Terminal 3 in Bejing's Capital Internaional Airport lost part of its roof. My guess is poor quality, lower cost materials were used, and not what was specified. Corruption often leads to materials being switched, and the difference is pocketed. 

Of course it could be the original specifications had issues, as with the Tacoma Narrows Bridge Failure. Youtube Video of the bridge.

Part of Beijing Airport Roof Takes Flight - WSJ

Labels: made in china