Charlie Sheen's 911 Video/Message to Obama~

[BuckarooBanzai]

Firefighters cut holes in the roof of a building to allow hot gasses to escape.

Forges use holes at (or below) the level of the fire to introduce air (and oxygen) to increase the burn rate and the heat produced.

The planes introduced holes - and massive amounts of fuel - at the level of the fire. The holes introduced air and drastically increased the temperature above them. The hottest part of that fire wasn't on the levels where it was burning. The hottest part of that fire was well above the floors where the fire was burning.

There were no holes in the roof to exhaust said heat. The hottest part of the fire was in the upper structure sections - where no heat could escape, though burning jet fuel and the chimney effect of the holes kept pouring heat upwards.

The upper floors didn't so much collapse as melt.

The hottest place in any flame is not at the point of combustion, it is well above it. You don't get a needle red hot by holding it right next to the flame, you get red hot by holding the needle above the flame, near the terminus of visible combustion.

Once that top floor got hot enough to pancake, it carried all that heat (and energy) straight down - onto the floors below it.

The collapse looked like a controlled demolition because that effect is exactly what controlled demolitions seek to accomplish - the energy of the building falling contained and subsequently used to bring the rest of the building down.

Saying this IN NO WAY means I don't believe this whole adventure wasn't actively ignored (and perhaps even assisted) by elements of the US Government.

[TVCasualty]

Well, I don't mean to sound like a one-trick pony, but even after all the various explanations I've heard about why the impacts and fires could've dropped both towers I've still never heard anyone address why they fell straight when both the impacts and the fires were not only off center, they were way off center. Your argument about heat rising (it mostly rises, but not all of it does) and the location of holes in a building either dissipating heat or increasing it makes perfect sense, but "up" in this case is not toward the superstructure.

I'm sure the heat generated by the fire would also move laterally via conduction and radiation, but it would be inhibited in doing so by the fireproofing that coated the steel, the concrete that forms the actual floors, any fire sprinklers that may have been working (never heard any reports about that one way or the other), and to a small extent even the thermal mass of the superstructure itself. That all seems to me like it would take substantially longer for the fire to overcome than it did.

[tenjin]

Originally Posted by TVCasualty

I'm sure the heat generated by the fire would also move laterally via conduction and radiation, but it would be inhibited in doing so by the fireproofing that coated the steel, the concrete that forms the actual floors, any fire sprinklers that may have been working (never heard any reports about that one way or the other), and to a small extent even the thermal mass of the superstructure itself. That all seems to me like it would take substantially longer for the fire to overcome than it did.

Ya wiki says the south tower was hit 2nd and fell first only burning for 56 minutes. It just seems like 56 minutes isn't long enough time to cause it to come pancaking down, especially considering all the things TV mentioned like all the fireproofing, concrete, sprinklers, etc. But then again I don't know much about skyscraper engineering. But this must mean it was super hot to cause it to collapse after that many minutes. Kinda like the videos you see of what looks like molten metal dripping out from the building. And about WTC 7 wiki says

When the north tower collapsed, debris heavily damaged the nearby 7 World Trade Center (7 WTC) building. Its structural integrity was further compromised by fires, and the building collapsed later in the day at 5:20 p.m.[23]

which the north tower, hit first by plane which fell 2nd after the south tower and it's debris in turn made WTC 7 fall roughly 7 hours later.
and then this cited section on conspiracies:

This controlled demolition hypothesis is rejected by the National Institute of Standards and Technology and by the American Society of Civil Engineers, who, after their research, both concluded that the impacts of jets at high speeds in combination with subsequent fires caused the collapse of both Towers.[178][179][180]

September_11_attacks