Problem

A timber beam AB of length L and rectangular cross section carries a uniformly distributed...

A timber beam AB of length L and rectangular cross section carries a uniformly distributed load w and is supported as shown. (a) Show that the ratio τ_m/σ_m of the maximum values of the shearing and normal stresses in the beam is equal to 2h/L, where h and L are, respectively, the depth and the length of the beam. (b) Determine the depth h and the width b of the beam, knowing that L = 5 m, w = 8 kN/m, τ_m = 1.08 MPa, and σ_m = 12 MPa.

Fig. P13.53

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Solutions For Problems in Chapter 13

61RP

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