Select the lightest W$250$ section size for column $2-$B in the one$-$storey building shown in Figure I. The steel

grade is CSA G$40\mathrm{.}20/$G$40\mathrm{.}21350$W $(F_y=350$MPa and $\{$:$F_u=450$MPa$).$ The unfactored dead load $($including

superimposed dead loads and the selfweight of structural elements$)$ is $5$kPa. The unfactored snow load has

a value of $2\mathrm{.}5$kPa. The unfactored wind load is $2\mathrm{.}5$kPa. Assume that all beam to column connections are

pinned. Assume that the boundary conditions at the base of the columns $($foundations$)$ are pinned. The

column should only be designed for compression. Note that the lateral resisting system consists of

concentrically braced$-$frames, which are located around the perimeter of the building.