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Debunking NIST’s Conclusions about WTC 7: Easy as Shooting Fish in a Barrel

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George Washington’s Blog
Friday, Aug 22, 2008

Symmetrical Collapse

NIST lamely tried to explain the symmetrically collapse as follows:

WTC 7’s collapse, viewed from the exterior (most videos were taken from the north), did appear to fall almost uniformly as a single unit. This occurred because the interior failures that took place did not cause the exterior framing to fail until the final stages of the building collapse. The interior floor framing and columns collapsed downward and pulled away from the exterior frame. There were clues that internal damage was taking place, prior to the downward movement of the exterior frame, such as when the east penthouse fell downward into the building and windows broke out on the north face at the ends of the building core. The symmetric appearance of the downward fall of the WTC 7 was primarily due to the greater stiffness and strength of its exterior frame relative to the interior framing.

NIST can’t have it both ways. If the exterior frame was so stiff and strong, then it should have stopped the collapse, or – at the very least – we would have seen a bowing effect where tremendous opposing forces were battling each other for dominance in determining the direction of the fall.

In real life, the thick structural beams and “stiff [and strong]” exterior frame used in the building should have quickly stopped any partial collapse, unless the support columns were all blown. At the very worst, we should see a 1 or 2 floor partial collapse.

Freefall Speed

 

 

NIST said that WTC 7 fell at 40% slower than freefall speed. But it collapsed alot faster than it would have if the structural supports were not all blown away at the same instant. 40% slower isn’t very impressive — that’s like arguing that a rock falling through concrete 40% slower than a rock falling through the air is perfectly normal.

Again, why did the building collapse at all, given that the thick structural beams should have quickly stopped any partial collapse?

article continues below


 

Fires Knocked Down Steel-Frame Buildings

 

 

NIST said fires alone brought down Building 7, but other office fires have burned longer and hotter without causing collapse.

No Explosive Sounds

NIST also said:

“No blast sounds were heard on the audio tracks of video recordings during the collapse of WTC 7 or reported by witnesses.”

Oh, really?

What about this, this, this, this, this and this?
 

 

Moreover, as discussed below, high-tech explosives don’t necessarily make the same loud “booms” that dynamite make.

High-Tech Explosive Residues

 

 

And why were there residues for high-tech explosives at ground zero (and see this)?

Molten and Partially Evaporated Steel

 

 

And what about the pools of molten metal at ground zero for months? And why was the at and under the ground at the site of WTC 7 as hot as the ground under WTC 1 and 2?

And the New York Times wrote that partly EVAPORATED steel beams were found at WTC 7. But normal office and diesel fires are not NEARLY hot enough to evaporate steel. Hydrocarbon fires fueled by diesel (which was apparently stored at WTC 7) and normal office materials cannot evaporate steel. Steel does not evaporate unless it is heated to at least 5,000 degrees Fahrenheit. Everyone agrees that fires from conventional building fires are thousands of degrees cooler than that.

Pre-Knowledge

 

 

And why didn’t NIST address the obvious pre-knowledge by everyone around and well in advance that 7 was going to come down?

Experts

 

 

And why didn’t NIST address what these experts say?:

  • Kamal S. Obeid, structural engineer, with a masters degree in Engineering from UC Berkeley, of Fremont, California, says:

“Photos of the steel, evidence about how the buildings collapsed, the unexplainable collapse of WTC 7, evidence of thermite in the debris as well as several other red flags, are quite troubling indications of well planned and controlled demolition”

  • Ronald H. Brookman, structural engineer, with a masters degree in Engineering from UC Davis, of Novato California, writes:

“Why would all 47 stories of WTC 7 fall straight down to the ground in about seven seconds… ? It was not struck by any aircraft or engulfed in any fire. An independent investigation is justified for all three collapses including the surviving steel samples and the composition of the dust.”

  • Graham John Inman, structural engineer, of London, England, points out:

“WTC 7 Building could not have collapsed as a result of internal fire and external debris. NO plane hit this building. This is the only case of a steel frame building collapsing through fire in the world. The fire on this building was small & localized therefore what is the cause?”

This article was posted: Friday, August 22, 2008 at 3:11 am





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