Why are skyscrapers built thin, instead of stacking 100 arenas on top of each other?

Question

Why are skyscrapers built thin, instead of stacking 100 arenas on top of each other?

In: Engineering

Answer 1

Air speed impact that,
The wider the building more air pressure will be on walls. It is one of reasons buildings have curved structure,
Plus if you stack arens on each other the weight on lower walls will be too much (even with reinforced steel).