The compound wooden beam is connected together by a bolt at B. Assuming that the connections at A, B, C, and D exert only vertical forces on the beam, determine the required diameter of the bolt at B and the required outer diameter of its washers if the allowable tensile stress for the bolt is (σ_t)_allow= 150 MPa and the allowable bearing stress for the wood is (σ_b)_allow= 28 MPa. Assume that the hole in the washers has the same diameter as the bolt.

Transcribed Image Text:

1.5 kN 3 kN -2 m- 2 kN +1.5 m--1.5 m-|-1.5 m--1.5 m-| B.