General Discussion
In reply to the discussion: NYT BOMBSHELL: Significantly MORE 9/11 NEGLIGENCE Than Has Been Disclosed [View all]William Seger
(12,528 posts)... and it's no mystery to real experts. The bottom line in all three collapses was the loss of structural integrity. When that happens, all the theoretical calculations about safety margins become completely meaningless because the structural components can no longer work together to resist collapse. The specific factor involved in all three collapses was that columns need to be braced horizontally to resist buckling, and if that lateral support is lost, their load-carrying capacity drops drastically. Despite the fact that Richard Gage starts every lecture by attempting to con his audience into accepting an "appeal to authority" fallacy, claiming his AIA membership as proof of his own authority, he seems to be completely oblivious to this aspect of structural mechanics. That is because he does not have any actual training or experience in structural mechanics, physics, controlled demolitions, or fire science. In fact, he has very little experience in architectural design: Whereas architects typically concern themselves with things like exterior design and floor plans, not structural engineering, Gage himself actually spent most of his career as a project manager, not even as a design architect.
If you want specifics about the plethora of Gage mistakes, I highly recommend DU'er Bolo Boffin's site at http://ae911truth.info.