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A Structural Reevaluation of the Collapse of World Trade Center 7

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posted on Sep, 13 2019 @ 08:28 AM
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originally posted by: carsforkids
a reply to: neutronflux




So? To you? Building design has nothing to do with how a building reacts to a fire? Your saying an all steel structure with deficient fire insulation vs a building built with reinforced concrete columns are going to provide the same building performance?




The pic of building 7 above that large quote you posted. Shows some flames
jetting up thru the curtain wall.




You mean the buiding you kept claiming wasn't on fire?





posted on Sep, 13 2019 @ 04:05 PM
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originally posted by: neutronflux
a reply to: Gandalf77

To cut steel by pressure wave, a specific pressure must be created. That specific pressure is going to result in the same sound level regardless of explosive type cutting steel by pressure wave.

The point of using nano thermite is its more of an explosive than cutting charge. If the nano thermite is cutting steel by pressure wave, then that is going to result in the same loudness as any other explosive using a pressure wave to cut steel.

Thermite burns slow. With no guarantee columns would be cut at the same rate. Might result in cold welds when cutting columns vertically. Whit no means to misalign columns to insure a rapid collapse initiation.

1000 pounds of thermite couldn’t even finish cutting a SUV in half horizontal. Doubtful if it would be effective against vertical columns for a rapid onset of collapse.



MythBusters Destroy A Car Using 1000 Pounds Of Thermite

m.youtube.com...


With the flashing, the large amounts of smoke, and the heat, it would be obvious if thermite was cutting at the exterior columns near windows and the facade. Flashing in the windows. Large amounts of flame and smoke. Cutting and burning through the facade.

Thermite makes UV light.

AE truth said the fires were never hotter than normal office fires. Is that false? I would take it that rules out floor to floor column to column thermite fueled fires burning at 3000 degrees Fahrenheit.

There is zero evidence of pyrotechnics bringing down the WTC.


Take a look at this video and read the article on the same page:
Steel sulfidation - WTC7

- A thermitic reaction works differently than something like RDX; it's an incendiary, so the thermal heating cuts, rather than blasts. The initial explosions from a thermitic reaction wouldn't be as loud.

- In the case of WTC7, there hasn't been an adequate explanation for the presence of elemental sulfur in the melted metal samples. (NIST tried claim there wasn't evidence of that, but eyewitness accounts suggest otherwise.)
Adding sulfur to thermite creates thermate, which can burn metals at lower temps.

Anyway, the video is interesting and speaks to a number of the points we've been discussing.
edit on 13-9-2019 by Gandalf77 because: typo


ETA: There does appear to be a difference in the properties of thermate (thermite + sulfur) and nanothermite (superthermite). Thermate does the cutting at lower temps, but it sounds like nanothermite can be tailored and, according to one source, produce blast waves up to Mach 3.
edit on 13-9-2019 by Gandalf77 because: clarification



posted on Sep, 13 2019 @ 04:42 PM
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a reply to: Gandalf77

You


A thermitic reaction works differently than something like RDX; it's an incendiary, so the thermal heating cuts, rather than blasts. The initial explosions from a thermitic reaction wouldn't be as loud.


You don’t say.

Maybe that’s why I posted this? And linked to a video of 1000 pounds of thermite working on a 4000 SUV?

www.abovetopsecret.com...

“Thermite burns slow. With no guarantee columns would be cut at the same rate. Might result in cold welds when cutting columns vertically. Whit no means to misalign columns to insure a rapid collapse initiation.

1000 pounds of thermite couldn’t even finish cutting a SUV in half horizontal. Doubtful if it would be effective against vertical columns for a rapid onset of collapse.



MythBusters Destroy A Car Using 1000 Pounds Of Thermite
m.youtube.com...


With the flashing, the large amounts of smoke, and the heat, it would be obvious if thermite was cutting at the exterior columns near windows and the facade. Flashing in the windows. Large amounts of flame and smoke. Cutting and burning through the facade.

Thermite makes UV light.

AE truth said the fires were never hotter than normal office fires. Is that false? I would take it that rules out floor to floor column to column thermite fueled fires burning at 3000 degrees Fahrenheit.”

You again


- In the case of WTC7, there hasn't been an adequate explanation for the presence of elemental sulfur in the melted metal samples. (NIST tried claim there wasn't evidence of that, but eyewitness accounts suggest otherwise.)
Adding sulfur to thermite creates thermate, which can burn metals at lower temps.


A specific quote by you, “Adding sulfur to thermite creates thermate, which can burn metals at lower temps.“

The above seems false




Thermate

en.m.wikipedia.org...

Because thermate burns at higher temperatures than ordinary thermite,[1] it has military applications in cutting through tank armor or other hardened military vehicles or bunkers


2nd source that must be source for Wikipedia


Thermate

www.revolvy.com...

Because thermate burns at higher temperatures than ordinary thermite,[1] it has military applications in cutting through tank armor or other hardened military vehicles or bunkers


Also from www.revolvy.com, the composition of military thermite.



www.revolvy.com...

The composition by weight of Thermate-TH3 (in military use) is 68.7% thermite, 29.0% barium nitrate, 2.0% sulfur and 0.3% binder (such as PBAN).



For every 1000 of thermate, there would be 20 pounds of sulfur. But there should be 290 pounds of barium nitrate. So any unusually high concentrations of barium?




edit on 13-9-2019 by neutronflux because: Added and fixed



posted on Sep, 13 2019 @ 04:47 PM
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a reply to: neutronflux

Thanks and good points. I was going by the thermate explanations of that video. I'll look at your sources and watch again. Seems like they mentioned it burns at a lower temp, but I may have misunderstood or misheard something. That lower temp could be relative to something else.
edit on 13-9-2019 by Gandalf77 because: clarification



posted on Sep, 13 2019 @ 04:57 PM
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a reply to: Gandalf77

More here



Can thermate really melt tank armors?
www.quora.com...


Article doesn’t allow cut and paste.

Claims thermite burns at 2200-2500 Celsius
Claims military thermate burns at 2700-3000 Celsius.



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