An L-shaped pipe assembly of two perpendicular parts AB and BC is connected by an elbow at B and bolted to a rigid frame at C. The assembly carries a vertical load PA, a torque TA at A, as well as its own weight (see figure below). Each pipe is made of steel of unit weight w and nominal diameter d. What are the axial force, shear forces, and moments acting on the cross-section at point O? Consider the weight of the pipe assembly is uniformly distributed over its entire length. Show the Free Body Diagram (FBD) clearly in your analysis. The following information is given: • Dimensions: a = 0.6 m, b = 0.48 m, d = 63.5 mm (2.5 in.), • PA = 100 N, TA = 25 N · m, w = 5.79 lb/ft (taken from Table A4 for reference).
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