WTC and thermite

[Aurel]

Last week I was at the Materials Research Society Conference in San Francisco.
There was a talk about the collapse of the WTC towers. (see here).

The expert giving the talk pointed out this:

"In the end, the quality of the steel was not implicated in the collapse of the buildings. Gayle also pointed out that idea that the steel melted was erroneous, because the building fire temperature was only about half the steel’s melting point."

Then, there is this footage showing molten metal falling from the fire, which suggests the use of thermite.



And the official verision from NIST sounds like BS to me:



Tomorrow will be a rainy day. Plenty of time to revisit this issue. I don`t care how many times it has been debunked already, the debunking has still not convinced me.

Aurel

[trekkor]

The whole situation that day was very sad. I cried in disbelief.
I remember exactly where I was and what I was doing.

If it was carried out by the "trusted" members of government that would not surprise me. I have no informed opinion.


KT

[Rearden]

The administration can't even fire a few judges without it becoming a scandal, but they're able to smoothly pull off the conspiracy of all time in a few months with thousands of conspirators never exposing a sliver of evidence. Ridiculous moonbat madness.

[island911]

Originally posted by Noah
That's because you're a nutcase.

Long suspected, now confirmed. (w/o a doubt)

Is a nutcase anything like a ballsack?

[nostatic]

butt darts

[Dantilla]

Originally posted by Aurel
[B
I don`t care how many times it has been debunked already, the debunking has still not convinced me.

Aurel [/B]

That's because you made up your mind first, and then started looking for some way to justify your desision.

Not exactly what most would consider being open minded.

[Aurel]

Originally posted by Dantilla
That's because you made up your mind first, and then started looking for some way to justify your desision.

Not exactly what most would consider being open minded.

I had ample time to make up my mind and look at both sides of the story. It did not happen overnight. I am more open minded than most people in fact. If you show me how steel could have melted during the collapse of the towers, I`ll listen and change my "desision" (misspelling intentionally left for character assassination purposes ).

Aurel

[Steve Carlton]

100 times more unlikely a conspiracy like that could be successful than likely they would do it. So, maybe ten trillion to one. Get real.

[john70t]

Aviation fuel doesn't keep burning underground for 8 days at 1500 degrees. Does drywall?

A open mind is one that can accept the possibility of something(even if remote)-based on personally observed evidence. For example, the flat earth looks like it ends at the horizon, but I have witnessed enough evidence to believe 99.9% it is round.

[Flatbutt1]

Don't know about Av fuel, but coal has been burning underground in Pennsylvania for years.

[red-beard]

The steel didn't melt during the collapse. You do not have to melt steel to weaken it. Mearly heating it will cause enough softening to allow the collapse of the floors that were on fire.

Bldgs are design with static forces in mind. Once the building starts downwards, the force required to stop the building is much much larger. The bluilding isn't designed for those forces. Not only that, but as it collapsed, it picked up speed.

And why didn't the building fall sideways? It would take a great force to do that! The force acting on the building (gravity) is straight down. Once it is free, it will start moving in the direction of the force. To have them fall sideways would have required some sideways force.

[kach22i]

red-beard, you are right on all counts. I don't know what is in the video close up though, looks like a steel mill in action. I worked in one (1979 - Zug Island) and should know, I'm also an architect.

Any ideas on the molten pools of steel and the underground fire?

ttp://www.nzsteel.co.nz/go/about-new-zealand-steel/history

[Joeaksa]

Originally posted by Dantilla
That's because you made up your mind first, and then started looking for some way to justify your desision.

Not exactly what most would consider being open minded.

Sure hit that nail on the head. For those of us who were there on 9/11 and watched the planes fly into the WTC (I saw the second one hit) there is no doubt what happened.

Guess people have far too much time on their hands to think up things like this.

[john70t]

So the possibility that the terrorists smuggled thermite onto the plane or into the WTC is completely nul and void?

I hope this kind of thinking isn't "protecting" me.

[trekkor]

What is thermite and what does it do?

thanks,

KT

[Aurel]

Originally posted by Joeaksa
Sure hit that nail on the head. For those of us who were there on 9/11 and watched the planes fly into the WTC (I saw the second one hit) there is no doubt what happened.

Guess people have far too much time on their hands to think up things like this.

So you saw a plane hit the second tower? Big deal. My wife did too. Everybody did. This has never been put in question. The question is, was this sufficient to make the towers collapse, or did it require the help of thermate to happen. And if not, what caused so much steel to melt?

Aurel

[the]

Originally posted by Rearden

The administration can't even fire a few judges without it becoming a scandal, but they're able to smoothly pull off the conspiracy of all time in a few months with thousands of conspirators never exposing a sliver of evidence. Ridiculous moonbat madness.

Should have made the buildings out of Rearden Metal.

[red-beard]

In the gas turbine world, the maximum firing temperature for the 1st stage nozzle is 1750 with solid steels and no cooling. This is with an overhaul life of 20,000 hours and an inspection interval of 4000 hours. You can raise the operating temp to 1800, but the inspection and life drop by 50%. At one time, peak reserve was offered which raised the temp by 100 degrees. Turbine life is now 5 hours. 5. That is 1900 degrees.

Stochiometric firing of fuel oil (Kerosese/Diesel, etc) can produce temperatures in the 3500-3600 region, with proper atomization. We have always had to introduce extra air, and mix it beofre it ran through the turbine section. These days, we actually limit the flame front temperature to a mixed 2700, so that NOx will not be produce.

[Aurel]

Originally posted by trekkor
What is thermite and what does it do?

thanks,

KT

Thermite is Fe2O3 + Al -> Al2O3+ molten steel.

Once you ignite the powder mixture (with a plane fuel fire for instance), the reaction becomes instantly so exothermic that it melts steel.

Aurel