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Willis Tower (Sears Tower) - Chicago

Country USA Willis Tower (Sears Tower)
Floors 110
Height(m) 442
Height(ft) 1450
Architect Skidmore, Owings and Merrill
Date Built 1974
Link Building Link
Concept No
Complete Yes

Designers and Builders :

Vital Statistics :

The Willis Tower (Sears Tower) which is considered as one of the finest locations for business in Chicago,is a multi-tenant office building with more than 100 different companies doing business there, including major law firms, insurance companies and financial services firms. It has a rentable floor area of 418,064 sq. m (353,961 sq. m) and a total of 104 elevators which includes 16 double-decker elevators.

Earthquyake Safety :

Special Design Features :The design for the Willis Tower incorporates nine steel-unit square tubes in a 3 tube by 3 tube arrangement, with each tube having the footprint of 75 feet by 75 feet. The design allows future growth of extra height to the tower if wanted or needed.

Observation Decks :The Sears Tower Skydeck observation deck on the 103rd floor of the tower is 412 m (1,353 ft)