*1-92. 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) allow 150 MPa and the allowable bearing stress for the wood is (σb) allow = 28 MPa. Assume that the hole in the washers has the same diameter as the bolt. = 3 kN 2 m 2 kN 1.5 kN -2 m 1.5 m +1.5m+1.5 m-1.51 1.5 m CD B Prob. 1-92 D I *1-104. Determine the resultant internal loadings acting on the cross sections located through points D and E of the frame. 4 ft 1.5 ft A E D B 2.5 ft 3 ft- Prob. 1-104 MedRock Pro 5 ft 150 lb/ft