Dissecting the anatomy of London's hybrid skyscraper

12/5/2011 | Ars Technica

Completion of the Shard London Bridge, the 1,017-foot-tall skyscraper with a 72-story, 804-foot concrete core, is scheduled for May 2012. Built on a reinforced concrete base, the office floors are made up of steel frames, while the residences and hotel sections have post-tensioned concrete floors. The highest floors utilize a "hat truss" system, which engages the building's perimeter columns. What is key to this 21st century structure is its sound structural design that requires "placing material at optimum locations," according to Kamran Moazami, head of structures at WSP Group.

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