A site is underlain by an $8$m thick layer of clay with $=35\mathrm{.}7$ and SU $=30$ kPa. The water table

is at the ground surface. A square, concrete unembedded footing with B $=1\mathrm{.}8$m will be loaded

with $180$ kN on this site.

A$.$ Calculate the bearing stress for this footing.

Circle your answer.

B$.$ Call a classmate and explain why you used the formula on page $28($point $3)$ and not the

formula on the example on page $21($to calculate the bearing stress$).$

C$.$ Draw the profile TO SCALE, with the footing.

D$.$ Calculate the short$-$term factor of safety of the footing.