Determine the compressive load that can be carried by a $40617860$ UB in Grade S$275$ steel over a height of $5\mathrm{.}6m.$ Assume that the member is braced against weak axis failure and that the maximum design moment about its strong axis is $72kNm$ and the UB section is compact.

$(17\%)$

Check the capacity of a $20320386$ UC in Grade S$275$ steel to withstand an axial compressive load of $2600kN$ over an unsupported length of $3\mathrm{.}5m.$ Assume that both ends are held in position but no restraint in rotation is provided.

$(7\%)$