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Assignment___16__3.8_A_-_B

# Assignment___16__3.8_A_-_B - CIVE 335 3.8.A Date Assignment...

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CIVE 335 Date 10/30/08 Assignment # 16 Problem 3.8 - A p. 103 NAME (Last, First) 3.8.A Compute the critical shear stress and plot the distribution of shear stress on the cross section. 8" 3" = shear stress 2" V = shear force at the beam section Q = moment about the neutral axis of the portion of the cross section area between the edge of the section and the point where stress is being computed 10" I = moment of inertia of the section with respect to the neutral centroidal axis V = 20 kips b = width of the section at the point where stress is being computed 3" 8" Area 1 3" 3" Area 2 6.5" N / A 2.5" N / A Area 3 5" Area 4 3" 3" 8" 8" Computation for moment of inertia: Part y (in.) b d 1 24 6.5 8 3 18.0 1,014.0 1032.0 2 10 2.5 2.0 5.0 20.8 62.5 83.3 3 10 2.5 2.0 5.0 20.8 62.5 83.3 4 24 6.5 8 3 18.0 1,014.0 1,032 2,231 Alternative Solution: (Moment of Inertia only) 8" 8" Area 1 3" 3" 6.5" N / A N / A 10" Area 3 3" 3" Part y (in.) b d 1 24 6.5 8 3 18 1,014.00 1,032.00 2 20 0 2 10 166.7

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Assignment___16__3.8_A_-_B - CIVE 335 3.8.A Date Assignment...

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