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The Willis Tower, originally and still commonly referred to as the Sears Tower, is a 110-story, 1,451-foot (442.3 m) skyscraper in the Loop community area of Chicago in Illinois, United States. Designed by architect Bruce Graham and engineer Fazlur Rahman Khan of Skidmore, Owings & Merrill (SOM), it opened in 1973 as the world's tallest ...
Another notable SOM engineer is Bill Baker, who is best known as the engineer of Burj Khalifa (Dubai, 2010), the world's tallest man-made structure. To support the tower's record heights and slim footprint, he developed the "buttressed core" [62] structural system, consisting of a hexagonal core reinforced by three buttresses that form a Y shape.
Read Fast Facts from CNN about Willis Tower, formerly the Sears Tower, located in Chicago. ... Structural height - 1,450 feet or 110 floors. Height with the two antennas - 1,730 feet.
[2] [3] Sears Tower was the tallest building in the world upon its completion, and remained the tallest building in the United States until May 10, 2013. [4] The second, third, and fourth-tallest buildings in Chicago are the Trump International Hotel & Tower, St Regis Chicago, and the Aon Center, respectively. Of the ten tallest buildings in ...
Formerly known, and still commonly referred to, as the Sears Tower. It was the tallest building in the world from 1974 until 1998. It is the third-tallest building in the Western Hemisphere and the 26th-tallest building in the world. [6] [7] 4 111 West 57th Street: New York City United States: 435 m (1,427 ft) 84 2021 Also known as Steinway Tower.
At the time of the attacks, only the Petronas Towers in Kuala Lumpur, Malaysia, and the Willis Tower (known then as the Sears Tower) in Chicago were taller. [20] Built with a novel "framed tube" design that maximized interior space, the towers had a high strength-to-weight ratio requiring 40 percent less steel than more traditional steel-framed ...
The twin towers of New York City's World Trade Center were iconic. They stood tall as a testament to the strength and abilities of the humans who built them, and to both the city and country that ...
Formerly known, and still commonly referred to, as the Sears Tower. It was the tallest building in the world from 1974 until 1998. It is the third-tallest building in the Western Hemisphere and the 26th-tallest building in the world. [7] [8] 4 111 West 57th Street: New York City: United States 435 (1,428) 84 2021 Also known as Steinway Tower.