Quote:
Originally Posted by Ecstatic Magnet
Does the fascia of one corner typically carry the weight of an entire skyscraper?
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Here is an e-mail from Chief Daniel Nigro
Regarding WTC 7: The long-awaited US Government NIST (National Institute of Standards and Technology) report on the collapse of WTC 7 is due to be published at the end of this year (although it has been delayed already a few times [ adding fuel to the conspiracy theorists fires!]). That report should explain the cause and mechanics of the collapse in great detail. Early on the afternoon of September 11th 2001, following the collapse of WTC 1 & 2, I feared a collapse of WTC 7 (as did many on my staff).
The reasons are as follows:
1. The collapse of WTC 1 damaged portions of the lower floors of WTC 7.
2. WTC 7, we knew, was built on a
small number of large columns providing an open Atrium on the lower levels.
3. WTC was build over a ConEd substation
4. numerous fires on many floors of WTC 7 burned without sufficient water supply to attack them.
For these reasons I made the decision (without consulting the owner, the mayor or anyone else - as ranking fire officer, that decision was my responsibility) to clear a collapse zone surrounding the building and to stop all activity within that zone. Approximately three hours after that order was given, WTC 7 collapsed.
Conspiracy theories abound and I believe firmly that all of them are without merit.
Regards, Dan Nigro
Chief of Department FDNY (retired)