Civil Engineering Marvels- 5 Tallest Skyscrappers
The Constructor
FEBRUARY 27, 2012
It has been hailed as one of the Seven New Wonders of the World and Seven Wonders of Engineering (Discovery Channel, 2005). Commissioned by Sears, Roebuck and Company, it was designed by chief architect Bruce Graham and structural engineer Fazlur Khan of Skidmore, Owings and Merrill.
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