NIST Video: Why the Building (WTC7) Fell

The National Institute of Standards and Technology (NIST) conducted an extensive three-year scientific and technical investigation of the Sept. 11, 2001, collapse of the 47-story World Trade Center building 7 (WTC 7) in New York City. This video describes the results of this study, which concluded that fires on multiple floors in WTC 7--which were uncontrolled but otherwise similar to fires experienced in other tall buildings--caused an extraordinary event. Heating of floor beams and girders caused a critical support column to fail, initiating a fire-induced progressive collapse that brought the building down.

For more info visit:
http://www.nist.gov/public_affairs/factsheet/wtc_qa_082108.cfm

Category:

Science & Technology

Tags:

• NIST
• conspiracy
• WTC7
• 911
• 911truth
• debunking911
• World
• Trade
• Center
• collapse
• fire
• New
• York
• investigation
• progressive
• terrorism
• September
• 11
• building
• codes
• structures
• computer
• model
• columns
• explosives

[StevenM818]

It appears NIST released 2 versions of the footage seen at 0:15 . Through a recent FOIA they released a long & short version of the same WTC-7 "collapse" video. In the short version (CBS-Net Dub5 09) there's an explosion just before the east penthouse drops. In the longer version (CBS-Net Dub7 47) the explosion has mysteriously been removed. I have the short version uploaded here: watch?v=0j8XN3iKLak

Wear headphones while viewing, or turn up your speakers. Also see description for more details.

[usnistgov]

@StevenM818

The video footage released under the FOIA request was copied from the original video exactly as it was received. The video and audio were not edited in any way by NIST. NIST received video footage from many different sources and audio levels may be different between these sources.

[MegaGuarapo99]

Why go to a university to get an engineering or physics degree when you can just look at TV footage of the collapse of World Trade Center buildings and become an instant Ph.D., complete with experience in strength-of-materials, combustion, explosives, dynamics, the ability to do 3D finite element calculations mentally, as well uncover sabotage plots and the national security secrets of governments? It sure beats studying math, reading textbooks, and actually thinking; reality is too much work.

[rubenpena]

This video is a joke. The US Govt. & NIST are putting out dis-information in an attempt to distort & manipulate the truth, and confuse the public. In addition to all the comments below thus far, this video ALSO doesn't explain the following:

1) why the lease owner of WTC 7, Larry Silverstein, gave the US Govt & NYC authorities permission to "Pull It", i.e. execute a preplanned controlled demolition to intentionally collapse the building. Why do this?

..... to be continued .....

[Psy0psAgent]

Dog tags dont melt when when a plane crashes and there are no family members of passengers. Have a nice day.

[ThePeage]

(3) If this is true:

1) Please could you explain why NIST dismissed ANY and ALL “circumstances”, with the exception of fire, based on the absence of a single blast loud enough to indicate the use of the explosives used in conventional demolition?

2) Did NIST ever release the results of the “additional computer analysis” that was done in order to satisfy the team (and the building community) that this was the case?

[ThePeage]

(2) have led to a complete loss of the building if fire or damage from the falling debris of the nearby WTC 1 tower were not factors. The investigation team concluded that the column’s failure UNDER ANY CIRCUMSTANCE would have initiated the destructive sequence of events.”

(My caps) (3)

[ThePeage]

@usnistgov

In para 3 at h t t p : / / nist. gov/ el/wtc7 final_112508. c f m (remove spaces) NIST states:

“In response to comments from the building community, NIST conducted an additional computer analysis. The goal was to see if the loss of WTC 7’s Column 79—the structural component identified as the one whose failure on 9/11 started the progressive collapse—would still (2)

[911debunkerschannel]

World Trade Center 7: An Engineered Collapse - A film based largely on the research and information from the book, The Mysterious Collapse of World Trade Center 7: Why the Official Final Report About 9/11 is Unscientific and False

/watch?v=KHxQ6yzU1qo

[RavenPrecept]

@HyperColours You must start the timing when the collapse begins. Correctly the buildings destruction started when the fires started. Therefore the collapse took over 8 hours, hardly free fall.

[RonBurgundy161]

@MrKoenig1985 Yes they do. Debris ignited fuel storage tanks within the building.

[MrKoenig1985]

NIST didn't know the exact ignition source for the fires in WTC7 after collapse of WTC1, like for the 104th floor fire at the west face of North Tower. And why the sprinkler systems didn't work in WTC7 and in the upper region of WTC1, above the impact zone, because the 104th floor sprinklers were served by the water reserve tank on mechanical floor 108-110.

[MrKoenig1985]

@The911watch

It's called correctly freefall acceleration, not speed.

[The911watch]

NIST never explained how this building could have collapsed in free fall speed. The only way that is possible is with explosivs.

NIST is corrupt.