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CPART SIXAppendix CRANKINE METHODOLOGY LEVEL SURCHARGE - 250 PSF12) Pullout ResistancePullout safety factors are determined on a level by level basis. The effective lengths and calculatedpullout is determined at each level and compared to a safety factor of 1.5.q for maximum stress, bearing pressureZL e =2.50'SG200H=10'L e =3.92'SG200L e =5.33'SG200ρ = 62˚L e =6.39'SG2001.756.75'B=8.5'Check each grid level for available pullout resistance against previously calculated tensile loads, a liveload surcharge is not considered as a resisting force:Pullout Resistance = (γH ov ) (2L e ) (Tan(φ)C i ) with H ov = average height of over burden.L e = (L - Height / Tan ρ)Height Grid H ov γ L e Tan34 C i Pullout Load FS po4) 8.00' SG200 2.00 120 2.50 .674 0.90 728 425 1.713) 5.33' SG200 4.67 120 3.93 .674 0.90 2665 611 4.362) 2.67' SG200 7.33 120 5.33 .674 0.90 5688 732 7.771) 0.67' SG200 9.33 120 6.39 .674 0.90 8680 637 13.63OK - All pullout safety factors are greater than 1.5C.8