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Creative Speculation
In reply to the discussion: Cutter Charges in the North Tower... [View all]hack89
(39,181 posts)57. He was right at the edge of fire and below the impact floor
        what a fireman sees in one tiny pocket at the very edge of the fire says nothing about the fire on the floors above.
Three questions to ponder:
1. Which direction do fire in high rises spread? 
2. If the fires were so weak, why did so few survive from the floors above the impact zone? What stopped them from simply walking down to safety?
3. If you see massive smoke plume on the horizon sending thick clouds of smoke miles into the sky, do you think  "pretty weak fire there."? Those smoke plumes were large enough to see from space.
Take a close look at Madrid again. It remained upright only because it had a concrete core.  The steel portions of the building did collapse.
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        so you can tell from that picture that the puff is "exiting out of a single window"?
        zappaman
        Jan 2012
        #4
      
        
        But you haven't found it yet: keep looking. That link proves NOTHING. n/t.
        apocalypsehow
        Jun 2012
        #71
      
        
        There are reports of the air blowing down much further than that during the collapse.
        Bolo Boffin
        Jan 2012
        #10
      
        
        When the volume of a single floor went from 400K cubic feet to zero in fractions of seconds
        hack89
        Jan 2012
        #15
      
        
        "the installation of the charges took place at night and/or on the weekends when people weren't work
        zappaman
        Jan 2012
        #22
      
        
        maybe you and gyroscope can settle this and then get back to the rest of us
        OnTheOtherHand
        Jan 2012
        #29
      
        
        If the core of the tower collapses straight down while the perimeter remains stationary
        hack89
        Jan 2012
        #35
      
        
        The professional building community has been discussing these issues for some time.
        AZCat
        Jan 2012
        #39
      
        
        Hack says that "Buildings are not designed with vertical static loads in mind."
        jesters
        Jan 2012
        #43