2012-02-28_REVISION - M1980244 (70)

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Calc. FOS for Tensile Failure and Anchor Pull -out due to self- weight. Based on methods presented in "Designing With Geosynthetics" 4th edition Robert M. Koerner, 1998 Prentice -Hall Project: CC &V Phase 5 2.0 Slope w/ 300 slope length Date: August 2007 By: J. F. Lupo cheat-a: tvi rr.j _ R 4&O Input Parameters Height of Slope (ft): 300 ft Slope (Z:1): 2 FML Thickness (mil): 130 mii FML Yield Stress (psi): 2200 psi FML Specific Gravity: 0.935 Soil Friction Angle 30 degrees Liner -Soil Interface Friction Angle (degrees): 15 degrees Anchor Trench Depth (ft): 3 ft Anchor Trench Width (ft): 3 ft Anchor Set -Back (ft) 3 ft Soil Depth over Setback 2 ft Soil Unit Weight (pcf): 110 pcf TENSILE FAILURE OF LINER FROM SELF -WT CALC'S FML Density = Slope Length = Slope Angle = Liner Total WtJ Unit ft. = Max Tensile Force From Self -Wt. = Frictional Resistance = Tensile Stress (neg. frictional resistance) Tensile Stress (w/ frictional resistance) FOS Tensile failure (MIN) FOS Tensile failure (MAX) Max. Heat/Cool Force: Max. Tensile Stress Developed + FOS Tensile Failure = LINER ANCHOR CALC'S Liner Calc's pcf ft degrees lbs/ft lbs/ft lbs/ft psi At Rest Coeff. Active Pressure Coeff. Passive Pressure Coeff. Allowable Liner Force = -. °- lbs/ft Shear Force Above Membrane Due to Soil Cover = lbs/ft Shear Force Below Liner Due to Soil Cover ^= lbs/ft Shear Force Below Liner Due to Liner Pull -Down _ -_ lbs/ft Active Pressure Anchor Backfill Side _° lbs/ft Passive Pressure Anchor InSitu Side lbs/ft Sum of Forces FOS Pull -out SAC SMITH WILLIAMS CONSULTANTS, INC. FOS must be greater than 10 to pass FOS must be greater than 10 to pass FOS must be greater than 5 to pass Geotech2005.xls 775/2007