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i i/ is/cVvI I'j ') I rnn <br />Project, Steve Adit Bulkhead, Sta. 2+65 By MEL/J1+A Date 10/30/07 <br />10' Thick, 10' Wide, 10' High, #6 Rebar Shelet 3 of 8 <br />io Ol,j/018 <br />Bulkhead thickness (length) to resist concrete shear from static fluid, load on unstream face: <br />Factored static fluid load on bulkhead face, F. ]44'(?Fs•p•hb•wb F, = 1048320 lb <br />Fs <br />Factored static fluid Ioad/sq ft of face, Wfs wr; = 10483 psf <br />hb'wb <br />Concrete shear strength, Ic; 2, fc fcs = 109.5 l si <br />Fs <br />Bulkhead thickness to resist factored shear load, L. := Ls = 1.66 ft <br />2•(11b+wb)•144•f,, <br />Plain concrete deep-beam bending stress design for static fluid load on upstream face: <br />Deep-beam defined as Wb/Lt < 4 (ACI 318-02, Sec 10-7). <br />wb <br />= 1.0 which is less than 4. Therefore, this is a deep beam for design. <br />Lt <br />Factored static fluid load on bullJlead face,17 144 ?F; p 11b wb F S = 1048320 lb <br />Unifonn factored static fluid load on bulkhead, f F <br />s s f? = 10483 nsf <br />hb • wb <br />2 <br />Nominal static fluid bending moment, M„ fS• H'b Mn = 131040 ft-lb <br />8 <br />Factored static fluid bending moment, M„ := M n M = 238255 ft-lb <br />pc <br />144 ? I.t2 <br />Bulldiead section modulus, 5 := S = 2400 iJI3 <br />?NJ 6 <br />Concrete flexural (tensile) design stress, fc., := 3 V `c <br />M„ Mu <br />CrS t <br />144• Li <br />6 <br />M„ <br />,7"r" fc? Lsu := 24 Qs <br />fci = 164.3 psi <br />M„ <br />24-1,t <br />Lyi = 7.77 ft