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Willis Tower, Chicago, USA: Studded with Great Boost

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    Willis Tower, Chicago, USA: Studded with Great Boost Stair H andrail D esign | P re- C ast S hop D rawing | S teel Construction Det ailing • STEEL Construction Detailing Pvt. LTD • 315, PATEL AVENUE • AHMADABAD , India – 380059. To best in something is always the matter of pride so what if that tale belong to yesteryear. Same is the scenario of Willis Tower which used to be known as Sears Tower but still embracement of current name the title Sear Tower never wipe out from people’s mind. The Willis Tower has exceeded World Trade Centre in terms of being tallest building in the world. It held in this position for 25 years. Later on this position passed to Petronas Tower. Situated in 233 South Wacker Drive, Chicago, Illinois 60606, the construction of Willis Tower has started from 1970 and completed in 1972. The architectural desig n has given by Bruce Graham of leading architectural firm Skidmore, Owings & Merrill. Its name has ch