A copper rod of 50mm diameter is surrounded by a steel tube of 100mm external diameter, the ends being firmly fastened together, subjected to a compressive load of 30kN. Youngs modulus of elasticity of steel is 200GPa and that of copper is 120GPa. Evaluate the stress produced in the copper rod and steel tube.

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A tensile load of 190 kN is applied to a round metal bar with a diameter of 16 mm and a gage length of 50 mm. Under this load the bar elastically deforms so that the gage length increases to 50.1349 mm and the diameter decreases to 15.99 mm. Determine the modulus of elasticity and Poisson"s ratio for this metal.

A reinforced concrete column is constructed of 12 1-in-diameter steel rods. Calculate the force maximum allowable P that can be applied to the column if the allowable stresses are 12 kpsi in steel and 1200 psi in concrete. Esteel = 29 Mpsi, Econcrete = 3.6 Mpsi. Answer A reinforced concrete column is constructed of 12 1-in-diameter steel rods. Calculate the force maximum allowable P that can be applied to the column if the allowable stresses are 12 kpsi in steel and 1200 psi in concrete. Esteel = 29 Mpsi, Econcrete = 3.6 Mpsi. Answer: 560 kips.