[dm2]

http://www.newsobserver.com/2014/01/13/3530080/raleigh-condo...

http://www.wral.com/rebuilding-begins-at-brier-creek/1331351...

The building had not yet been properly attached to the foundation and the wind was record breaking (80+ mph). The wind likely went up under the structure and lifted it enough to push it off of it's foundation. NC is known to have regular hurricanes and tornadoes.

Concrete buildings collapse too, often times with much more devastating results: https://www.google.com/search?q=concrete+building+collapse&s...