But how do they get the crane up there, do they have to move the crane each level, and as I said the crane surely can't reach the ground after a certain height?
How do they build skyscrapers?
From the bottom up is my guess. It's a damn sight easier than from the top down.
There are many ways to do it, depending on the situation. This doesn't answer your question but it's interesting nonetheless:
You break it down, large parts get helicopter off or service elevator for smaller parts.
Or they builds smaller crane to lower parts down then break down the smaller crane and elevator down.
What you should ask is how do Hong Kong build skyscrapers with bamboo sticks![]()
I always wondered how high one might be able to build something like this...
https://en.wikipedia.org/wiki/The_Tower_of_Babel_(Bruegel)
out of conventional stone/masonry.
(As to the question regarding the desirability of living in one of those Megacity-Pyramids
Urgh!)