A braced column is $500500mm$ and supports an ultimate axial load of $3000$ kN and moments in the $y-$direction $(My)=70kN-m$ and moments in the x $-$direction $($ Mx $)=140kN-m.$ The column is $4500$ mm in height and coefficient for effective height of the column $=0\mathrm{.}85$ in both directions. By applying appropriate design charts, calculate the required area of main reinforcements and links. Take cover to links $=40$ mm $,$ characteristics strength of concrete $($ fcu $)=35$MPa and characteristics strength of steel $($fy$)=450$MPa. Sketch the column you designed in the section to illustrate your design.

$[25$ Marks$]$