An aluminum alloy pipe with an outside diameter of 4.9 in. and a wall thickness of 2/16 in. cantilevers upward a distance of L-21 ft. The pipe is subjected to a wind loading that increases from WA-12 lb/ft at its base to wg = 18 lb/ft at its tip. (a) Compute the maximum value of Q for the pipe. (b) What is the maximum vertical shear stress in the pipe?

A 2024-T4 aluminum tube with an outside diameter of 2.4 in. will be used to support a 30-kip load. If the axial stress in the member must be limited to 17.5 ksi, determine the wall thickness required for the tube.

An aluminum alloy pipe with an outside diameter of 4.0 in. and a wall thickness of 6/16 in. cantilevers upward a distance of L = 12 ft. The pipe is subjected to a wind loading that increases from wA = 11 lb/ft at its base to wB = 17 lb/ft at its tip. (a) Compute the maximum value of Q for the pipe. (b) What is the maximum vertical shear stress in the pipe?