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How potentially fatal flaws in its design were uncovered by an undergraduate and corrected by the architect after the building was already completed. Warning: this video is more like a podcast with intermittent illustrations (25 min).
"Concrete's versatility at work in an incredible range of structures, including Frank Lloyd Wright's Fallingwater, the Salginatobel Bridge in the Swiss Alps, and Dubai's Burj Khalifa."
An explanation of the aerodynamic loads and design failures that brought about the dramatic collapse of the bridge known as "Gallopin' Gertie" (9 min).
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