At completion in 1973 it surpassed the world trade center in new york city to become the tallest building in the world a title that it held for nearly 25 years.
Floor plans sears tower.
The configuration incorporates the unusually large office floors necessary to sears operation along with a variety of smaller floors.
Willis tower formerly 1973 2009 sears tower skyscraper office building in chicago illinois located at 233 south wacker drive that is one of the world s tallest buildings the sears tower opened to tenants in 1973 though construction was not actually completed until 1974.
Sears tower its name until 2009 is a 110 story 1 450 foot 442 1 m skyscraper in chicago.
It was the first skyscraper in the world to incorporate this type of lifts.
It was also the tallest building in the western hemisphere for 41 years until the new one world.
Designed in the 1960s willis tower like its contemporaries was built atop a base to separate the urban streetscape from the building and to minimize the number of people walking along the sidewalk.
The stepback geometry of the 110 story tower was developed in response to the interior space requirements of sears roebuck and company.
Sears tower is an attractive and modern office with a floor area of 418 64 square meters of which are rentable 353 961 m.
The new plans break this barrier blending the building into the city it calls home and re energizing the downtown area.
Built for sears roebuck and company the structure reaches 110 floors and a height of 1 450 feet 442 metres.
Sears tower commentary the sears tower was the world s tallest building.
The stepped back profile reminiscent of skyscrapers of the 1920s is a solution to the engineering challenge of supporting such a tall tower.