The Sears Tower, now known as the Willis Tower, was primarily constructed using reinforced concrete and steel. The building features a unique bundle tube design, which consists of nine square "tubes" that provide stability and support. The exterior is clad with a combination of glass and aluminum, giving it a distinctive look and allowing for natural light to penetrate the interior spaces. These materials contribute to the tower's impressive height and iconic silhouette in the Chicago skyline.
drywall
steel and glass
It was made of steal.
It was made of steal.
Yes, Sears Tower is in use today.
The Willis Tower was made by putting a signature to a lease contract. The Willis Tower is formerly known as the Sears Tower. See related links for details.
According to the following website, the Sears Tower weighs 222,500 tons. http://archives.stupidquestion.net/sq21199.html
It is an office building.
structural steel, black anodized aluminum, bronze-tinted glass, and reinforced concrete.
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It was an office buildiing created as a corporate office for the Chicago based retailer Sears.