Willis Touer

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Willis Tower
Sears Tower ss.jpg
Umwhile names Sears Tower (1973–2009)
Record hicht
Tallest in the world from 1973 to 1998[I]
Preceded bi One World Trade Center (1970)
Surpassed bi Petronas Twin Towers
General information
Type Office, observation, communication
Airchitectural style International
Location 233 S. Wacker Drive
Chicago, Illinois 60606
United States
Coordinates 41°52′44″N 87°38′09″W / 41.8789°N 87.6358°W / 41.8789; -87.6358Coordinates: 41°52′44″N 87°38′09″W / 41.8789°N 87.6358°W / 41.8789; -87.6358
Construction stairtit 1970
Completed 1973
Height
Airchitectural 442.1 m (1,450 ft)[1]
Tip 527 m (1,729 ft)[1]
Tap fluir 412.7 m (1,354 ft)[1]
Technical details
Fluir coont 108[2] (+3 basement floors)
Fluir aurie 416,000 m2 (4,477,800 sq ft)[1]
Lifts/elevators 104,[1] with 16 double-decker elevators, made by Westinghouse, modernized by Schindler Group
Design an construction
Airchitect Skidmore, Owings and Merrill[1] (Fazlur Khan & Bruce Graham)
References
[1]

The Willis Touer or formally called Sears Touer is an 108-story landmark skyscraper in the Chicago aurie.

References[eedit | eedit soorce]

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 "Willis Tower - The Skyscraper Center". Council on Tall Buildings and Urban Habitat. 
  2. The tower has 108 stories as counted by standard methods, though the building's owners count the main roof as 109 and the mechanical penthouse roof as 110. Emporis.com Retrieved on June 7, 2008