Question

A beam ABC with an overhang from B to C sup- ports a uniform load of 200 lb/ft throughout its length (see figure). The beam is a channel section with dimensions as shown in the figure. The moment of inertia about the z axis (the neutral axis) equals 8.13 İn.4 200 Ihn (a) Calculate the maximum tensile stress o, and max- imum compressive stress due to the uniform load. (b) Find required span length a that results in the ratio of larger to smaller compressive stress being equal to the ratio of larger to smaller tensile stress for the beam. Assume that the total length L a+b 18 ft remains unchanged 0.787 in 2.613 in.

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Answer 1

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