Tony Szamboti
Illuminator
- Joined
- Jun 2, 2007
- Messages
- 4,976
Exactly and the elastic stress produced would pop
The welds that were welded in the core every 36 feet.
This would not explain the initial horizontal and vertical propagation, which is what the discussion was about.
There is also a problem with the core beams being bolted to the columns at every story with healthy moment connections on most of them. So the popping of the core column welds every three stories isn't a given but it would likely happen once the collapse was sufficiently underway. By that I mean three or more stories.
There is a serious problem for the present story with the very fast horizontal and no deceleration vertical initial propagation mechanisms. Controlled demolition with a core driven initiation and a pull-in of the exterior by the dropping core stories explains it very well. The whole notion of sagging trusses causing inward bowing minutes before collapse and it eventually causing exterior and core collapse does not work and is fraught with incoherence and inconsistencies.
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