Solved: The compound wooden beam is connected together by

Chapter 1, Problem 1-90

(choose chapter or problem)

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 \(\left(\sigma_{t}\right)_{\text {allow }}=150 \mathrm{MPa}\) and the allowable bearing stress for the wood is \(\left(\sigma_{b}\right)_{\text {allow }}=28 \mathrm{MPa}\). Assume that the hole in the washers has the same diameter as the bolt.