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Originally Posted by Dilbert1234567
Well, host I think that’s the nail in the coffin; that is the final report on WTC 7. as for your the quote from http://wtc.nist.gov/oct05NCSTAR1-3index.htm, you take it out of context, in the case of the study of WTC 1 and 2, no steel from 7 was recovered. This says that when they did the investigation of the 2 towers, they did not bother with the tower next to it, this is not an omission, its just common since, the study you quote is not about WTC 7 so why would they collect evidence from it.
Thanks ASU2003, I did not see that report yet, it does a great job, I did not know that the worst fires were on the 5th floor where the diesel was stored, and that is where the structural collapse started.
As for the sounds 9 seconds before hand, it could be one of the tanks finally blowing up, could be any matter of things, if you heat a fire extinguisher, eventually it will explode. It does not just have to be a bomb.
willravel, how are you doing with those articles I posted for you? |
Dilbert1234567...you did not see a NIST "final report" on WTC 7, because one does not exist.....it won't be released by NIST until at least, "late 2006".
I cannot grok your "take" on what NISTS's "no steel" from WTC 7, really means. Consider that, WTC 7 was part of ther NIST investigation and evidence gathering until spring 2005. Your unusual opinion prompted me to read skim the entire June 2004, NIST "Appendix F Interim Report on Inventory and Identification of Steels Recovered from the WTC Buildings"
It's as if NIST didn't give a shit about steel forensics testing of any buildings other than WTC 1 & 2.
As recently as June 2004, long after site clearing was complered, NIST failed to obtain and identify structural steel samples from WTC 7, a 47 story building that collapsed into it's own, unique, seperate footprint.
Dilbert1234567, "no WTC 7 steel" means just what it says. NIST has no structural steel samples identified from WTC 7 to test. Seems like evidence of criminal negligence or intentional obstruction of the fire investigation!
Quote:
http://wtc.nist.gov/progress_report_.../appendixf.pdf
From page 39 of 68:
At present, there are seven samples from WTC 5, all in the GZ-series (see Attachment 1.2.9). These are
coupons that were removed at the WTC site and held by GMS, LLP. They were subsequently sent to
NIST once the Investigation officially began.
<b>No structural elements have been positively identified from WTC 7.</b> However, the columns were fabricated from conventional 36 ksi, 42 ksi, and 50 ksi steel that complied with ASTM specifications.
F.5 STRUCTURAL STEEL ELEMENTS OF SPECIAL IMPORTANCE
Of the 41 exterior column panels and 12 core columns positively identified, many were considered
especially important to this Investigation. Two major categories of steel are considered to be of special
value:
• Samples located in or around the floors impacted by the airplane
• Samples that can represent 1 of 14 grades of steel specified for the exterior columns, 1 of 4
grades of steel specified for the core columns, and 1 of the 2 grades of steel for the floor
trusses
from page 42 of 68:
F.6 SUMMARY
<b>NIST has 236 samples from the WTC buildings, the majority belonging to WTC 1 and WTC 2.</b> These
samples represent roughly 0.25 percent to 0.5 percent of the 200,000 tons of structural steel used in the
construction of the two towers. NIST believes the collection of steel from the WTC towers is sufficient
for the Investigation. This assertion is drawn from the following two statements. First, recovery of
material from locations in or near the impact and fire damaged regions of WTC 1 and WTC 2 was
remarkably good, including four exterior panels directly hit by the airplane and three core columns
located within these areas. Second, sufficient representative samples exist for all 14 grades of exterior
panel material, 2 grades of the core column material (which represents 99 percent, by total number, of
columns), and both grades for the floor truss material.
This report identifies the structural steel elements recovered from the WTC towers. Later reports will
determine the physical and mechanical properties of the steels and weld metal and the characteristics of
the metal, weldments, and connections from WTC buildings. Additionally, a damage assessment/failures
mode examination of the recovered structural steel elements will be performed. This information will be
utilized in an effort to determine why and how WTC 1 and WTC 2 collapsed following the initial impact
of the aircraft.
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See the following post: