Correction for the weight of The Sears Tower
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How heavy is 13,110 long tons?
It's about one-fifteenth as heavy as The Sears Tower
The weight of The Sears Tower is about 198,600 long tons.
(officially "Willis Tower" as of 2009) (Chicago, Illinois)
The Willis Tower weighs approximately 198,600 long tons. The outer wall surface of the Tower is covered with black anodized aluminum panels which would total 110,000 sq. m (28 acres) if laid out together.