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Willis Tower

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Willis Tower

56 次观看 43:56 Engineering Channel

描述

The Willis Tower (Sears Tower) is a 110-story, 1,450-foot (442.1 m) skyscraper in Chicago, Illinois, United States. At completion in 1973, it surpassed the World Trade Center towers in New York to become the tallest building in the world, a title it held for nearly 25 years; it remained the tallest building in the Western Hemisphere until the completion of a new building at the World Trade Center site in 2014. The building is considered a seminal achievement for its designer Fazlur Rahman Khan.

https://engineers-channel.blogspot.com/p/buildings.html