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Steve Adit Bulkhead, As-Built <br />• Project, Sta.2+65 By MEL/.1FA Date 3/28/08 <br />10' Thick, 7'-7" Wide, 8'-2" High, Sheet 3 of 8 <br />#6 Rebar <br />Bulkhead thickness (length) to resist concrete shear from static fluid load on upstream face: <br />Factored static fluid load on bulkhead face, FS := 144•~fs'p'hb'~'b FS = 649828 lb <br />FS <br />Factored static fluid load/sq ft of face, wfs := h w wfs = 10483 psf <br />b b <br />Concrete shear strength, fps := 2~ fps = 159.9 psi <br />F <br />Bulkhead thickness to resist factored shear load, LS := s LS = 0.9 ft <br />2• (hb + wb) • 144• fps <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 />~'~'b <br />- = 0.8 which is less than 4. Therefore, this is a deep beam for design. <br />Factored static fluid load on bulkhead face, F~:= 144•~fs'p'hb'~'b FS = 649828 lb <br />F <br />Uniform factored static fluid load on bulkhead, fs := S fs = 10483 psf <br />hb' ~'b <br />2 <br />w <br />Nominal static fluid bending moment, M„ := fs• b M„ = 75490 ft-lb <br />8 <br />M <br />Factored static fluid bending moment, M„ := n M„ = 137254 ft-lb <br />~pc <br />144• Lt2 <br />Bulkhead section modulus, ~5,:= S = 2400 in3 <br />6 <br />Concrete flexural (tensile) design stress, f~i := 3 ~ f~l = 239.8 psi <br />Mu M„ M„ <br />144• I,t2 '~ . 24 j,t2 <br />6 <br />i M <br />u <br />r~:= f~l I-st ~= 24 65 Lst = 4.88 ft <br />