There's also the Citicorp Center: http://en.wikipedia.org/wiki/Citigroup_Center#Engineering_crisis_of_1978 http://en.wikipedia.org/wiki/Citigroup_Center#Engine

There's also the Citicorp Center: http://en.wikipedia.org/wiki/Citigroup_Center#Engineering_crisis_of_1978 http://en.wikipedia.org/wiki/Citigroup_Center#Engineering_cr... http://99percentinvisible.org/episode/structural-integrity/ http://99percentinvisible.org/episode/structural-integrity/