$6.($a$)$ A universal column section acting as a stanchion carries an axial load $an{d}_d$ two further loads from incoming beams supported by brackets as shown below. Determine the stresses acting at the corners: $A=146{10}^{6}give{n}_n$ the properties of the column are $A=11,400m{m}^2,I_{}=146{10}^{6}mm{s}^3$

$($b$)$ A column is shown below, with dimensions $400mm300mm.$ A compressive load of $340$ kN is applied at a point $75$ mm from the $y-y$ axis and $100$ mm from $x-x$ axis. Determine the stresses at AD and CB$.$

$(10$ marks$)$