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[–] hels [S] 5 points 15 points (+20|-5) ago 

The steel/concrete core is what prevents a building falling down on itself. The core doesn't break apart and will not 'melt' from a fire.

Think about a fire stories higher that actually could melt steel and break concrete (it can't but we'll pretend). So what happened to the steel/concrete below this? Steel bends and concrete remains the way it is so why did the buildings all collapse straight down?

[–] SweetChicken 1 points 13 points (+14|-1) ago 

Not only that but also turn into a pyroclastic flow? How did all those thousands of tons of concrete simply turn to dust?

[–] Rakosman 1 points -1 points (+0|-1) ago 

I can turn concrete to dust with a sledge 3.5lb hammer. So, the whole thousands of tons part.

[–] Usamaybe 6 points -3 points (+3|-6) ago 

compression.

[–] l_voated_today 4 points 11 points (+15|-4) ago 

The twin towers were supported by the perimeter framework.

[–] PraiseIPU 2 points 9 points (+11|-2) ago 

How dare you state facts in a conspiracy thread.

[–] Laserchalk 0 points 1 points (+1|-0) ago  (edited ago)

They were supported by both the core and the perimeter. It was design this way so they could have large floor spaces. It's a bit stupid to say that it was supported by the perimeter alone.

[–] lipids 0 points 1 points (+1|-0) ago 

Why have I never heard this defense until today?

[–] weezkitty 0 points 0 points (+0|-0) ago 

Which apparently turned out to be a really bad idea

[–] hafen 0 points 9 points (+9|-0) ago 

I heard that the engineering was unique for it's time in that weight was supported by exterior columns.

[–] harmlessgryphon 0 points 1 points (+1|-0) ago 

It was - floors basically suspended with a main column and tie points to the structure. Don't forget the shitty fireproofing, I'm really surprised the things didn't have issues before that.

Regardless, the whole collapse is really fishy. That's all I know.

[–] Pseudonym888 1 points 2 points (+3|-1) ago  (edited ago)

The rate of gravity was accelerated ×3. It took 4.8 seconds to collapse. If you stood on top of a building 1,200 ft dropped a 20 pound anvil it would take 12.8 seconds to hit the ground. Concrete, which is carbon and C4/termite have the same co-efficient of expansion. https://youtu.be/oV0yHn11RDw

The person on that video claims by triggering a c4 detonation all anything concrete/with a 'carbon' molecular structure was instantly turned into dust leading to the remaining suspended structure to neatly pile down in 4.8 seconds. The big white cloud of dust is toxic asbestos which was carried away by the wind but also the suspect reason for the high incidence of cancer cases among first responders /survivors.

9/11 was/is the biggest spectacle I have ever seen in my life. Just to start a perpetual war. Wow

[–] Rakosman 0 points 0 points (+0|-0) ago 

Gravity accelerates everything at the same rate irrespective of mass. This is such basic physics that you learn it in elementary school.