re: Explain what caused the towers to collspse.

that NONE of the "truths" are the truth

we have been lied to over and over (not just 9/11)

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Or are you one of those “I’m just asking questions, I don’t know the truth” people?

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so asking questions to define something is bad?

I do not jump to a conclusion, if the answers are not conclusive.
I attempt to find more facts, and being as this is a

DISCUSSION BOARD,

thats kinda how this thing works

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So how did Bldg 7 fall in on itself? It WASNT HIT.

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I’m sure two of the largest buildings in the world collapsing directly next to WTC 7 had nothing to do with it. It was probably structurally as good as new and was blown up by the government for reasons.

It’s not like several other buildings in the vicinity also collapsed, were crushed, or had to be demolished in the years after (extreme sarcasm).

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and most structures, and pressure vessels are built with a minimum of 300% safety factor

so, at 50% reduction you are down to 250% SF

also the heat would be transfered thru all the steel,

this would cool the steel directly under the fire,

transfering heat

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But we're also discussing buildings that were build in the mid 60's not modern day high rises..

And I think you're off on your percentages. .Factor of Safety requirements are to determine load a building can hold.. they don't factor in a Boeing 767 that weighs 300,000 plus lbs with a little over 20,000 gallons of fuel to be slammed into the side of said building..

Impact alone would have severely damaged structural supports and certainly would not be operating at that 250% you pulled out your arse.. Couple that with pockets of heat that were reaching nearly 1800 degrees and you got a recipe for disaster..

There's no grand conspiracy here perpetuated our government to go fight a useless war with a nation that has no intrinsic value..

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the fire could be 1000° but barely raise the average temp of the steel 1/2 that or less

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oooo, now do an actual relevant temperature, like the 1500-ish that jet fuel burns at, or the estimated 1800 degree conditions in the buildings interiors.

You have heard of Aliens and UFO's right? UFO phaser particle beam firing on twin towers hit WTC7... We thought everyone knew that.
Signed: CIA and NSA

heat transfer is heat transfer, regardless

Youre throwing out empty platitudes with no real meaning.

Why did this store collapse when the issue was with the weight of an Air Conditioning unit?

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the building was designed to take a plane hit,

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Not the type of plane hit that it took. Not even close.

It was designed to withstand random idiots in private planes hitting them on accident while joyriding around Manhattan. Not a 767 loaded with fuel hitting it at full throttle.

But regardless, you don’t think planes hit the towers so why are you talking planes?

The amount of Google engineers in this thread is awesome. Are you guys doctors in your free time?

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Youre throwing out empty platitudes with no real meaning. Why did this store collapse when the issue was with the weight of an Air Conditioning unit?

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“If you can’t show me pictures of the HVAC unit fully intact in the wreckage that were taken the day of the collapse then that story is a lie”

-dr