The sketch below shows a small frame. The cross$-$sectional area of tie bar CB is $2i{n}^2.$

Show Reactions

Determine the following:

A$)$ The horizontal and vertical reactions at A and C$.$ Show them on the sketch above.

B$)$ The $($i$)$ internal axial force, $($ii$)$ internal shear force and $($iii$)$ internal bending moment acting on cross$-$section $a-a.$ Show them on a free body diagram.

C$)$ The axial stress on section b$-$b$.$