Miles wrote in message ...


That is flat out false. The building was supported by a rigid central
core. The exoskeleton was designed to absorb wind loads and not apply
those loads to the central core. The gravitational loading of the
building was supported by the central core.

Wrong, PBS aired a special on the building of the towers and there was no
central rigid core as most skyscrapers are constructed. That is what made
the towers unique, the support was the outside steel structures, the
strength coming from the cross members holding it together.