Wasn't the World Trade Center built for airplane impacts?

The WTC was designed to withstand the mechanical force of the impact of a Boeing 707. That airplane is about the same size as the two that hit the WTC They didn't allow for 2 factors 1 impact knocked the spray on insulation on the steel loose and ... read more

Yes, the WTC was built for airplane impacts. The Port Authority engineer on the WTC project, Malcolm Levy, released a white paper in 1964 claiming: “The buildings have been investigated and found to be safe in an assumed collision with a large jet airliner (Boeing 707—DC 8) traveling at 600 miles per hour. read more

This assertion is supported by Frank A. Demartini, the on-site construction manager for the World Trade Center, who said on January 25, 2001: “The building was designed to have a fully loaded 707 crash into it. read more