So I finally was able to download and examine the FEA that gerrycan wanted to discuss but didn't want to provide.
At the time of writing, the document is available here:
https://kkkb6g.dm2303.livefilestore....ley.pdf?psid=1
Should that link cease to work, I may be able to provide it if requested.
I'm still examining it, but a number of things came to my immediate attention:
1. The FEA covers only 1 floor and does not consider movement of column 79 as pushed by the girder on the floor below it, which is something that NIST noted in their own FEA.
2. The simulation only covers about half a floor of WTC7, not the whole extent that NIST tested. It does include column 79 and the girders bracing to it, though.
3. The heat distribution differs substantially from that NIST used. It seems to be uniformly applied to all members, which is unrealistic for a real fire. Order matters when determining failure.
My preliminary conclusion before looking at it in more thorough detail is, therefore, that it does nothing to support or refute NIST's hypothesis.
At the time of writing, the document is available here:
https://kkkb6g.dm2303.livefilestore....ley.pdf?psid=1
Should that link cease to work, I may be able to provide it if requested.
I'm still examining it, but a number of things came to my immediate attention:
1. The FEA covers only 1 floor and does not consider movement of column 79 as pushed by the girder on the floor below it, which is something that NIST noted in their own FEA.
2. The simulation only covers about half a floor of WTC7, not the whole extent that NIST tested. It does include column 79 and the girders bracing to it, though.
3. The heat distribution differs substantially from that NIST used. It seems to be uniformly applied to all members, which is unrealistic for a real fire. Order matters when determining failure.
My preliminary conclusion before looking at it in more thorough detail is, therefore, that it does nothing to support or refute NIST's hypothesis.
via International Skeptics Forum http://ift.tt/22f2A5f
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