QUESTION $4[20$ Marks$]$

A steel column with a length of $6\mathrm{.}5m$ is subjected to an eccentric load as shown in Figure $3.$

Using both the allowable$-$stress method and the interaction method, select the most suitable

wide$-$flange shape with a nominal depth of $360mm$ for this application. The steel has a yield

strength $({}_y)$ of $225$MPa and a modulus of elasticity $(E)$ of $200$GPa.