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Originally posted by twitchy
Two or three terms for you, lateral ejection, pulverization, and squibs.
Originally posted by Psychoses
As somebody who works with steel in heavy fabrication, it irritates me when people insist that the fuel caused the steel to fail.
Originally posted by Psychoses
As somebody who works with steel in heavy fabrication, it irritates me when people insist that the fuel caused the steel to fail.
Steel looses much of its strength long before it reaches its melting point.
This is true to a certain extent. A piece of steel flat bar has 2 sides. If you heat the piece of flat bar until it is red hot it will bend a lot easier than when it is cold, but the supports that held WTC up were not flat bar. They were box section, and designed to be extremely strong. The WTC supports had 12 sides. No way were these ever going to bend, hot or not, and that's why the engineers used them.
Originally posted by Psychoses
originally posted by HowardRoark
That is why they apply fireproofing to steel. Fireproofing is not there to keep the steel from burning , it is there to insulate the steel from the high temperature of the fire.
Steel has a fire rating of forever because it doesn't burn.
Originally posted by Psychoses
Now to apply a simple law of physics. How strong is that pencil on the desk in front of you. If you pick it up in you hands and squeeze the middle it will snap. Not very strong. Now take another pencil and stand it upright on the desk. With your other hand push straight down and try to break it. Pencil is now incredibly strong and can take an extreme amount of downward pressure. Bear in mind that the wall thickness of the box section columns in WTC was nearly 4in at the base.
The towers were the first buildings to use a innovative technique to fireproof the core area. all buildings up until then, and most smaller buildings today use masonry construction in the core areas to provide stiffness and fireproofing to the core area. What they did in the WTC was to use double layers of thick drywall panels to protect the core area. This worked because the building derived it's stiffness to wind-loading from the box grid of the exterior walls, not from the core area.
Originally posted by SMR
The towers were the first buildings to use a innovative technique to fireproof the core area. all buildings up until then, and most smaller buildings today use masonry construction in the core areas to provide stiffness and fireproofing to the core area. What they did in the WTC was to use double layers of thick drywall panels to protect the core area. This worked because the building derived it's stiffness to wind-loading from the box grid of the exterior walls, not from the core area.
So then.How did the One Meridian Plaza (built 1968-1973) not fall due to an almost 19hr inferno?
How about the tower in CARACAS, Venezuela, Oct. 18, 2004 that I posted above (built 1976) not falling after 17hr infirno?
Im just try to see how steel/heat/contruction differences match up here.
You have WTC that fell due to fire.Yet was so innovative in construction.
Now take the other towers and compare.Either way,if they were built with or without this innovative construction,it makes the case of WTC look suspicious no?
If built with the same type of innovative construction,why did they not fall from fire.If not built from the same innovative contrustion,how did they not fall from fire?See what Im saying?
Originally posted by SMR
The towers were the first buildings to use a innovative technique to fireproof the core area. all buildings up until then, and most smaller buildings today use masonry construction in the core areas to provide stiffness and fireproofing to the core area. What they did in the WTC was to use double layers of thick drywall panels to protect the core area. This worked because the building derived it's stiffness to wind-loading from the box grid of the exterior walls, not from the core area.
So then.How did the One Meridian Plaza (built 1968-1973) not fall due to an almost 19hr inferno?
How about the tower in CARACAS, Venezuela, Oct. 18, 2004 that I posted above (built 1976) not falling after 17hr infirno?
Im just try to see how steel/heat/contruction differences match up here.
You have WTC that fell due to fire.Yet was so innovative in construction.
Now take the other towers and compare.Either way,if they were built with or without this innovative construction,it makes the case of WTC look suspicious no?
If built with the same type of innovative construction,why did they not fall from fire.If not built from the same innovative contrustion,how did they not fall from fire?See what Im saying?
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Originally posted by HowardRoark
Think about what happened when the planes hit. Thousands of tons of debris slammed into those walls at high speed
Originally posted by HowardRoark
And it irritates me when people remain willfully ignorant of the principles of chemistry, physics, and engineering.
It doesn't matter how many sides are involved, if the entire column is surrounded by fire. Even under normal conditions, the heat of a fire can cause the columns to shorten and buckle. Add to this the fact that the structure was severely compromised and even a small amount of buckling can have disastrous consequences.
Originally posted by HowardRoark
The columns of the WTC towers were restrained from bending by the floor slabs. WHen the floor slabs were wiped out by the impact, those columns were also bent. without the floor slabs to hold them in place, the steel began to creep and deform. Add the high temps from the fire, and the failure was inevitable.
Originally posted by HowardRoark
First off who cares who thick the columns were at the base? The collapse did not initiate from the base, it initiated from the impact zone.
Originally posted by Frosty
Still, no one has bothered to come around and explain how a sub-ground level bomb could collapse the world trade centers at the point of impact by the planes. I will stick to the official reports.
Originally posted by Psychoses
Originally posted by Frosty
Still, no one has bothered to come around and explain how a sub-ground level bomb could collapse the world trade centers at the point of impact by the planes. I will stick to the official reports.
Which "official" report are you referring to?
What are your conclusions as to why there were thermal pockets?
Originally posted by HowardRoark
Originally posted by SMR
The towers were the first buildings to use a innovative technique to fireproof the core area. all buildings up until then, and most smaller buildings today use masonry construction in the core areas to provide stiffness and fireproofing to the core area. What they did in the WTC was to use double layers of thick drywall panels to protect the core area. This worked because the building derived it's stiffness to wind-loading from the box grid of the exterior walls, not from the core area.
So then.How did the One Meridian Plaza (built 1968-1973) not fall due to an almost 19hr inferno?
How about the tower in CARACAS, Venezuela, Oct. 18, 2004 that I posted above (built 1976) not falling after 17hr infirno?
Im just try to see how steel/heat/contruction differences match up here.
You have WTC that fell due to fire.Yet was so innovative in construction.
Now take the other towers and compare.Either way,if they were built with or without this innovative construction,it makes the case of WTC look suspicious no?
If built with the same type of innovative construction,why did they not fall from fire.If not built from the same innovative contrustion,how did they not fall from fire?See what Im saying?
Comparing different buildings with different structural designs is like comparing apples to oranges.
you did not read my post carefully. MOST buildings are constructed similer to the Meridian plaza building or the Caracas building. This is NOT the same style of construction that was used in the WTC.
[edit on 24-11-2004 by HowardRoark]
Originally posted by SMR
As I have noted,the fuel did NOT and CANNOT burn hot enough to melt steel.
Originally posted by Frosty
Originally posted by SMR
As I have noted,the fuel did NOT and CANNOT burn hot enough to melt steel.
True, but during the initial blast the concrete structures were discimated to rubble and large debris, and the steel beams must have been melted to some degree. But as stated many times, the steel itself "does not need to be liquified" in order for it to lose strength. There was evidence of molten steel found at the base of at least one of the WTC, we know this for a fact.
Originally posted by Frosty
Originally posted by SMR
As I have noted,the fuel did NOT and CANNOT burn hot enough to melt steel.
True, but during the initial blast the concrete structures were discimated to rubble and large debris, and the steel beams must have been melted to some degree. But as stated many times, the steel itself "does not need to be liquified" in order for it to lose strength. There was evidence of molten steel found at the base of at least one of the WTC, we know this for a fact.
Originally posted by billybob
Originally posted by Frosty
Originally posted by SMR
As I have noted,the fuel did NOT and CANNOT burn hot enough to melt steel.
True, but during the initial blast the concrete structures were discimated to rubble and large debris, and the steel beams must have been melted to some degree. But as stated many times, the steel itself "does not need to be liquified" in order for it to lose strength. There was evidence of molten steel found at the base of at least one of the WTC, we know this for a fact.
must have been melted to some degree. that's scientific. exactly how many degrees to melt steel?
my favourite leap in logic is, 'does not need to be liquified(AKA molten), in order to lose it's strength.' and then, next sentence, 'there was evidence of molten steel'. so if it didn't need to be molten to lose it's strength, which is the logic behind it falling like that without the melting point of steel being reached, then HOW DID THE STEEL MELT? it was molten WEEKS later. that means it was a BIG POOL OF MOLTEN STEEL. the law of thermodynamics DEMANDS that there be enough potential energy to turn that much steel into liquid, good luck with that one disinfo pros.
but wait! how much molten steel was there? how many tons? where are all the beams that weren't melted? where are the beams that were?
#ing disappeared, that's where.
perhaps there is still enough SOLID evidence to prove that the official house of cards is about to pancake.
it really is a case of fairly simple physics.
Originally posted by DrSpeedo
Watch the movie 911 in plane site, there are som CNN-pictures that shows a large smokestack rising fr�n the WTC-ground while both towers are still standing. That indicates that there were an explosion in the bottom segments before the collapse.
www.thepowerhour.com...
Originally posted by Frosty
I'm not saying it didn't melt, I'm saying it didn't needed to be melted........
(snip) ..... maybe it melted after it fell, who knows for sure?