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Creative Speculation
In reply to the discussion: Cutter Charges in the North Tower... [View all]gyroscope
(1,443 posts)20. Compression requires an airtight seal.
        For this extreme compression of air to occur, you would need an airtight seal between the upper block and lower block. or else the air simply escapes out of the gap between the two blocks. there was no airtight seal between them.
2) the installation of the charges took place at night and/or on the weekends when people weren't working.
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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