Torsion and direct compression in the base of the boom

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Reference no: EM13711553

A work platform is elevated on the end of a boom that has the ability to extend its length and vary its angle with respect to the ground. The platform width is large compared to the boom diameter so that it is possible to load the boom eccentrically resulting in a combination of bending, torsion and direct compression in the base of the boom. At the base the boom is a hollow tube with an outside diameter of 8 inches and a wall thickness of 0.75 inch. It is made from SAE 1030 CR steel. Determine the factor of safety against static failure if the loading at a point at the base of the boom is M=600,000 in-lb. and T=76,000 in-lb., and there is an axial compression of 4800 lb.

Reference no: EM13711553

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