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Project As Built Koehler Tunnel Bulkhead By JFA Date 9!6/03 <br />8.42' x 10.5' (12.04' Thick. Sta 3+02j <br />Sheet 3 of 6 <br />Bulkhead thickness (length) to resist concrete shear from static fluid load on face: <br />Factored static fluid load on bulkhead face, F s := 144$ fs•p~h•1 F s = 3838578 Ib <br />F <br />Factored static fluid load/sq ft of face, ~ fs ~` s w fs = 43418 psf <br />h•1 <br />Concrete shear strength, f cs := 2',rf c f cs = 109.5 psi <br />Fs <br />Bulkhead thickness to resist factored static fluid load, L s := L = 6.43 ft <br />2•(h+l)~144•fcs s <br />Plain concrete deep-beam bending stress design for earthquake acceleration: <br />Factored earthquake accelerated static fluid load, E fe := 144•¢ fe•p~h•1 <br />~ ea-S ]s-y N,'h'1'a <br />Factored fluid mass accelerated by earthquake, E fm ~_ <br />g <br />~ ea•L t•h~l•y c~a <br />E fc = 2878934 lb <br />E ~ = 2331878 16 <br />Bulkhead mass accelerated by earthquake(: h := E b = 30401 <br /> <br />m m Ib <br />8 <br />Factored required strength for bulkhead accelerated by earthquake, U a := E fe + E ~ + E bm <br />U oc = 5241213 ]b <br />U <br />Factored uniform earthquake load on bulkhead face, u :_ °` u = 59283 psf <br />h•1 <br />z <br />Nominal earthquake bendirg nome~~t, M ~ :_ _°-~ ,~l ~ = 52536•^> ft-ib <br />8 <br />M <br />Factored earthquake bending moment, M u :_ ° M u = 808260 ft-lb <br />~ pc <br />Bulkhead section modulus, S := 144•Lz <br />6 <br />Concrete flexural (tensile) design strength, f cl := 3 • f c f cl = 164.3 psi <br />Mu Mu Mu <br />Qs• S aS• 144•Lz as• 24~L2 <br />6 <br />M <br />6s•-fcl L:= ° L=14.32 ft <br />24•a s <br />w~emi.mw vnnso3 u~i ua <br />