Design the interior column shown below. Include self$-$weight of the column in load calculations. Assume a square tied section with equal bars on all four sides. Ensure the column behaves as a short column. Start at ${}_t=1\%.$ Indicate the interaction table used in your design. Indicate the compression lap length required for the bars chosen. $[6$ marks$]$

Given:

$f_c^{\text{'}}=25$MPa

$f_y=400$MPa

Super$-$imposed DL $=1\mathrm{.}5$kPa

Live Load $=4\mathrm{.}8$kPa

Snow Load $=2\mathrm{.}8$kPa

Eccentricity of load $=10\%$ of $h$

$\frac{M_1}{M_2}=+0\mathrm{.}5$

Tributary Area $=55m^2$