Question $2$: $10$ points

Figure $2$ shows an elevation view of a pre$-$fabricated steel building frame that is subject to a variety of snow and wind loadings.

Figure $2$: Elevation view of pre$-$fabricated steel building frame subject to snow and wind loadings.

Assuming that the frames are spaced at $20$ ft centers, and that the foundation$-$level supports and roof apex are pinned $($i$.$e$.,$ the frame can be modeled as a three$-$pinned arch$),$ compute the vertical and horizontal reactions at the base supports.