Construction of the World Trade Center

On the morning of August 5th, 1966, work on the World Trade Center finally began. More

The foundations themselves presented the first challenge. They would have to descend through 70 ft. of water-logged landfill before reaching bedrock. The greatest challenge by far, however, lay in the engineering of the towers themselves. The solution, developed by the structural engineers John Skilling & Leslie Robertson in the mid-1960s, was to re-conceive the basic structure of tall buildings.

AIR DATE 9/9/03