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11/13/2007 13:57 FAX <br />4 014/01e <br />Project, Steve Adit Bulkhead, Sta. 2+65 By MI'14117A Date 10/30/07 <br />10' Thick, 10' Wide, 10' High, 96 Rebar <br />Sheet , 4 of 8 <br />Reinforced concrete deep-beam bending stress design for static fluid load on upstream face <br />C = ?,J bWa = 0.85(3000)12a = 30600a T = A,fy = 60000A4 <br />C=T 30600a = 60000A, a = (60000 A0/30600 = 1.961 A, <br />Factored static fluid bending moment, Or M,, = 145600 ft-lb <br />?rc <br />Muin 12-Mu Muin = 1747200 in-lb <br />Maximum concrete rebar cover, d := 12.1. - m, d = 1] 6.500 in <br />Mu = A.,f,?(d-a/2) = 60000A,(116.5 - 1.961 A,/2) = 60000 A,d - 58830 Aye <br />58830 As2 - 60000 Asd + Main = 0 C1 := 58830 CZ := •-60000•d C3 := Kin <br />-C2 - FC27 -4-C, C3 <br />As 2-C, A, = 0.25 in2 <br />1 <br />One cage of 46 bars (0.44 in2 per bar, 0.750-in nominal diameter, 1.502 lb/ft) on 12.00-in c-c <br />(11.25-in between bars) provides 0.44 in2/ft of steel area. <br />Therefore, A, := 0.44 in2 <br />Check for adequacy, <br />Allowable factored bending moment, Au -Ci-(As2) - C;! AS Au = 3064211 in-lb <br />Design factored bending moment, Muin = 1747200 in-lb <br />Au <br />Factor of safety, FS := FS = 1.754 <br />Kin