A beam is subjected to equal 13.5 kip-ft bending moments. Assume t₁ = t₂ = tw= 2 in., d = 15 in., b₁ = 6 in., and b₂ = 9

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A Beam Is Subjected To Equal 13 5 Kip Ft Bending Moments Assume T T Tw 2 In D 15 In B 6 In And B 9 1 (59.62 KiB) Viewed 12 times

A beam is subjected to equal 13.5 kip-ft bending moments. Assume t₁ = t₂ = tw= 2 in., d = 15 in., b₁ = 6 in., and b₂ = 9 in. The cross- sectional dimensions of the beam are illustrated. Determine: (a) the distance y to the centroid (measured from the bottom), the moment of inertia l about the z axis, and the controlling section modulus S₂ about the z axis. (b) the bending stress , at point H (positive if tension, negative if compression). (c) the bending stress OK at point K (positive if tension, negative if compression). (d) the maximum bending stress max produced in the cross section (positive if tension, negative if compression). b₁ 4 H M M 12 Answers: (a) y = i in.³. (b) oH = (C) OK = i (c) omax = i M in., I₂ = psi. psi. psi. M b₂ Cross section K in.4. S₂ = i