Posted by d on January 04, 2002 at 16:19:34:In Reply to: WTC progressive collapse- A Revisit posted by ngon nguyen on January 04, 2002 at 08:28:08:
Here' an attempt to sketch out Ngon Nguyen'theory in extremely schematic form. Note the failure of VE dampers in red.
Venting might have been slowed by the close spacing of exterior columns.
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