Have you ever wondered about the safety of buildings that you were in? When cracks appear in walls, and foundations move, these things can be a real disaster. But I had no recollection of the day that the Korean department store collapsed.
That such a thing could happen does not surprise me, that it could happen in Korea did. So if you are building any kind of out house, factory or what not. You may want to read the story of what happened.
I can think of a lot of ways to use a steel buildings for my own business. But I would always check to make sure the buildings operated well within their safety limitations.