A square $6$inch$6$inch wood column $($post$)$ rests on a $5ft.5ft.$ square concrete

footing. Assume $P=7,000lb$ and that the column weighs $400lb.$

a$)$ Compute the normal stress caused by load $P$ at the top of the wood

post. Report answer in units of lb$/$in squared.

b$)$ Assuming the concrete footing weights $1,800lb.,$ compute the total normal stress actingunderneath $($i$.$e$.$ on the soil$)$ the footing. Report answer in units of $l$b$/$in squared.