The Design of the Twin Towers
Clip: Season 16 | 2m 14s
The design and construction of the twin towers of the World Trade Center marked a dramatic break with nearly a century of skyscraper tradition. The unprecedented height and size of the towers posed a new kind of structural challenge. They needed not only to support the sheer weight of the 1,360-ft-tall buildings, but to overcome the even greater loads caused by the high winds of New York Harbor.
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Improvements in elevators and the creation of structural steel made skyscrapers possible.
On the morning of August 5th, 1966, work on the World Trade Center finally began.
The unprecedented height and size of the towers posed a new kind of challenge: wind.
Unlike earlier skyscrapers, the twin towers were erected in huge prefabricated components.
Engineers had to consider all possible events that might happen in a high rise building.