If the crane boom ABC in Prob. 11–3 has a rectangular cross section with a base of 2.5 i...

If the crane boom ABC in Prob. 11–3 has a rectangular cross section with a base of 2.5 in., determine its required height h to the nearest in. if the allowable bending stress is σ_allow = 24 ksi .

(Reference Problem 11-3)

The engine crane is used to support the engine, which has a weight of 1200 lb. Draw the shear and moment diagrams of the boom ABC when it is in the horizontal positions shown.