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South Tower Top Section Lean

"essentially, all models are wrong, but some are useful"
-- statistician George Box


I'm not an engineer or physical scientists of any sort, so I may be missing something here. I have read through this whole thread very carefully, and the only person I can understand is Dave Rogers. This could just be a verbal skill issue and Dave can write better than anyone else here...but I don't think that's the reason why.

All of this takes me back to a thread I once started where I talked about how many involved in the 9/11 Truth Movement are "confused". My point was that this confusion is not stupidity or mental illness or cognitive dissonance. This confusion is just like what happens to your thinking when you spin around for a long time or have to answer questions about something you didn't read properly or is at a level of comprehension that's too high for you. And I suspect that's something like what's going on here.

My wife and I had a baby recently. She was born 2 weeks early. This was not an issue for anyone, but it does point to a flaw in their model. How could a perfectly healthy baby be born so early? The attending physician could give me no explanation. We have a model about gestation that's based on perhaps millions of observations. How could it be so wrong? But in fact, it is routinely wrong.

So we have some JREF friends who have mastered some very complicated software. And with the vast amounts of free time that modern life gives to some of us, they have analyzed to death little bits and pieces of the collapse of buildings during the 9/11 attacks. While doing so, they have concluded that the report written by NIST is flawed. It is claimed that these researchers are not Truthers...or at least not necessarily Truthers.

And this I think is why Noahfence is asking those big bolded and colorful questions,

This is the 9/11 Conspiracy Theory Forum.

WHERE IS YOUR CONSPIRACY?

Your math and graphs are all 100% dead on accurate. You have collected the best observables in the known UNIVERSE.

Now, the relevant question is, so what?
What.
Does.
It.
Mean?

What is the point of all this? Is it just to show that some small detail of the NIST modeling is incorrect? Who cares? Models are incorrect in the details all the time. It is to be expected. The importance of these deviations from the model is when they point to errors in the interpretation of the phenomena. Tony Szamboti and others seem to feel they have found errors in the NIST model that point to dark and mysterious forces. Tony has told me that we need to examine the role of thermite in the WTC collapses to fully understand the errors he has observed.

I really like the final points of Dave's last post,

Suppose a conspiracy theorist were to say, "Have you ever noticed how the upper part of the South Tower initially appears to rotate about a fixed axis somewhere within the building at or close to the level at which collapse initiates, but then at some subsequent point, instead of continuing to rotate about that point, the otion of upper part of the structure also acquires a downward component?" It would then be a rather trivial matter to point out that this is exactly how a hinge point in a collapsing structure would be expected to behave, even though this is no more than a more precise statement of the original claim. And it's the inability or unwillingness of conspiracy theorists to state their claims clearly enough to allow them to be effectively refuted that I was originally commenting on, not the details of the collapse mechanism.

So perhaps someone can explain to me why Dave is wrong. By this I mean, why are the points that M_T and femr2 detail significant? Are they much more than just "exactly how a...collapsing structure would be expected to behave"? Do they point to a fundamental flaw with key aspects of the NIST report indicating something really, really, really bad? Or are we talking about some of our friends who spent half their life learning complicated software, analyzing really difficult multidimensional data and then putting up vast websites of their conclusions only to confuse the details of a model commissioned by the government with its correctness.

Tell me what's going on here that anyone should notice? Are we looking at something that only a death ray from space can explain? Do we need the super powers of a Steve Jones thermite attack? Or are we just talking about some guys who are so caught up in their own work, even they don't know anymore why it's important.
 
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I think the real disconnect is that femr2 is talking about the fine details of the collapse mechanism, whereas I'm talking about the confused thought processes of the people making the original claim.
I was simply responding to the OP, stating where his assertions were incorrect...

1. The top section does not begin leaning over first. The top section begins a downwards motion at the same time, if not slightly before the top section begins leaning to the east.

The OP now accepts that "leaning" preceeded "release".


3. The east face of the top section does in fact end up falling off the side of the building.

The OP now accepts that the section ejected was from the lower section, not the upper.

I have no issue with femr2's description.
Splendid.
 
I have read through this whole thread very carefully, and the only person I can understand is Dave Rogers. This could just be a verbal skill issue and Dave can write better than anyone else here...but I don't think that's the reason why.
Neither do I.

All of this...
...is pretty irrelevant as the OP has accepted correction and suggested "thread closed".

My wife and I had a baby recently.
And you have spare-spare time to wax lyrical. Crikey :)

And this I think is why Noahfence is asking those big bolded and colorful questions
And he got a direct response, namely the information the OP needed to improve and correct his observational errors. You may not agree, which is fine.

So perhaps someone can explain to me why Dave is wrong.
Who said he was wrong ?

By this I mean, why are the points that M_T and femr2 detail significant?
The "points I detailed" are significant, because that is what happened, as opposed to the incorrect assertions made by the OP, who has calmly accepted correction and moved on.

The only productive use of this thread from now on would be to present even more detailed information about "south tower lean" that actually happened, rather than repetative and pointless "truther bashing" ad nauseum. If such detailed information shows details in the NIST report to be incorrect, then as per the process with the OP, it should be pointed out.

South Tower Top Section Lean.
 
For WTC1,2 in 2D coordinates

From 0 deg to at most 2.8 deg ( columns shear angle as calculated by Bazant first paper), any point in the moving portion rotates about the last column to shear (release, break) tracing a circular arc about the center of its radius, the fixed portion of the last column to shear (pivot). It has a positive horizontal and negative vertical position vector. This point is falling in a circular path.

After the last column shears, any point in the moving portion continues to rotate, tracing an elliptical or parabolic arc (don’t know which) as it falls. It has a positive horizontal and negative vertical position vector. This point is falling in an elliptical or parabolic path.

After the moving portion stops rotating it continues moving, any point in this moving portion traces a vertical line. It has 0 horizontal vector and negative vertical position vector. This point is falling vertically.

Since both towers fell at an angle in two directions and vertically, the path of any point can also be more precisely treated as 3D position vectors.

Would the above help determine what caused the collapse of the two towers, no.
 
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And you have spare-spare time to wax lyrical. Crikey :)

Because I have a job which is the envy of almost all adult humans...just had to say that...

And he got a direct response, namely the information the OP needed to improve and correct his observational errors. You may not agree, which is fine.

No, this is a very reasonable thing to say. I think your entire response is quite sensible and I appreciate your taking the time to respond to my comments in such a calm tone.

Who said he was wrong?
The "points I detailed" are significant, because that is what happened, as opposed to the incorrect assertions made by the OP, who has calmly accepted correction and moved on..
Fair enough.

The only productive use of this thread from now on would be to present even more detailed information about "south tower lean" that actually happened, rather than repetative and pointless "truther bashing" ad nauseum. If such detailed information shows details in the NIST report to be incorrect, then as per the process with the OP, it should be pointed out.

South Tower Top Section Lean.
As I am not an engineer or physical scientist, it is not clear to me how true this is. I await the judgement of others. But your response has been reasonable. I hope I don't sound repetitive, but thank you for answering my questions.
 

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