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aspundir · 24-08-2013, 07:15 PM

The Sears Tower, a skyscraper in Chicago, Illinois, has been the tallest building in North America since 1973. This 108 storey building is also the 7th tallest freestanding structure in the world at 442m . It surpassed the World Trade Center, which itself had surpassed the Empire State Building only a year earlier. Commissioned by Sears, Roebuck and Company, it was designed by chief architect Bruce Graham and structural engineer Fazlur Khan of Skidmore, Owings and Merrill.

24-08-2013, 07:15 PM	#3
aspundir VIP Member Join Date: May 2011 Location: churu Posts: 122,463 Rep Power: 245	Re: Tallest buildings in the world The Sears Tower, a skyscraper in Chicago, Illinois, has been the tallest building in North America since 1973. This 108 storey building is also the 7th tallest freestanding structure in the world at 442m . It surpassed the World Trade Center, which itself had surpassed the Empire State Building only a year earlier. Commissioned by Sears, Roebuck and Company, it was designed by chief architect Bruce Graham and structural engineer Fazlur Khan of Skidmore, Owings and Merrill.