Chapter 11, Problem 11.52SP

A steel pipe has an outside diameter of $\text{12}$ in. and an inside diameter of $\text{11}$ in. A $\text{3}$ -in.-diameter solid cast-iron cylinder is placed in the pipe and is concentric with the pipe. The space between the two is filled with concrete (ultimate compressive strength = $\text{3}000$ psi). Compute the stress in each material when the assembly is subjected to an axial load of $\text{4}00,000$ lb.