Question $7(15$ Marks$)$

Determine the maximum design axial force $N^{**}$ that can be safely supported by a $310$UC$137$

Grade $300$ steel column with effective lengths $L_{ex}=12\mathrm{.}9m$ and $L_{ey}=4\mathrm{.}2m$ as shown in fig. B$.$

The load is applied at distance of $50mm$ from the center of column resulting in a moment on

the column about its $y-$axis.

Fig B