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The steel (G = 12,000 ksi) pipe shown in the adjoining figure is fixed to the wall support at C.

The steel (G = 12,000 ksi) pipe shown in the adjoining figure is fixed to the wall support at C.

The bolt holes in the flange at A were supposed to align with the mating holes in the wall support; however, an angular misalignment of 4o was found to exist.

To connect the pipe to its supports, a temporary installation torque must be applied at B to align flange A with the mating holes in the wall support.

The outside diameter of the pipe is 3.50 in., and its wall thickness is 0.216 in.

(a) Determine the temporary installation torque that must be applied at B to align the bolt holes at A. (3 pt)

(b) Determine the maximum shear stress in the pipe after the bolts are connected and the temporary installation torque at B is removed. (3 pt)

(c) If the maximum shear stress in the pipe shaft must not exceed 12 ksi, determine the maximum external torque TB that can be applied at B after the bolts are connected. (3 pt

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