$12\mathrm{.}4$ The column section shown in Fig. $12\mathrm{.}10$ is part of a frame unbraced against sidesway and supports an axial load $P_D=166$

$K$ and a moment $M_D=107K*ft$ due to dead load and $P_L=115K$ and $M_L=80K*ft$ due to live load. The column is

bent in single curvature and has an unsupported length $l_{}=16ft.$ The moment at the top of the column is $M_2=1\mathrm{.}5M_1,$ the

moment at the bottom of the column. Check if the section is adequate using $f_c^{\text{'}}=5$ksi,$f_7=60$ksi,$($top$)=2\mathrm{.}0,$ and $$

bottom$)=1\mathrm{.}0.$

Chapter $12$ Slender Columns