<blockquote>The Burj Khalifa took five years to finish. But for Sky City, BSB will fabricate the parts offsite over four months and spend three months erecting the building on location, at a pace of five stories a day.

Once finished, Sky City’s 11 million square feet will host a school, a hospital, offices, and apartments and hotel rooms for 30,000 people. Residents can take one of 104 elevators or a six mile ramp curling around the interior to access courtyards with basketball, swimming, tennis, and theaters. The walls will provide 900,000 square feet of vertical farming space. It’s to be a skyscraper city.</blockquote>
via <a href="http://singularityhub.com/2013/06/04/chinese-firm-gains-approval-hype-to-raise-worlds-tallest-building-in-only-90-days/">Chinese Firm Gains Approval, Hype to Raise World’s Tallest Building in Only 90 Days | Singularity Hub</a>.