A jib crane on a dock supports a load component of $15$ kN in the x $-$direction, $25$ kN in the y $-$direction, and $20$ kN in the $-$direction on the end of the jib beam. The crane is fixed at point $\backslash ($ O $\backslash ),$ and the weights of the jib crane and the column are W$1$ and W$2,$ respectively. Find the plane stress state of the element on the surface of the vertical column at points A$,$ B$,\backslash ($ A$^\{\backslash$prime$\}\backslash )($opposite to position A$),$ and B$\text{'}$ just above the foundation. The outer radius of this column is $\backslash (\backslash$mathrm$\{$r$\}\backslash$mathbf$\{2=180\}\backslash )$ mm and the wall thickness $\backslash (\backslash$mathrm$\{$t$\}=20\backslash$mathrm$\{$~mm$\}\backslash ).$ Also, what are the points of stress and tensile stress at the base and the stress state at these points?