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11/13/2007 13:58 FAX <br />Project, Steve Adit Bulkhead, Sta. 2+65 <br />10' Thick, 10' Wide, 10' High, #6 Rebar_ <br />By M>?L/.CFA Date 10/30/07 <br />Sheet 5 of 8 <br />0015/018 <br />Plain concrete deep-beam bending stress design for earthquake acceleration: <br />Factored earthquake accelerated static fluid load, Ere := 144•(?f,•p,hi).w'b Efc = 786240 Jb <br />?e1• `icy ht•wt•o. <br />Factored earthquake accelerated line-of--sight fluid load, Ef,1 <br />E <br />E. 447229 ib <br />?ea'Lt'hb'wb""Yc•? <br />Factored earthquake accelerated bulkhead load, EM, <br />9 <br />Lbm = 50525 lb <br />Total factored earthquake load on bulkhead, Ua := Err + + l=bw Ua = 1283994 lb <br />Uniform factored earthquake load on bulkhead, u := Ua u = 12840 psf <br />llb'wb <br />2 <br />M„ = 160499 ft-lb <br />Nominal earthquake bending moment, v1 := 11.8 <br />Factored earthquake bending moment, uI :_ 11 M„ = 291817 ft-lb <br />Pc <br />144, L2` <br />Bulkhead section modulus, S := S = 2400 in3 <br />1w 6 <br />Concrete flexural (tensile) design stress, SAI: 3 f?i = 164.3 psi <br />Mu Ivl„ <br />Mu <br />US <br />S 144 LfC <br />24• lfc <br />6 <br />06 := fC1 Lf, L.F, = 8.60 ft <br />24•cs