Collapse of the twin towers in 2001. An engineering perspective

[Wrangler]

I was shocked to hear he and his three accomplices are still awaiting trial!!!

The trial date will be scheduled shortly after they’re all dead.

Said differently, they are POW’s or quasi-POW’s, not entitled to a trial AS IF they are common criminals doing something in our jurisdiction. IMO, they should‘ve been put to death after interrogation as enemies of civilization.

 

[amigo de christo]

wanna know a secrete . i bet if biden and harris had said it was an inside job their side would have said it was .
I bet if trump had said it was , well his side would agree as well .
Wanna know what i have noticed about those whose hopes be in men .
THEY always follow those men , never knowing the Truth but having at most truths blended in with a lie , by which
THEY ARE simply deciev ed . Yep . sums it up for all whose hopes be in men of this world .
Cursed is the man whose hope be in men .
BLESSED be the man whose hope IS IN GOD , THUS IN HIS CHRIST , and thus IN HIS WORDS and GOSPEL .

 

[JimKnox]

There's a maxim that when you eliminate what is impossible, whatever is left, no matter how improbable must be the case.

Given the physical impossibility of steel buildings to collapse without internal demolition the way the World Trade Center buildings did, there are few other possible explanations - no matter how implausible. I'm not saying it's hard to believe so many people could be involved, not be noticed and not talk about it. I'm saying that political challenge does not alter the laws of physics from an engineering perspective.

What would be the motive of The Deep State? I'm reminded of an episode of the TV show, House, where a billionaire took over the hospital. He told Dr. Greg House to fire one of the 3 members of the team. Instead, he cut everyone salary by 1/3 so the savings to the hospital were the same. The owner said that is unacceptable for it is not what he was told to do. It's not merely the team needs to know, Dr. Greg House needs to know he must do as he's told.

I recall at the time the duplicity of our government at the time. I've always been primarily driven by economics from a political perspective. President Bush said he thought the first plane crash was an accident, the 2nd was an attack and the 3rd was an act of war. OK, it's war then. The insurance companies have a war clause where they don't have to pay out. Except they did.

Just like Obamacare years later, where it was for legislative purposes not a tax but for judicial purposes, it was a tax; 9/11 was deemed war for political purposes but not for financial and legal purposes. Further duplicity was the "Patriot" act, which was anything but. Then "Real ID." Systematic control.

Your first sentence is flawed.
It is NOT physically impossible for that to happen. Ever heard of an earthquake?

 

[JimKnox]

Well said.



@Debp, pasting a vid is no substitute for discussion. CyB is blessed to have degrees engineers, literal experts in the field, myself included. Other than appeal to the authority of the vid, is there anything to dispute the points @Ronald David Bruno made, starting with the fact that jet fuel doesn’t burn hot enough to melt the steel used?

This is a foundational fact of the analysis. Its implications are enormous as it begs the question of what then caused the collapse?

That fuel doesn't need to melt the steel; only soften it.
Ya'll conspiracy nuts are not thinking clearly. Don't get me wrong. I believe our government has done some nefarious things. But this ain't one of them.

 

[amigo de christo]

Your first sentence is flawed.
It is NOT physically impossible for that to happen. Ever heard of an earthquake?

yes . i have heard of an earthquake . even seen footage of such an event .
As i have with a tsunami
and tornadoe and etc .
And its also true i have seen the effects of a demoliation effect of bringing down a buliding .
Now while its true it might possibly have been the case , though highly doubtful but possible , for one
of them buildings to on the off chance have fallen like one that is demo .
NOT ALL OF THEM . NO WAY and no HOW .
WHY do you think they are so v ery careful on where and how to place them charges .
SO THEY cAN bring it down safely .
KINDA ODD that all of them b uildings came down JUST LIKE that demo .
IT would be hard enough to convince me that if Twenty buildings fell and then one , just one of them
came down like a demo . BUT THEY ALL FELL just like it . KINDA ODD . REAL ODD , VERY ODD .
Something is not right . but seeing i dont know it all , well all i can say is
SOMEONE is lying to this people . THEM buildings ALL of them came down as tho ugh perfectly demoed .
KINDA ODD dont ya think .

 

[Armour of God]

Well said.



@Debp, pasting a vid is no substitute for discussion. CyB is blessed to have degrees engineers, literal experts in the field, myself included. Other than appeal to the authority of the vid, is there anything to dispute the points @Ronald David Bruno made, starting with the fact that jet fuel doesn’t burn hot enough to melt the steel used?

This is a foundational fact of the analysis. Its implications are enormous as it begs the question of what then caused the collapse?

While it's true that the jet fuel would not melt the steel into molten liquid, it would still get steel hot enough for it to warp very easily. Steel melts at around 1500c. Jet fuel burns at about 1000c. Steel starts to weaken at about 500c

But the steel columns are encased in concrete to protect it from fire. So it would take a very long time for an intense fire to get the concrete and the steel to 500c.

Now the impact of the plane would of damaged some of that concrete, exposing some raw steel to the fire. And it could of caused columns to buckle on those floors.

But below that, all the steel is not being effected at all by any fire and should not crumble so easily like a twig.

The colums are what's holding up the building. For it to come down at the same rate as gravity they have to be sheared very fast. But columns don't just shear when an excessive load is applied to them. Colums buckle first. This buckling of columns acts as resistance and decelerates the collapse.





So the floors that got hit by the plane could of collapsed. Even several floors below could of got crushed. But as each floor got crushed it should have decelerated and stopped.

But what we saw was an acceleration equal to gravity all the way to the floor. This means that colums were all shearing in a split second before the excessive load even reached them. Only possible with the use of explosives.

Also, only one side of the building was damaged so how did colums on the other side of the building give way. One side of the building could have dropped, leaving the top part on an angle and the top part could of even fallen off to the side eventually. That's another way it could of happened.

But columns don't just snap. They buckle. And while the energy could of buckled the first few floors. It shouldn't have done it to every single floor. Especially not at that speed.

Here are some more examples of columns buckling.

 

[Armour of God]

That fuel doesn't need to melt the steel; only soften it.
Ya'll conspiracy nuts are not thinking clearly

My OP spoke nothing about any conspiracies.

It's an engineering evaluation that myself, my class mates and my teachers done at the time. There was no politics that effected our conclusion. Only physics and engineering.

It's true that steel doesn't need to reach melting point for it to loose its strength.
I addressed this in the post above.

 

[Wrangler]

Your first sentence is flawed.
It is NOT physically impossible for that to happen. Ever heard of an earthquake?

Can you provide a video that shows a steel building such as the twin towers that collapsed like a demolition due to an Earthquake? I didn’t think so.

 

[Wrangler]

That fuel doesn't need to melt the steel; only soften it.

I am an expert in amorphous rheology with decades of practical experience. In the case of steel, a crystalline material, do you know the difference between its softening point, Tg, and its melting point, Tm? And do you know how the Tg compares to the temperature jet fuel burns?

I gave you the benefit of the doubt that your first post about a dog house was not directed at me w.r.t. a geometrically stable lattice. Suffice it to say, bolts that “softened” would not result in collapse of the building for the simple reason that the building is not held up by mere bolts anymore than the pyramids are.

 

[Wrangler]

Ya'll conspiracy nuts are not thinking clearly.

How about you stop the false witness, slanderous comments and stick to the physics?

 

[CrowCross]

I wonder how they found two passports at two different scenes that just so happened to belong to the terrorist.

 

[JimKnox]

Can you provide a video that shows a steel building such as the twin towers that collapsed like a demolition due to an Earthquake? I didn’t think so.

Please. Stop saying stupid things.
Please.
Just stop.
You are embarrassing yourself.

 

[JimKnox]

How about you stop the false witness, slanderous comments and stick to the physics?

How about you stop lying about people.

 

[JimKnox]

I am an expert in amorphous rheology with decades of practical experience. In the case of steel, a crystalline material, do you know the difference between its softening point, Tg, and its melting point, Tm? And do you know how the Tg compares to the temperature jet fuel burns?

I gave you the benefit of the doubt that your first post about a dog house was not directed at me w.r.t. a geometrically stable lattice. Suffice it to say, bolts that “softened” would not result in collapse of the building for the simple reason that the building is not held up by mere bolts anymore than the pyramids are.

You are an expert like I am John Wayne's brother.

 

[Ronald Nolette]

You guys crack me up.

maybe if you did some independent research and look at the results of thousands of engineers and physicists and chemists and structural engineers, you wouldn't think it so funny.

Buildings damaged by accident have NEVER collapsed in on themselves, especially skyscrapers.

those are professionally and carefully planned take downs.

 

[Ronald Nolette]

The above post demonstrates the ignorance of people who never built a doghouse let alone a commercial building.

And yo0ur post demonstrates a complete lack of insight nor study. It also shows that you just sat back and let the so called officials spoon feed you their tales.

There were so many laws broken concerning the removal of debris and how those buildings fell.

You cannot demonstraqte one building damaged by an accident that collpased in on istelf.

I have watched engineering videos of skyscrapers completely consumed in flames and none of them collpased.

 

[JimKnox]

And yo0ur post demonstrates a complete lack of insight nor study. It also shows that you just sat back and let the so called officials spoon feed you their tales.

There were so many laws broken concerning the removal of debris and how those buildings fell.

You cannot demonstraqte one building damaged by an accident that collpased in on istelf.

I have watched engineering videos of skyscrapers completely consumed in flames and none of them collpased.

Who says those buildings were damaged "by accident"?
That's a goofy statement.

 

[Wrangler]

Please. Stop saying stupid things.

No video graphic evidence to support your position. Gotcha!

All you got is personal attacks. Bless your heart!

 

[JimKnox]

No video graphic evidence to support your position. Gotcha!

All you got is personal attacks. Bless your heart!

You don't have the evidence to support your nonsense either.
The following are FACTS:
Impact destroyed columns > fireproofing was stripped on impact > jet fuel and OFFICE FURNITURE,etc fires weakened steel trusses and other structural supports (fires burnt @ 1500-1800°) > trusses sagged > columns buckled > upper block lost support > progressive collapse straight down the load path via irresistible gravitational drop.

Once the first level dropped, the remaining levels could not resist the energy of the upper levels impact upon the lower level and it was a consecutive failure like dominoes.

THERE WERE NO EXPLOSIVES. It was physics.

 

[Taken]

I think;

… US intel had prior notice of foreign intent to hyjack planes and ram the towers… but didn’t know WHEN.

…buildings 1, 2, 7, were prepared for an Implosion demolishing….under the guise of routine Maintainance that would not be suspect to regular office workers.
For…
The purpose assured mass destruction and blame on foreign entities, for whenever planes would hit…with overwhelming American Support.

…that building 7, destruction was the real Gov interest … and convenient to peddle a story of “magic implosion” similar to the Govs “ Kennedy “magic bullet” Fantasy that still parades as an official report.