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View Diary: Condi Lied: Declassified Memo from Clarke (416 comments)

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  •  It didn't (4.00)
    The collapse of the WTC towers was a big mess that took out many of the surrounding buildings.  It was anything but a controlled demolition.  The only vague similarity between a controlled demolition and the WTC collapse is that in both cases physical structures move in the same direction, namely down.  This is due to a force known as "gravity".
    •  perhaps (4.00)
      we should explore this "gravity" lead. i'll get going on a diary right away.

      "Will we be Coca-colonized?" - L'Humanite

      by jokeysmurf on Thu Feb 10, 2005 at 08:09:00 PM PST

      [ Parent ]

    •  Also the WTC building design was different (none)
      They were basically big hollow tubes; support columns, lots of them, and placed more closely together than is typical, basically made the buildings hollow tubes.  Also, the buildings fell not because of the holes punched in the "tubes", but because the full, burning tanks of jet fuel melted the steel that held up the buildings.  The planes didn't knock them over; the buildings melted and collapsed straight down.

      Normal buildings are internally supported; you can see this structure with the Statue of Liberty.  The WTC buildings "hung" from the external frames that were the outer walls.

      And actually, those buildings overperformed.  They were designed to withstand the impact from a smaller plane, and the fact that they remained standing (and probably would have kept standing if they hadn't melted) is a testament to the engineers who designed them.

      Viva la revolucion!

      by spacekitty on Thu Feb 10, 2005 at 09:15:34 PM PST

      [ Parent ]

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