Despite I see no purpose here but "okay-I-want-to-draw-something" (Excuse me if it sounds too rude), I see the problem with scale. Either the people are too small or everything else is big. One rung of the stairs seems to be half-man size, and the elevator - it is enormous! All the buttons are much, and the top buttons are MUCH higher than the people. The mechanisms are also too big and strange. Or I just don`t know how elevators work.
Will there be underground constructions? If not, the ground level is too high. If yes... Well, that`s where the elevator could be really useful - to transport stuff from underground and back.
But all of it is just technical trivia. The main thing I`d like to see here is an idea. Construction.. and.. so? Construction of what, at least? I can`t figure out the purpose of these strange buildings. Or may be I just don`t see your hidden idea?
Tell us what you want so we could help you reach it.