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EPART SIXAppendix EAASHTO LRFD METHODOLOGY LEVEL SURCHARGE - 250 PSF8) Base SlidingLateral Driving ForcesR d = EH d x P ah + LL d x P qh= 1.50 x 1998 lbs +1.75 x 833 lbs= 4455 lbs/ftLateral Resisting ForcesR r = EV r (W f + W 1 ) x Tanφ of foundation= 1.00(1200 + 9600 ) x 0.577= 6232 lbs/ftCDR sl = RF sl (R r /R d ) = 1.00(6232/4455) = 1.40 > 1.0 OK9) Sliding at Lowest Reinforcement LevelLateral Driving Forces (at depth of 9.33')R d = EH d x P ah + LL d x P qh= 1.50 x 1739 lbs + 1.75 x 777 lbs= 3968 lbs/ftLateral Resisting Forces (at depth of 9.33')τ unit = EV r (1250 + Ntan (29) )= 1.00 (1250 plf + (9.33' x 1.00' x 120 pcf) tan (29))= 1871 plfτ soil = EV r (γ H (B-W u )) x Tan φ (of reinforced material) x C ds= 1.00 (120 pcf x 9.33' x 8') x 0.675 x 0.90= 5441 lbs/ftCDR sl = RF sl (R r /R d) = 1.00 ((1871+5441)/3968) = 1.84 > 1.0 OKE.4