Support 911Blogger


thermal expansion

My comments on NIST's WTC 7 report

I emailed the following comments to NIST today, well before the deadline for submitting comments. I utilized Kevin Ryan's recent critique of NIST's draft report. Gregg Roberts gave useful feedback on the text and "Americanized" the language.

* * * * *

Dear Sirs,

Here are my comments on the long-awaited draft for public comment of NIST's report on WTC 7, issued by NIST on August 21st, 2008.

1. Collapse Models

NIST's WTC7 collapse models: some observations

A few days ago I posted a graphic from NIST's latest WTC7 report that depicts the exterior buckling after global collapse initiation. In no way does it resemble how the structure actually looks when it imploded. I had not noticed that this was the model for the scenario without debris impact damage. You see, NIST actually has models for the scenario without debris impact damage and for the scenario with their best estimated impact damage (the damage to the south side). They conclude that the building would also have collapsed without any impact damage.

So I checked the report for their modeling of the exterior buckling with the best estimated impact damage; the model of what actually happened. It's there but there is something missing: the top 23 floors are not shown and the north side is not shown; the side that can actually be seen in the videos and photographs of the collapse.

Without damage
Image and video hosting by TinyPic

NIST Video: The Collapse of World Trade Center 7: Why the Building Fell

I managed to capture NIST's video and upload it to YouTube. The video can be found on NIST's website here:
http://www.nist.gov/public_affairs/releases/wtc_videos/wtc_videos.html

http://www.youtube.com/watch?v=ZGASzUFO-v8

The source file (.FLV) can be downloaded here:
http://www.megaupload.com/?d=61O5NZDQ

Government Urges Return to Stone Age

http://georgewashington2.blogspot.com/2008/08/government-urges-return-to-stone-age.html

The White House and U.S. National Institute of Standards and Technology (NIST) are urging Americans to return to the stone age for their own safety.

"After discovering that 'thermal expansion' of steel from a low-temperature fire led to the collapse of World Trade Center building 7," said NIST spokesperson Noh Wei, "we started realizing that other metal objects might also be at risk".

So NIST scientists tested other metallic objects using state-of-the-art computer models. The models predicted that every oven and barbeque in the country could disintegrate at any time, leading to a progressive collapse of entire houses.

"We also determined that car engines, airplane engines, and boat engines could all suddenly fail due to thermal expansion," said Wei. "Indeed, we soon realized that almost all industrial processes could lead to catastrophic failure, other than, perhaps, those used in freezers."

White House spokesman Phil Johnson agreed, saying