विलिस टावर

विलिस टावर
विलिस टावर
Former names	Sears Tower (1973-2009)
Record height
	Tallest in the world from १९७३ to १९९८
Preceded by	वर्ल्ड ट्रेड सेन्टर (१९७१)
Surpassed by	पेट्रोनाज ट्विन टावर
General information
प्रकार	Office, observation, communication
Location	२३३ साउथ व्याकर ड्राइभ; शिकागो, इलिनोइ ६०६०६; संयुक्त राज्य अमेरिका
Coordinates	41°52′44″N 87°38′09″W / 41.8789°N 87.6358°WCoordinates: 41°52′44″N 87°38′09″W / 41.8789°N 87.6358°W
Construction started	1970
Completed	1973
Height
Architectural	442.1 m (1,450 ft)
Tip	527 m (1,729 ft)
टप फ्लोर	412.7 m (1,354 ft)
Technical details
जाः	108 (+3 basement floors)
फ्लोर एरिया	416,000 m2 (4,477,800 sq ft)
एलेभेटर	104, with 16 double-decker elevators, made by Westinghouse, modernized by Schindler Group
Design and construction
आर्किटेक्ट	Skidmore, Owings and Merrill (Fazlur Khan & Bruce Graham)
References

विलिस टावर शिकागोया दकले तःज्जागु टावर ख। थ्व टावरया पुलांगु नां सियर्स टावर ख।

लिधंसा सम्पादन

↑ ^१.० ^१.१ ^१.२ ^१.३ ^१.४ ^१.५ ^१.६ Willis Tower - The Skyscraper Center. Council on Tall Buildings and Urban Habitat.
↑ 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