No steel was recovered from WTC 7 at all. Nor tested per 'Stages of General Practice in Failure Analysis'. Metals Handbook Vol. 10, Failure Analysis and Prevention - 8th Edition, American Society for Metals.
http://wtc.nist.gov/NCSTAR1/NCSTAR1-3index.htm
Third party testing would confirm whether on not molten steel existed at WTC 7, although it appears according to FEMA C that intergranular melting occurred in one piece of tested WTC steel:
http://911research.wtc7.net/wtc/evidence/metallurgy/WTC_apndxC.htm
NIST has recently weighted in on whether on not this steel in question was from WTC 7 or not:
Response to Ron Brookman's FOIA request:
In a letter dated June 24, 2010, from Michael E. Newman, Senior Communications Officer, NIST, he states, "Finally, it should be noted that origins of the samples were not definitively known. …Thus, it was not possible to conclusively link the first sample to WTC 7 nor was there other evidence to suggest that such failures occurred in WTC 7 leading to its collapse. Since this phenomenon was observed in isolated instances, it was not studied further."
"The first appeared to be from WTC 7." NIST makes great manipulative use of that piece NOT being positively identifiable with WTC 7. They use that as their reason to not study it further.
How did they ever land on "the first APPEARED to be...."? Explain this please.
http://www.youtube.com/watch?v=cCdRA09pztM
These unreliable (so you say) and non-expert (so you say) firefighters really meant molten ____________________[Oystein fills in the blank].
And what fraction of total building metal (limit your answer to WTC 7 please) was that? Doesn't have to be precise, ballpark will make my point very well, thank you.
Please limit your scope of inquiry to me, not Mr. Gage. I've asked a slew of questions in this thread that have received little more than roughshod, thoroughly lazy answers.
I'm here to learn, and unlike y'all, I don't have a closed mind about the structural stability of WTC 7. Again, tell me about how those 4000 tons of steel from floors 7-14 offered no resistance to the 1G descent for 2.25 seconds...according to NIST (stage 2). Tell me your hypothesis on the apparent (so you imply) "no energy dissipation" through this column steel.
Teach me what NIST won't about that amazing initiation of the beam between columns 79 and 44 at floor 13. How did those perpendicular floor beams both buckle
and push the intersecting girder (with or without shear studs, depending on which NIST report you read) off its seat? How exactly?
Help me to understand why NIST is withholding the WTC 7 contract and ancillary construction docs from Ron Brookman S.E., and is denying his FOIA attempts to procure 3,370 files that include:
1. Remaining input and all results files of the ANSYS (FEA) 16-story Case B collapse initiation model
2. Break element source code
3. ANSYS scripts files for the break elements
4. Custom executable ANSYS file
5. All spreadsheets and other supporting calculations used to develop floor connection failure modes and capacities.
6. Connection models
Pointing me to more NIST woo does not make your case. Answering my questions (that remain unanswered, fyi) takes effort. Effort that hitherto remains unseen.
Thanks,
Derek