Q$3$: $30\%$

Determine the moment capacity, $M_u,$ of the section shown in the figure below.

$f_c^{\text{'}}=32$ MPa gives $=0\mathrm{.}89$ and ${}_2=0\mathrm{.}802$

$f_{sy}=500$MPa gives ${}_{sy}=0\mathrm{.}0025$