1 A steel rod (ASTM-A242) of diameter = 50 mm (Ovp= 260 MPa) supports an axial load P = 50R and a vertical load R acting at the end of an 0.8-m-long arm (Fig. 1). (a) Draw a free-body diagram of the structure in Fig. 1. (b) Draw and label a stress element for point A on the rod. (c) Given a factor of safety Fs = 2.5, compute the largest permissible value of R using the following criteria: (i) maximum shearing stress and (ii) maximum distortion energy. 1.2 m 0.8m

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Bars

In civil engineering, bars refer to steel reinforcement bars or rebars. These are structural members primarily used for reinforcement purposes in masonry works. A bar is characterized by its cross-sectional area, which is negligible compared to its length. Bars are usually manufactured by steel which is uniform throughout the length, or by meshing multiple steel wires. Other materials of the bar include carbon steel, glass fiber, carbon fiber, and basalt fiber. The reinforcing bars are coated with epoxy resins and other materials to enhance some of their properties including corrosion resistance.