Above Them All

by Brian Fortner, Contributing Editor; Civil Engineering Magazine, ASCE World Headquarters, 1801 Alexander Bell Drive, Reston, VA.,

Serial Information: Civil Engineering—ASCE, 2000, Vol. 70, Issue 3, Pg. 48-51

Document Type: Feature article


The design for what would be the next world's tallest building relies on a 1,550 ft (472 m) high concrete core that will give occupants of the top floors of the building unimpeded views - no columns are necessary. Because the downtown Chicago site is a small one, the thin structure being designed by Skidmore, Owings, and Merrill relies on an innovative stayed-mast system and a series of cantilevered spaces to break up the wind and reduce movement in the upper floors.

Subject Headings: Building design | Floors | Wind engineering | Structural design | Space structures | Innovation | Concrete columns

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