Name Lesson 1 (1) The Sears Tower is one of the tallest buildings in the world (2) the glass-and-steel giant stands more than 110 stories high. (3) Designed for Sears, Roebuck, and Company in 1969.(4) What was innovative about this project? (5) The engineer, Fazlur R. Kahn, invented a way to use less steel. (6) One historian said, “Kahn changed high-rise architecture”.
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