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Citicorp Center | NYC skyscraper saved by a student question

submitted by Aard Vark

(oritteropo)
5 years 9 months 2 weeks ago

YouTube description:

The Citicorp Center repair is a classic engineering case study of how mistakes must be avoided in engineering and construction of public works. A skyscraper in New York City needed a unique structural system. While reviewing the design a student asked a question that made the engineer realize that a mistake had been made. There is a daring race to make the repairs for the building collapses. The video gives the details and then discusses how the engineer handled the situation.

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2 Comments

KrazyKat42 says...

Interesting vid. But I am skeptical of the 200k casualties thing.

oritteropo

says...

I suspect that's the worst case scenario counting everyone in the 10 block radius evacuation zone. They do say in the video that to get that figure they need to assume that the building failure would lead to the failure of some surrounding buildings (how many people would you assume would be at Bloomingdales?).

p.s. The estimate is from the Red Cross, and was quoted in the BBC two program The Works S2 ep 1 All Fall Down in 1996.

KrazyKat42said:

Interesting vid. But I am skeptical of the 200k casualties thing.