Inside The Burj Khalifa: How the $1.5 Billion World's Tallest Building Was Built!

Transcript

I'm on top of the world, but the hardest part was down there. Loose shifting sand. The worst place to build a skyscraper. >> Build heavy here and you sink. >> So, how do you stop the world's heaviest building from drowning? These monsters drill 50 m down, deeper than a 15story building. >> But the sand wants to collapse. So they fill the hole with ... Read More