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How Far Underground Are Skyscraper Foundations?

Groundworks How Do Skyscraper Foundations Compare? Burj Khalifa Dubai 2,723 Shanghai Tower China 2,073 One World Trade Center New York City Taipei 101 1,776 Taiwan 1,667 Willis Tower Chicago 1,451 ATA AZA Wilshire Grand Center Los Angeles 1,100 R 謝 條 軍 90 100 150 ft below ft below 164 ground ground ft below Basement 262 Basement ground ft below 282 ground Basement Floors: 5 Floors: 3 Basement ft below ground Floors: 5 ft below ground Floors: 1 Basement Basement Floors: 5 Floors: 5 Wilshire Grand Center: 18-foot-thick concrete mat that set a Guinness World Record for the largest continuous concrete pour in history Willis Tower: 114 reinforced concrete caissons set into bedrock; five-foot thick concrete mat Taipei 101: Four-foot-thick wall extending down 154 feet cuts off groundwater that starts about six feet below grade; 380 foundation piers, each with a five-foot diameter One World Trade Center: Rock anchors extend 80 feet into bedrock; underground supports built around the preexisting commuter trains Shanghai Tower: 980 foundation piles, each with a three-foot diameter; 20-foot-thick reinforced concrete mat Burj Khalifa: 192 foundation piles, each with a five-foot diameter; 12-foot concrete mat *Measurements in feet Source: Groundworks

How Far Underground Are Skyscraper Foundations?

shared by wursti on Jan 20
Most people marvel at the height of a skyscraper. They count the stories of the buildings that dominate skylines, and they measure the spires of the "supertalls" that achieve impressive heights. How...




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