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How Manhattan escaped tragedy

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Uploaded on Oct 21, 2010

The Citygroup Center in Manhattan, New York, formerly known as the Citycorp Center,
had a fatal flaw which could have led to a major disaster, killing tens of thousands of people...

In 1978, the skyscraper's chief structural engineer, William LeMessurier, discovered a potentially fatal flaw in the building's design: the skyscraper's bolted joints were too weak to withstand 70-mile-per-hour wind gusts.

(source: http://www.pbs.org/wgbh/buildingbig/w...)

(c) BBC

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