(Solved): on 2: A square hollow structural section has been filled and encased in concrete as illustrated be ...

on 2: A square hollow structural section has been filled and encased in concrete as illustrated below. If an axial compressive force of \( 1000 \mathrm{kN} \) is applied on the composite column, Assume - \( 30 \% \) of load is carried by the steel and \( 70 \% \) carried by the concrete. - \( \mathrm{E}_{\text {STEEL }}=200,000 \mathrm{MPa}, \mathrm{E}_{\mathrm{CONC}}=25,000 \mathrm{MPa} \) Compute the following :; - The minimum thickness of the steel section (t) in \( \mathrm{mm} \) - The normal stresses in the concrete in Mpa - The normal stresses in the steel in Mpa - The change in length in the column in \( \mathrm{mm} \)