gambit
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Easy...if you can prove how wtc7 fell down, ill agree it was not an inside job.
Fire Protection Engineering Archives - Historical Survey of Multistory Building Collapses Due to Fire
This is a concrete structure. Concrete exhibit different behaviors than steel when exposed to fire. Concrete is actually FAVORED over steel if fire is the sole consideration.A fire-initiated full collapse of a textile factory occurred in Alexandria, Egypt, on July 19, 2000.6 This 6-story building was built of reinforced concrete, and its fire started at about 9 a.m. in the storage room at the ground floor. Fire extinguishers were nonfunctional, and the fire spread quickly before the firefighters could arrive. An electrical short-circuit accelerated the fire spread. At about 6 p.m., nine hours after the start of the fire, when the blaze seemingly was under control and subsiding, the building suddenly collapsed, killing 27 people. Figure 3 shows a photograph of this collapse.
http://www.mace.manchester.ac.uk/pr...strucfire/materialInFire/Concrete/default.htm
Steel is used for strength versus material. There are trade-offs. So if a reinforced concrete structure can collapse due to fire, so can a steel structure. Further, this reinforced structure is only 6 stories tall. WTC7 was 52 tall.Concrete has a low thermal conductivity (50 times lower than steel) and therefore heats up very slowly in a fire. It is the low thermal conductivity that provides good inherent fire resistance of concrete structures.
No one said anything about melted steel. Fact...Steel loses half of its strength at about half of its melting point. Steel also expand when heated.Are you a professional, it is not us that created the conspiracy theories, it were the Americans that did. Go look at the temp required to melt steel, once you digest that we can move on. They say only Muslims are brainwashed
Boiling point
So if a steel column is exposed to fire long enough, and if it is a supporting structure, the weight from above will accelerate the steel column's collapse. The expansion have no place to go, just like the sun heated railroad tracks in the source above.Workers repair heat-warped railroad tracks in Watauga, Texas, where 13 cars derailed Aug. 2, 1998. Texas' blistering heat was blamed for ``sun kinks'' -- warped stretches of railroad track -- that caused two unrelated derailments in North Texas. Workers are riding the rails to find any more rough areas. AP Photo/LM Otero.
You sure about that? Source? What do you know about surveillance cameras regarding their technology and deployment?We got so many videos of trade center, how come there isn't a video for pentagon?? that place is covered with cameras??
This is one of the stupidest line of arguments regarding Sept 11, 2001. The vast majority of the videos of the WTC towers came from non-governmental sources. That is undeniable. News camera footage are spur of the moments events, very seldom planned like an announcement from the government when there will be a press briefing. We have no videos of when the first aircraft struck the first tower. Why? Because no one expected it. So when the first tower was smoking from the impact site, OF COURSE all news cameras would be focused on the WTC area. No one expected the Pentagon to be a target. The Pentagon was IN ANOTHER CITY.
World Trade Center towers = NEW YORK CITY in the State of New York
The Pentagon = ARLINGTON in the State of Virginia
What happened to CRITICAL THINKING?
Yes we are...Care to try again?A few ppl managed to high jack planes with knives?? dam Americans sure are puccies.
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