A $T$ section beam symmetrical about a vertical axis is made with a top flange $80$ mm wide

and $10$ mm thick to which a vertical plate $100$ mm deep and $8$ mm wide is welded, as

shown in figure $5.$ If the maximum shear force $V=15kN$ plot the shear stress distribution

diagram due to shear forces only. To draw the shear stress diagram, calculate only three

$(3)$ shear stress values:

$2\mathrm{.}1$ At the neutral axis, and

$(4)$

$2\mathrm{.}210$ mm from the top edge,