It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
stated at the 2008 NIST technical briefing by Shyam Sunder.
"the phenomenon that we saw on 9/11 that brought this particular building down was really thermal expansion, which occurs at lower temperatures."
originally posted by: soundstyle
a reply to: cardinalfan0596
.if the steel window frames are heating up enough to warp and shatter the windows.
who says they heated up....YOU did.
Mr. Jennings and Hess said bombs blew them out....and in some videos, WE SEE the perfectly broken two rows exactly where he states it occurred, with NO broken windows above or below those floors.....now HOW does 220 stories of vertical free falling tower debris MISS all those other windows to ONLY break two horizontal rows?????...Hmmm
You really should watch the videos. They show windows shattering with absolutely NO explosions going on.
"the phenomenon that we saw on 9/11 that brought this particular building down was really thermal expansion, which occurs at lower temperatures."
Because it was an act of war. Not a "crime". And, you miss something, I said the damage had " a little" to do with the collapse. Not that it had "little" to do with it. Yes it is splitting hairs, but one little letter "a" changes the whole meaning, and I do not want anyone getting even more confused than they already are.
NCSTAR1A p.39/130
"the damage from the debris from WTC 1 had little effect on initiating the collapse of WTC 7."
originally posted by: cardinalfan0596
a reply to: Salander
Because it was an act of war. Not a "crime". And, you miss something, I said the damage had " a little" to do with the collapse. Not that it had "little" to do with it. Yes it is splitting hairs, but one little letter "a" changes the whole meaning, and I do not want anyone getting even more confused than they already are.
Barry Jennings was inside WTC7 after the impact of the WTC collapsed.
you dont believe that. In your world, anything that sounds like an explosion MUST be a bomb.
You can start here:
civil.iisc.ernet.in...
Thermal Expansion Myths debunked
To ensure that fire protection is properly specified, the project’s fireproofing schedule should include as the first note that: “All steel framed floors and roofs shall be considered thermally restrained.”
www.iafss.org...
www.iafss.org...
nptel.ac.in...
Now bob, you wanted science to explain thermal expansion to you? Here you go.
"the phenomenon that we saw on 9/11 that brought this particular building down was really thermal expansion, which occurs at lower temperatures."
You really should watch the videos. They show windows shattering with absolutely NO explosions going on.
WTC7 was a byproduct of the events. So, no mention.
NCSTAR1A p.39/130
"the damage from the debris from WTC 1 had little effect on initiating the collapse of WTC 7."
[NCSTAR1A-3.2]"It is likely that much of the burning took place beyond the views of the windows"
8. Why did WTC 7 collapse, while no other known building in history has collapsed due to fires alone?
The collapse of WTC 7 is the first known instance of a tall building brought down primarily by uncontrolled fires. The fires in WTC 7 were similar to those that have occurred in several tall buildings where the automatic sprinklers did not function or were not present. These other buildings, including Philadelphia's One Meridian Plaza, a 38-story skyscraper that burned for 18 hours in 1991, did not collapse due to differences in the design of the structural system (see the answer to Question 9).
Factors contributing to WTC 7's collapse included: the thermal expansion of building elements such as floor beams and girders, which occurred at temperatures hundreds of degrees below those typically considered in current practice for fire-resistance ratings; significant magnification of thermal expansion effects due to the long-span floors in the building; connections between structural elements that were designed to resist the vertical forces of gravity, not the thermally induced horizontal or lateral loads; and an overall structural system not designed to prevent fire-induced progressive collapse.
I posted engineering reports that specifically investigate THERMAL EXPANSION of materials exposed to fires.
Just because you are too lazy to read them does not mean I didnt answer your question. Quit being lazy and start reading. I know you didnt.
The FAQ is for those, like you, too lazy to read the actual report.
Factors contributing to WTC 7's collapse included: the thermal expansion of building elements such as floor beams
by Shyam Sunder and his 2008 HYPOTHESIS crew at NIST technical briefing
"the phenomenon that we saw on 9/11 that brought this particular building down was really thermal expansion, which occurs at lower temperatures."
"NIST is withholding 68,246 files. These records are currently exempt from disclosure. All input and results files of the ANSYS 16 story and the LS-DYNA 47-story global collapse model that were used to simulate sequential structural failures leading to collapse."
quite frankly it is annoying, its annoying that with every 9/11 thread i come to now you dominate the discussion with your abrasive, arrogant and aggressive posting style by turning every 9/11 thread into yet another demonstration of your lack of understanding as to what happens to steel when it gets hot.