How do you get a crane down from a tall building once it's completed?
In the US most are called Tower Cranes and they actualy lower them selves down part way then using Mobile Cranes they diss asemble them the rest of the way
you put in on the special crane elevator that got it up on the roof in the first place.
It gets disassembled and flown down with a chopper.
You don't have to worry about that in the deep south! There are no high buildings