Steps for How to solve

$4\mathrm{.}2$ Loads:

Roof:

$DL=10psf$

$LL=25psf$

$($snow horizontally projected$)$

Ceiling:

$DL=5psf$

$LL=10psf$

Bearing walls: DL $=10$ psf $(2$nd and $3$rd floors$)$

Floors: $,DL=20$ psf $(2$nd and $3$rd floors$)$

$LL=40psf(2$nd and $3$rd floors$)$

Determine the equivalent $($horizontally projected$)$ load on the rafters spaced at two feet, zero inches $2^{\text{'}}{0}^{\text{'}\text{'}}$ on center.

Determine the load per foot on the bearing walls.

Determine the loading and beam reactions for each of the steel wide$-$flange beams.

Plz help asap!! I really need help asap!!!