This is just ego boobusting. It was long ago proven that once a building goes much beyond 60 floors, it becomes very uneconomical to run. With the Arab petro dollars flowing, the last thing they have to be concerned about is efficiency.
Interesting, it would take almost 1200PSI to pump water to the top floor without using a relay pumping station.
I wish Americans wouldn't have this attitude. We are the ones that should have the tallest buildings. Manhattan alone should have more skyscrapers than the rest of the world combined.
We just don't have enough skyscrapers in the United States and the few we have aren't tall enough either.
By now, we should have skyscrapers over a mile high. In fact, we should have entire cities contained within skyscrapers so that people never have to touch the ground their entire lives.
Imagine this: A city with 22,500 skyscrapers over 100 stories tall. 8,000 over 200 stories tall and 650 over 500 stories tall. All these skyscrapers connected together by bridges at varying heights.
The upshot is that you can spend your entire life within this skyscraper city and never get bored. Without even going to the ground floor, you will have access to hundreds of shopping malls, amusement parks, movie theatres, stadiums, and so forth. Thousands upon thousands of restaurants, coffee shops, bars, etc., all above ground level.
Imagine TEN Manhattans combined only all above ground level. This is what I'm talking about and this is what should be possible in the United States of America.