Quote:
Originally Posted by Hartlepool
ychtt,what I say is that half a dozen men with handtools could have replaced the central column boltings at a lower level with substitute substandard boltings,almost silently.
This could collapse the central columns as shown on video everywhere.
Explosions would be good but not absolutely necessary as bolt failure would occur with the slightest of movements of the building,(bolt shearing).
I'm not saying this is what caused any collapses of buildings of course.
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I work in the construction industry so i've got a fair idea about structure etc..
Changing the bolts would be basically impossible and you would run to much risk given the wait of the structure their would be far to much chance of a small part of the collapsing or becoming visibly unstable. If this happened then the question would be raised why has some one changed the bolts.