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I if IJf 6'Jvi •? v i nn LWJ V 111 Q/v 17 <br />Project, Pierce Adit Bulkhead, Stu. 3+04 By ME.l:.,/JFA Date 10/30/07 <br />_12' Thick, 12' Wide, 12' HiQh,_#6 Rebar_ Shea 5 of $ <br />Plain concrete deep-beam bending stress desi?n_for_earthquake acceleration; <br />Factored earthquake accelerated static fluid load, Efe := 144.Ofe•P' 11b' Wb Efe = 1132186 lb <br />Oea• `I Is•'Yw' hl• Wt-cL <br />Factored earthquake accelerated line-of-sight fluid load, Efm <br />9 <br />Efm = 790752 lb <br />Factored earthquake accelerated bulkhead load, 4m =_ ?en•1-t•hb•w'a--(c'a <br />9 <br />Ebm = 87307 lb <br />i <br />Total factored earthquake load on bulkhead, Uo. Efe + Efin + Ebm UO. = 2010244 lb <br />Ua <br />Uniform factored earthquake load onbulkhead, u := u = 13960 ps•f <br />hb' Wb <br />2 <br />Nominal earthquake bending moli,ent, := u wb Mn = 251280 fi-lb <br />8 <br />Factored earthquake bending moment, M <br />\/1 n NTH, _ 456874 ft-lb <br />Opc <br />144. Lt2 ! <br />Bulkhead section modulus, 6 S = 3456 in3 <br />Concrete flexural (tensile) design stress, &Z?L:= 3 fc fcl -= 164.3 psi <br />RR-- M" M, M <br />fin' cS - L . <br />S 144• I,1?: Q', i <br />24. Lfe <br />6 <br />E. <br />as fcI Lfc M Lfc = 10.76 ft <br />24• cs