So i live in a pretty old 3 flat apartment building in chicago. Its probably over 100 years old. For one, part of the building is leaning; for example i can sit in one end of my room in a rolling chair, and roll to the other. Pretty much everything is at a slight angle. Im not too worried about this, but one thing that is making me a bit nervous about the safety of this flat, is that when buses drive by, or a strong wind blows, i can feel the apartment sway. Is that okay, or should i blow the whistle for an inspector to come take a look?