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Message - Re: twin towers collapse

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Posted by  Per Corell on June 03, 2003 at 14:21:51:

In Reply to:  Re: twin towers collapse posted by Bob A on June 03, 2003 at 12:38:04:

Hi
WTC-7 pancaked from the dameage at the ground floors this was obviously also the way the volume collapsed , there was a vawe of collapse along the building and one end fell first just trigging the rest of the structure to go down, rather like a box structure colapsing then how one and two brought the outher shell down also in a complex but different collapse.
The weak point in one and two shuld be the hangers holding the floors and the floor construction and the core that first was working holding the floors was a box structure aswell, ----- insulation would only slow down the the heat but if heat is not transported away it will reach thru insulation , so I agrea that the WTC-7 collapse is an important issue, as a result of the collapse of one and two.

 
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