Hangar construction question - Level Hangars?

Our City Council recently had some t-hangars built at KRBG. They were
built on a slope, I think 1.5%. The doors open real easily one way, and need
help going the other way. The floors aren't level, the walls aren't
vertical, albeit not by very much.
My question is: Doesn't this cause some structural problems? If a snow
load is put on these hangars, doesn't that put a lateral load on the
vertical columns? I don't ever remember a building being built where the
walls weren't vertical.

Al G