A typical cross$-$section of a square$-$shaped spread footing supporting a $500mm$ square concrete interior column is shown below. The column carries a specified dead load $(P_{DL})$ of $1000kN$ and a specified live load $(P_{LU})$ of $1000kN.$ According to the information provided by the geotechnical engineer, the allowable soil$-$bearing pressure $(q_{\text{a}\text{l}\text{l}})$ is $225$kPa. Use $25M$ regular uncoated bars for flexural reinforcement. Maximum aggregate size is $20$ mm$.$

Design the footing according to the CSA A $23\mathrm{.}3$ design requirements.

Given: $f_c^{\text{'}}=25$MPa $($normal$-$density concrete$)$

$f_y=400$MPa

${}_c=0\mathrm{.}65$

${}_s=0\mathrm{.}85$