http://edition.cnn.com/2010/WO…/04/dubai.burj/index.html
The telescopic shape is also presents problems of a more practical nature Krane says.
"The upper 30 or 40 floors are so tiny that they're useless, so they can't use them for anything else apart from storage. They've built a small, not so useful storage warehouse half a mile in the sky," he said.