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World Trade CenterThe World Trade Center was originally designed by Minoru Yamasaki in the 1960's. Worthington, Skilling, Helle & Jackson, a structural engineering firm came up with the tube frame system used in the structure of the WTC. The following companies were used for various aspects of the actual construction of the WTC:

Port Authority's Engineering Department - Foundation engineers
Joseph R. Loring & Associates - Electrical engineers
Jaros, Baum & Bolles - Mechanical engineers
Tishman Realty & Construction Company - General contractor
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∙ 9y ago

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