Question: in example $2$ of principles in practice, in ch $3$ in the text, the total dead load of a typical contemporary wood$-$frame residential floor was determined to be $9\mathrm{.}5$ pounds per square foot $($psf$).$ what is the dead load of the same floor if the floor joists are $12$ in on center $($o$.$c$.)?$ show calculations.in example $2$ of principles in practice, in ch $3$ in the text, the total dead load of a typical contemporary wood$-$frame residential floor was determined to be $9\mathrm{.}5$ pounds per square foot $($psf$).$ what is the dead load of the same floor if the floor joists are $12$ in on center $($o$.$c$.)?$ show calculations.