It was the first skyscraper in the world to incorporate this type of lifts.
Floor plans sears tower.
Sears tower commentary the sears tower was the world s tallest building.
The stepback geometry of the 110 story tower was developed in response to the interior space requirements of sears roebuck and company.
It was also the tallest building in the western hemisphere for 41 years until the new one world.
The stepped back profile reminiscent of skyscrapers of the 1920s is a solution to the engineering challenge of supporting such a tall tower.
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.
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.
Sears tower is an attractive and modern office with a floor area of 418 64 square meters of which are rentable 353 961 m.
Sears tower its name until 2009 is a 110 story 1 450 foot 442 1 m skyscraper in chicago.
Built for sears roebuck and company the structure reaches 110 floors and a height of 1 450 feet 442 metres.
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.
The surface is divided into 110 apartments 108 above ground which is accessed with 104 elevators 16 of which are double height.
At 1 454 feet and 110 stories tall the willis tower formerly known as sears tower was the world s tallest building from its construction in 1974 until 1998.