P$3\mathrm{.}25$ Assume $W=40ft$ and $D=40ft.$ The unreduced roof live load is $20$ psf $.$ The live load on the second and third floors is $65$ psf $,$ and the live load on the fourth floor is $40$ psf$.$ Compute the total live load

in the following columns; A $1$ between third and fourth floor, D $2$ between second and third floor, and E $2$ between ground and second floor. $($Ans: $P_{A1}=16\mathrm{.}4k,P_{O2}=86\mathrm{.}4k,P_{F2}=64\mathrm{.}4k)$