assignment 2 ( sears tower) by wati

The Sears Tower is located in Chicago,USA. It can be found in The City Centre of Chicago, Illinois. It is the 4th tallest buildings in the world started from this year ,2008. Before that, it is the tallest building in the world since 1974 until 1996 and also the tallest building in The United States since 1974 until 2008. The Architect was Bruce Graham, Skidmore, Owings and Merrill from SOM company. The Sears Tower was completion in 1974,it is very tall skyscraper with 90th floor and reaches 442 metres/ 1,450 feet, 108 stories also.

The Sears Tower were took three year to build and some 1,600 worked on the project. Overall about the cost is US$ 150,000,000. The building is very strong because it is made from steel and facing materials is black aluminum. it's used for office and mall . The style of the building is modern. The Sears Tower hold the Book Of Record for 25 years before Kuala Lumpur Petronas's Tower.