The hidden architectural oversight that nearly collapsed a New York skyscraper

How one design flaw almost toppled a skyscraper - Alex Gendler · 5:16 · Video: TED-Ed · Watch at the source

In short: In 1978, an architecture student discovered a terrifying error in the plans for the 59-story Citicorp Center. This video explores the engineering flaw that threatened to topple the tower into a densely populated district.

While working on her undergraduate thesis, Diane Hartley identified a structural mistake within the unique engineering of New York City’s Citicorp Center. The discovery revealed how a single oversight could have led to the collapse of the massive skyscraper.

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