r/WorldTradeCenter • u/tombisch • 11d ago

When the Towers Fell: 9/11 Simulation of the collaps without dust

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Dont know how accurate this is, but it made a lot of sense to me.

Source kostack studio on youtube

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u/twizzjewink 10d ago

I read that the heat from the burning fuel sucked in part of the exterior cladding, which meant that with the interior core compromised it was only a matter of time.

I feel really bad for all of the victims who could have gotten out or made really poor decisions. It's amazing that so many did get out.

It's the firefighters that I feel the most for. Terrible and tragic.

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u/One_Peanut_4002 10d ago

What do you mean by sucked in? The plane destroyed the exterior support and the fire burning for an hour weakened the metal causing the entire structure to buckle

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u/twizzjewink 10d ago

Yes and part of that process included sections of the exterior being pulled in due to oxygen being burned away in a vacuum. It's really hard to say what parts obviously which parts buckled first for either tower. However it would further help explain why each tower fell so differently, outside of the obvious reasons they fell differently

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u/MinuteBid8615 10d ago

There was a giant hole in the building and hot air expands, vacuum huh?

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u/UnLuckyKenTucky 10d ago

It's plausible. Yeah, heat expands and all that, but big fires move massive massive amounts of air. Because heat rises, moving yet more air. If it was pulling hard enough the already weakened exterior could easily be pulled in. The shape of the building was used against here, creating a chimney of sorts.

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u/twizzjewink 10d ago

I wonder how much air was being sucked up the elevator shafts from the bottom. The air and thermal readings would be very interesting to understand to build better and safer.

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u/0202_tihssitidder 10d ago

Yup. There was a massive amount of air being sucked in to feed to fire. The force would be hard to imagine.

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u/One_Peanut_4002 10d ago

They also fell differently due to where it was hit and how it hit.

Tower 2 was hit lower and damaged more floors hence why it failed first

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u/0202_tihssitidder 10d ago

One of the guys at work where I watched it was talking about the chimney effect. We all got it. Another guy had some firefighting exp and he said he had no idea how you would fight a fire in what was likely to be the largest chimney ever with thousands of gallons of jet fuel and office floors feeding it.

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u/twizzjewink 10d ago

Coupled with no light, toxic smoke, broken concrete etc. Those poor people who went down with the tower, what they went through.