The Jin Mao Tower (Chinese: 金茂大厦; pinyin: Jīn Mào Dàshà; literally "Golden Prosperity Building") is an 88-story landmark supertall skyscraper in the Lujiazui area of the Pudong district of Shanghai, People's Republic of China. It contains offices and the Shanghai Grand Hyatt hotel. Until 2007 it was the tallest building in the PRC, the fifth tallest in the world by roof height and the seventh tallest by pinnacle height. Along with the Oriental Pearl Tower, it is a centerpiece of the Pudong skyline. It was surpassed on September 14, 2007 by the Shanghai World Financial Center.
It was designed by the Chicago office of Skidmore, Owings & Merrill. whose complexity rises as it ascends, draws on traditional Chinese architecture such as the tiered pagoda, gently stepping back to create a rhythmic pattern as it rises. The foundations rest on 1,062 high-capacity steel piles driven 83.5 m deep in the ground to compensate for poor upper-strata soil conditions. At the time those were the longest steel piles ever used in a land-based building. The piles are capped by a 4 m-thick concrete raft 19.6 m underground. The basement's surrounding slurry wall is 1 m thick, 36 m high and 568 m long, and composed of 20,500 m³ of reinforced concrete.
~++helen~
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