On July 16, 2009, the building was officially renamed the Willis Tower. illustration of sears tower, chicago, once the worlds tallest building 1974 - 1998 - sears tower stock illustrations General view of Chicago, and the Willis Tower, on Sunday, Jan. Named the Sears Tower throughout its history, in 2009 the Willis Group obtained the right to rename the building, as part of their lease on a portion of its offices.
It is situated on the 103rd floor of the building, at a height of more than 412m/1350 feet above ground level. The skyscraper is one of the most popular tourist destinations in Chicago, and over one million people visit its observation deck each year. The Skydeck is an observation deck in the Sears Tower, the highest such deck in the US. The main construction challenge was to meet the 15 months construction programme to complete the structure and reducing the construction.
Also another innovative structural system was used 'braced tube'( Khan FR, 1976). The tallest building in the entire United States, towering over the Chicago skyline and rising to an incredible 440 metres, Willis Tower is one of the citys. The Willis Tower is the second-tallest building in the United States and the eighth-tallest freestanding structure in the world. Sears tower was designed with a bundled tube system, the system provided strength for the structure and saving Sears 10mllion. At the time of its completion in 1973, it was the tallest building in the world, surpassing the World Trade Center towers in New York, and it held this rank for nearly 25 years. The Willis Tower, formerly known as the Sears Tower, is a 108-story skyscraper in Chicago, Illinois, United States. Sears Tower Location: Chicago, Illinois Project Completion: 1974 Site Area: 3 acres Project Area: 4,565,844 ft2 (105 acres) Number of Stories: 110 Building Height: 1,450 ft (442 m) Market: Commercial + Office. Willis Tower has been Chicagos icon since its completion in 1973, providing spectacular views from its observation deck. Learn the best ways to see famous Willis Tower (Sears Tower) and explore the most popular things to do in Chicago. Willis Tower (formerly named and still commonly referred to as Sears Tower) is a 108-story, 1,451-foot (442 m) skyscraper in Chicago, Illinois. Sears Tower (now Willis Tower) AR 412 Design of Multi-storeyed Buildings Neelesh Sharma 11110034 2. Check out our verified traveler reviews and photos of Willis Tower (Sears Tower) tours and other things to do in Chicago, and book securely when you find the perfect one.
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