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Home My WebLink AboutTract Map 9833-3 Lot 30 Grading Plans . . SCHROEDER ENGINEERING 1 GEOTECHNICAL ENGINEERING GRADING PLANS 7020 Pellet Street Downey, CA 90241 fax 562-927-9437 fax 562-927 -2857 Harry Wiersema 8315 Merrill Avenue Chino, CA 91710 Attention: Harry Wiersema April 27, 1999 Project No. 9807067-2 Subject: Slope stability analysis of fill slope at Lot 30, Tract 9833-3, APN 945-150-015, Temecula, California. Fill Slope Analvsis .' In accordance with your authorization, we have provided the soils engineering analysis of the existing fill slope as surveyed by Christensen Surveying & Mapping. The fill slope stability analysis in this report pertains to the as built precise grading plan, as prepared by Lawrence R. Phelps #35280 Professional Civil Engineer, State of California. The fill slope is stable as constructed. The attached slope stability analysis shows a minimum static factor of safety of 2.02 and a minimum Seismic factor of safety of 1.89. If any questions should arise concerning the information presented in this report, please feel free to contact us at your convenience. SCHROEDER ENGINEERING Rti:"Y12~ c'a;:lI~roed'" RCE 33529 Chie~~~~er 1 \ eope Stability Analysis . , Project: Lot 30, Tract 9833 Wrightwood California Section A-A' Pia ne 1 Section No 1 2 3 4 5 Section X coordinate 0 11 51 91 96 Section Y coordina te top 28.5 36 51 68 68 Section Y corrdinate bottom 28.5 29 36 65 68 Unit weight 125 125 125 125 Cohesion 200 200 200 200 angie of Friction 30 30 30 30 Friction in radians radians =0 0.523599 0.523599 0.523599 0.523599 Section width 11 40 40 5 Section area 38.5 440 360 7.5 Section weight 4812.5 55000 45000 937.5 Section length 13.0384 42.72002 40.11234 5 Section angle in radians 0.045423 0.173246 0.627308 0.54042 Section angle in degrees 2.602562 9.926246 35.94211 30.96376 W/cos& 4817.469 55835.84 55582.29 1093.303 (Wcons&)tanO 2781.367 32236,84 32090.45 631.2191 CL + (Wcos&)tan 0 5389.048 40780.84 40112.92 1631.219 (1+(tan& tanO)/F1)=M&1 1.012992 1.050018 1.207217 1.17149 (1+(tan& tanO)/F2)=M&2 1.008926 1 .034366 1.142374 1.117827 (CI+(Wcos&))/M&1 5319.933 38838.23 33227.59 1392.431 Wsin& 2470.276 9480.918 26413.54 482.3398 (CL +(Wcos&))/M&2 5341.37 39425.92 35113.65 1459.277 .15Wcos&+Wsin& . -400.994 2246.674 25163.92 608.8321 Sum of Static Resisting 76778.18 Sum of Static Driving 38847.08 Sum of Seismic Resisting 81340.22 Sum of Seismic Driving 27618.43 F1 =Static Factor of Safety 2.027905 F2=Seismic Factor of Safety 2.945143 80 70 60 50 40 30 20 10. o o __Series1 -Ilt- Series2 50 100 150 1r .ope Stability Analysis . Project: Section A-A' Lot 3D, Tract 9833 Wrightwood Plane 2 California Section No 1 2 3 4 5 Section X coordinate 0 11 51 91 96 Section Y coordina te top 28.5 36 51 68 68 Section Y corrdinate bottom 28.5 28 33 56 68 Unit weight 125 125 125 125 Cohesion 200 200 200 200 angle of Friction 30 30 30 30 Friction in radians radians =0 0.523599 0.523599 0.523599 0.523599 Section width 11 40 40 5 Section area 44 520 600 30 Section weight 5500 65000 75000 3750 Section length 13.60147 43.86342 41.76123 5 Section angle in radians -0.04542 0.124355 0.521834 1.176005 Section angle in degrees -2.60256 7.125016 29.8989 67.38014 W/cos& 5505.679 65505.84 86514.54 9750 (Wcons&)tanO 3178.705 37819,82 49949.19 5629.165 CL + (Wcos&)tan 0 5898.999 46592.5 58301.44 6629.165 (1+(tan& tanO)/F1)=M&1 0.98859 1.031378 1.144338 1.602452 (1+(tan& tanQ)/F2)=M&2 0.986115 1.038185 1.175649 1.733143 (CI+(Wcos&))/M& 1 5967.084 45175.01 50947.76 4136.887 Wsin& -2823.17 8062.258 37385.33 3461.538 (CL +(Wcos&))/M&2 5982.062 44878.82 49590.86 3824.938 .15Wcos&+Wsin& . -957.763 14556.72 37989.97 3369.642 Sum of Static Resisting 106226.7 Sum of Static Driving 46085.96 Sum of Seismic Resisting 104276.7 Sum of Seismic Driving 54958.57 F1 =Static Factor of Safety 2.30497 F2=Seismic Factor of Safety 1.897369 80 70 60 50 40 30 20 10 o o __ Series1 ---- Series2 50 100 150 ::> .ope Stability Analysis . Project: Section A-A' Lot 30, Tract 9833 Wrightwood Plane 3 California Section No 1 2 3 4 5 Section X coordinate 0 11 51 91 96 Section Y coordina te top 28.5 36 51 68 68 Section Y corrdinate bottom 28.5 24 26 44 68 Unit weight 125 125 125 125 Cohesion 200 200 200 200 angle of Friction 30 30 30 30 Friction in radians radians =0 0.523599 0.523599 0.523599 0.523599 Section width 11 40 40 5 Section area 66 740 980 60 Section weight 8250 92500 122500 7500 Section length 16.27882 47.16991 46.64762 5 Section angle in radians -0.38832 0.049958 0.422854 1.365401 Section angle in degrees -22.249 2.862405 24.22775 78.23171 W/cos& 8913.648 92615.55 134331.7 36772.95 (Wcons&)tanO 5146.297 53471.61 77556.46 21230.87 CL + (Wcos&)tan 0 8402.061 62905.6 86885.99 22230.87 (1 +(tan& tanO)/F1)=M&1 0.905145 1.011593 1.10434 2.112964 (1+(tan& tanO)/F2)=M&2 0.920207 1.009753 1.087773 1 .936244 (CI+(Wcos&))/M&1 9282.558 62184.67 78676.82 10521.18 Wsin& 2103.968 4619.23 50269.67 7342.353 (CL +(Wcos&))/M&2 9130.626 62298.03 79875.12 11481.44 .15Wcos&+Wsin& -4320'3 -8718.53 61619.7 6270.33 Sum of Static Resisting 160665.2 Sum of Static Driving 64335.22 Sum of Seismic Resisting 162785.2 Sum of Seismic Driving 54851.21 F1 =Static Factor of Safety 2.497313 F2=Seismic Factor of Safety 2.96776 80 70 60 50 40 30 20 10. o o __Series1 ____Series2 50 100 150 ~ .ope Stability Analysis . Project: Section A-A' Lot 30, Tract 9833 Wrightwood Plane 4 California Section No 1 2 3 4 5 Section X coordinate 0 11 51 65 82 Section Y coordina te top 28.5 36 51 55 65 Section Y corrdinate bottom 28.5 29 40 48 65 Unit weight 125 125 125 125 Cohesion 200 200 200 200 angle of Friction 30 30 30 30 Friction in radians radians =Q 0.523599 0.523599 0.523599 0.523599 Section width 11 40 14 17 Section area 38.5 360 126 59.5 Section weight 4812.5 45000 15750 7437.5 Section length 13.0384 41.48494 15.65248 17 Section angle in radians 0.045423 0.268366 0.519146 0.785398 Section angle in degrees 2.602562 15.37625 29.74488 45 W/cos& 4817.469 46670.55 18140.08 10518.21 (Wcons&)tanQ 2781.367 2694!:!.26 10473.18 6072.693 CL + (Wcos&)tan Q 5389.048 35242.24 13603.68 9472.693 (1 +(tan& tanQ)/F1)=M&1 1.012617 1.076332 1.158613 1.277572 (1+(tan& tanQ)/F2)=M&2 1 .008227 1.049772 1.103421 1.180988 (CI+(Wcos&))/M&1 5321.902 32742.9 11741.35 7414.605 Wsin& 2470.276 11932.04 7814.188 5259.107 (CL +(Wcos&))/M&2 5345.076 33571.35 12328.63 8020.993 .15Wcos&+Wsin& -400.994 5550.01 7577.747 5845.169 Sum of Static Resisting 57220.76 Sum of Static Driving 27475.61 Sum of Seismic Resisting 59266.05 Sum of Seismic Driving 18571.93 F1 =Static Factor of Safety 2.082602 F2=Seismic Factor of Safety 3.191162 70 60 50 40 30 20 10 o o __ Series1 --Ill- Series2 50 100 -> . . /~ A' 30 ~c (pO P. t 1-/0 ~ i Ro I ~c 0 0 ~ . 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