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" 4 th edition Robert M. Koerner, 1998 Prentice -Hall Project: CC &V Phase 5 2.5 Slope w/ 300 slope length Date: August 2007 By: J. F. Lupo rirgcxea: W'TrwE+C 0/4/97 Input Parameters Height of Slope (ft): Slope (Z:1): FML Thickness (mil): FML Yield Stress (psi): FML Specific Gravity: Soil Friction Angle Liner -Soil Interface Friction Angle (degrees): Anchor Trench Depth (ft): Anchor Trench Width (ft): Anchor Set -Back (ft) Soil Depth over Setback Soil Unit Weight (pcf): TENSILE FAILURE OF LINER FROM SELF -W T CA FML Density = Slope Length = Slope Angle = Liner Total Wt./ 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 At Rest Coeff. Active Pressure Coeff. Passive Pressure Coeff. Allowable Liner Force Shear Force Above Membrane Due to Soil Cover Shear Force Below Liner Due to Soil Cover Shear Force Below Liner Due to Liner Pull -Down Active Pressure Anchor Backfill Side Passive Pressure Anchor InSitu Side Sum of Forces FOS Pull -out LC'S Liner Calc's 300 It 2.5 80 mil 2200 psi 0.935 30 degrees 15 degrees 3 ft aft 3ft 2 ft 110 pcf pcf ft degrees lbs/ft lbs/ft lbs/ft psi 0_ lbs/ft Ibs/ft Ibs /ft lbs/ft Ibs/ft lbs/ft lbs/ft 86• PASS SMITH WILLIAMS CONSULTANTS, INC. PASS FOS must be greater than 10 to pass S PASS FOS must be greater than 10 to pass FOS must be greater than 5 to pass Geotech2005.xls 7/5/2007