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Politics : Bush-The Mastermind behind 9/11?
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To: Sidney Reilly who wrote (2122)8/26/2003 3:16:28 AM
From: Lazarus_Long  Read Replies (1) of 20039
 
the fires in the twin towers could not have been more that 2000 degrees in temp given the fuel available to burn (jet fuel and building) yet it would take 4,000 degrees to melt the steel (steel is made in special furnaces designed to get that unusually high temperature) and cause the building to collapse at all (much less collapse in such a way that it looked like an expert demolition job, straight down).
Wrong.

Adiabatic flame temperature of Kerosene = 1727C
That's 3141 degrees F.
216.239.51.104
You really, REALLY ought to go through that above link in detail. It does a good job of blowing your entire theory that the commercial jet crash could not have destroyed the WTC towers.

But, continuing, your guess(?) at the temp of the flame is too low- -by 35%.

Also, this establishes that jet fuel is a type of kerosene.
chevron.com
ASTM D 1655 The Standard Specification for Aviation Turbine Fuels includes specifications for
three commercial jet fuels: two kerosene-type fuels (Jet A and Jet A-1) and a wide-cut fuel (Jet B).1
Jet A is used for almost all domestic commercial aviation flights in the United States.

The melting temperature of high strength construction steel is 1540 degrees centigrade- -maximum.
io.tudelft.nl

So clearly the temperature of the flame was sufficient to melt it.

In fact, BECAUSE OF THAT FACT, the beams in buildings have a coat of insulation applied to them- -BECAUSE THEY CAN ENCOUNTER FLAMES HOT ENOUGH TO MELT THE STEEL.

What happened? Two things: the impact of the plane jarred loose and knocked off part of the insulation. And also the insulation will only protect the steel for a while. That while is not an hour of exposure to flame.

Another point: it is not necessary to actually melt a material under compression to cause it to collapse. As its temp goes up, it weakens; at some point it collapses. Is a stick of butter that's been out at room temp for a few hours as strong as one right out of the freezer?

Here:

types of steel
% OF STRENGTH AT ROOM TEMPERATURE

Temperature Mild Cold drawn High strength
(degree C) Steel prestressing alloy bars
20 100 100 100
100 102 97 98
200 115 94 102
300 112 80 97
400 82 55 82
500 55 34 60
600 30 16 38
700 20 8 20
ou.edu
So steel has lost 80% of its room temp strength by 700 c which is 1400 F which is less than the combustion temp of Kerosene.

So much for that theory.

And it goes on and on, the evidence.

I think you'd better answer this. I intend to post it to some of your fellow conspiracists and to some who think the lot of you are nuts who will desperately latch onto ANYTHING to attack Bush and promote your crazy, ill founded, poorly researched theories. Or make something up out of whole cloth. I'm also going to PM it to some people so they can have it available if you guys try to push this theory again.

And I'm really not impressed with the diligence and honesty of you people. It took me less than 10 minutes of googling to find that.

Your motives and intelligence are questionable.
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