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36.8 <br />5 <br />0.70872 <br />5 <br />- <br />0.71127 <br />5 <br />0.01 -0.01 40 40 19.2 Ok Ok 0.04 0 <br />26.8 0.01872 <br />5 -0.0168 3.17 -3.17 40 40 19.2 Ok Ok 0 0.08 <br />36.8 <br />5 <br />0.70872 <br />5 <br />- <br />0.71127 <br />5 <br />0.01 -0.01 40 40 19.2 Ok Ok 0.04 0 <br />26.8 0.01872 <br />5 -0.0168 3.17 -3.17 40 40 19.2 Ok Ok 0 0.08 <br /> <br />H =42 <br />h =40 <br />bf =12 <br />bw =12 <br />tf =24 <br />Yt = (h✕bw✕h/2+Max(0,(bf-bw)✕tf✕tf/2))/(h✕bw+Max(0,(bf-bw)✕tf))= 20 in <br />Yb = h-Yt20 in <br />I = bw✕h✕h✕h/12+h✕bw✕(h/2-Yt)✕(h/2-Yt)+Max(0,(bf-bw))✕tf✕tf✕tf/12+Max(0,(bf- <br />bw))✕tf✕(tf/2-Yt)✕(tf/2-Yt)= 64000 in4 <br />St = I/Yt= 3200 in3 <br />Sb = I/Yb= 3200 in3 <br />fr = 5√fc= 250 psi <br />φMn_Pos=0.6✕(Min(St✕0.85✕f'c, Sb✕fr)/12000) <br />φMn_Neg=0.6✕(Min(St✕fr,Sb✕0.85✕f'c)/12000) <br />φVn=0.6 * (4/3*√fc*bw*h/1000) <br />Page 244 of 290