Problem $6(16$ pts$)$

Determine the LRFD design strength, ${}_c{P}_n,$ and the ASD allowable strength, $\frac{P_n}{{}_c},$ for

the compression members shown. Use the AISC Specification Table $4-14($partly

provided in the next $2$ pages$)$ and steel with $F_y=50$ksi. Use the section area and radius of gyration listed below. The member is pinned at both ends as shown.

Use $W1060,(A=17\mathrm{.}7i{n}^2,r_{\text{m}\text{i}\text{n}}=r_y=2\mathrm{.}57in)$