'-5------ I .'" ---- - ..... ,/ --- 84 0/ ./ -- '" ./ 0""-- ./ .- / /' , . / .2 - .3 /' /' I ( I /" f, ( .- ,- -- --- '--- -- --- f;/ ( - --- - ----- I .---- .5 APP I /" OF ( /' \(,0 FIRM. ~"".ILTeCH ',;"""''''''CO' "^", ,og''--'''"g ~ r:~r.L..~,"'::"I'~ ~~'C'_;'. '''~c~'C'.on &. resting COMPACTION TEST REPORT SITE PLAN .OPEH - -- -1200 - ~ ---. --- ---. --- ---.. ~ ~ ~- CAMELIT A CIRCLE -- '--. ---- -- ~. -- --- SITE - _1190 ..__ -04-00..___'..__ - - .--1185 VICINITY MAP N.T.S. -.------ --- --- - - -_ _1180 \'\ ,GEND ~ATE LOCATION ~CTION TEST PROJECT NO. 2801-C-88 LEGAL: LOT 194 OF TRACT 3883 DA TE: 8/30/88 PINTER PROJECT 1" to 20' FIGURE NO.