It's Amazing

I think it's so amazing how people figure out how to erect those metal buildings that I see scattered through our city. How do they figure out how big to make the structure? How do they construct each piece? It's just fantastic the skills these workers have acquired.  I even find it fascinating to watch the buildings go up piece by piece.  It seems to me that those metal buildings could withstand any type of natural disaster.  I definitely would feel safe in one during a storm.