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Project Title: 7-Eleven Fuel Tanks <br /> Discipline:Structural <br /> CULLUMBER ENGINEERING <br /> Project No.: CN1117 Originator: C.Dilworth Date: 5/17/2018 <br /> omponent:I Buoyancy Calculations Checked: W.Cullumber Date: 5/17/2018 <br /> Slab Reinforcement <br /> Material Properties <br /> fc= 2.5 ksi <br /> Fy= 60.0 ksi <br /> Depth to Reinf."d"= 33.0 in <--At location of maximum moment <br /> Beam Width= 48.0 in <br /> V„= 13.9 kip <br /> Mu= 167.0 k-ft <br /> Concrete Beam Design <br /> Mcr Scfr <br /> fc= 2500.0 psi <br /> fr= 7.5*sgrt(f,') <br /> fr= 375.0 psi <br /> h= 33.0 in <br /> S,= I9/yt <br /> le= bh3/12 <br /> V 35937.0 in" <br /> yt= 16.5 in <br /> Mcr= 816750 Ib-in <br /> = 816.75 k-in <br /> Mcr= 68.06 k-ft <br /> M�= 166.97 k-ft/ft <br /> 1.33*M„= 222.07 k-ft/ft <br /> 1.2*Mcg 81.68 k-ft/ft <br /> Min (1.33M, 1.2M)= 81.68 k-ft/ft <br /> Design-Tension Controlled-Rectangular Section <br /> Mu= 166.97 k-ft <br /> = 2003.62 k-in <br /> f,'= 2500 psi <br /> fy= 60000 psi <br /> b= 48.0 in <br /> d= 33.0 in <br /> 91= 0.85 <br /> 0= 0.9 <br /> E5= 29000000 psi <br /> econcrete= 0.003 <br /> PROPRIETARY AND CONFIDENTIAL- DO NOT COPY 7 of 10 <br />