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Originally posted by Vushta
Do you always answer a question with a question?
I don't--it seems a cheesey way to have a discussion.
Originally posted by Vushta
A few may be SE's, ME's, people qualified to conduct forensic investigations, failure analyists, people working in finite element analysis..etc.
Originally posted by Slap Nuts
Originally posted by Vushta
Do you always answer a question with a question?
I don't--it seems a cheesey way to have a discussion.
Your question was answered by Mr. Fetzer in the link I provided for you above.
Jone's paper was reviewed by two other Ph.D.s in Physics. That is three Ph.Ds alnoe for his paper written concerning physics.
POINT OUT THE ERRORS IN STEVEN'S PAPER IF YOU THINK THE PEER REVIEW WAS WRONG OR SHUT YOUR UNDEREDUCATED MOUTH.
That is all.
Originally posted by Slap Nuts
Your question was answered by Mr. Fetzer in the link I provided for you above.
Jone's paper was reviewed by two other Ph.D.s in Physics. That is three Ph.Ds alnoe for his paper written concerning physics.
That is all.
POINT OUT THE ERRORS IN STEVEN'S PAPER IF YOU THINK THE PEER REVIEW WAS WRONG OR SHUT YOUR UNDEREDUCATED MOUTH.
Originally posted by Masisoar
I suppose you can prove what it is, Snoopaloop? Or atleast an educated guess.
Originally posted by snoopy
Yes it was peer reviewed by others in Physics, but not civil engineers.
And since this is an engineering issue, it's kind of a moot point. I suppose he could
But there are many arguments that put a dent in Jone's paper that I have seen on this forum. The biggest one being the molten steel issue which turns out no one knows it was molten steel and this was all absed on assumption. unfortunately people just used the word 'steel' which was taken literally by conspiracy theorists.
Originally posted by Slap Nuts
POINT OUT THE ERRORS IN STEVEN'S PAPER IF YOU THINK THE PEER REVIEW WAS WRONG OR SHUT YOUR UNDEREDUCATED MOUTH.
6. Early Drop of North Tower Antenna
The official FEMA 9-11 report admits a striking anomaly regarding the North Tower collapse:
“Review of videotape recordings of the collapse taken from various angles indicates that the transmission tower on top of the structure began to move downward and laterally slightly before movement was evident at the exterior wall. This suggests that collapse began with one or more failures in the central core area of the building. (FEMA, 2002, chapter 2; emphasis added.) “
Yes, we can see for ourselves that the antenna drops first from videos of the North Tower collapse. (See 911research.wtc7.net...; also home.comcast.net...) A NY Times article also notes this behavior:
The building stood for more than an hour and a half. Videos of the north tower's collapse appear to show that its television antenna began to drop a fraction of a second before the rest of the building. The observations suggest that the building's steel core somehow gave way first… (Glanz and Lipton, 2002; emphasis added)
But how? What caused the 47 enormous steel core columns of this building which supported the antenna to evidently give way nearly simultaneously, if not cutter charges?
The anomalous early antenna-drop was noted by the FEMA report (FEMA, 2002) and the New York Times (Glanz and Lipton, 2002) yet not resolved in the official reports (FEMA, 2002; Commission, 2004; NIST, 2005). The NIST report notes that:
...photographic and videographic records taken from due north of the WTC 1 collapse appeared to indicate that the antenna was sinking into the roof [McAllister 2002].
When records from east and west vantage points were viewed, it was apparent that the building section above the impact area tilted to the south as the building collapsed. (NIST, 2005)
However, we find no quantitative analysis in the report which shows that this tilting of the building section was sufficient to account for the large apparent drop of the antenna as seen from the north, or that this building-section-tilting occurred before the apparent antenna drop. Furthermore, the FEMA investigators also reviewed "videotape recordings of the collapse taken from various angles" yet came to the sense that "collapse began with one or more failures in the central core area of the building." (FEMA, 2002) Quantitative analysis needs to be done and shown to resolve the issue.
9. Rapid Collapses and Conservation of Momentum and Energy
A recent (2006) analysis by Mechanical Engineering Professor Judy Wood on the rapid collapse of the Towers is instructive although preliminary: janedoe0911.tripod.com...
How do the upper floors fall so quickly, then, and still conserve momentum and energy in the collapsing buildings? The contradiction is ignored by FEMA, NIST and 9-11 Commission reports where conservation of energy and momentum and the fall-times were not analyzed. The paradox is easily resolved by the explosive demolition hypothesis, whereby explosives quickly remove lower-floor material including steel support columns and allow near free-fall-speed collapses (Harris, 2000).
Originally posted by HowardRoark
Jones complains that the NIST report does not contain any quantitative analysis of the antenna movement, yet he conveniently fails to provide any himself either.
Furthermore, he also seems to be blissfully unaware of the presence of the hat truss whose primary purpose was to distribute the antenna loads to the perimeter as well as to the core. This is an engineering issue, not a physics issue.
Another key and fundamental error in his paper is his basic assumption that the initiation and propagation of the collapse was strictly a “pancake” mechanism whereby each floor successively impacts the floor below. This is also the same mistake that Judy Wood makes in her billiard ball analogy.
Buckling failures do not require the successive impacts of floors to cause floor failure, rather the failure is caused by a change in the basic geometry of the structural design and the pieces buckle. Thus the speed at which the point of failure moves through the structure does not act like a series of billiard balls bouncing off each other. This is because the primary cause of the failure of each successive floor is not the direct impact of the debris from above, but the movement of the structural members which destroys the load paths.
Originally posted by bsbray11
Furthermore, he also seems to be blissfully unaware of the presence of the hat truss whose primary purpose was to distribute the antenna loads to the perimeter as well as to the core. This is an engineering issue, not a physics issue.
You used to argue that the antenna never really tilted independently, didn't you, Howard? Whatever happened to that?
The antenna began to fall "a fraction of a second before the rest of the building".
Tell us exactly what other mechanisms were at work in your theory, Howard. NIST left this entirely out of their report, and considering you're not an engineer yourself, I'm sure you would know exactly what you're talking about.
Why would trusses fail before anything had landed upon them?
What happened to the spandrel plates on the perimeter columns?
Why did we not see a wave of buckling ahead of the collapse wave itself (in which everything was utterly destroyed by the falling mass)?
Originally posted by HowardRoark
Where have I changed my position?
I don't pretend to know everything about the progress of the collapse.
The amount of pulverization present at the WTC indicates either (a) extreme resistance that was still easily, and consistently met at each floor by the falling mass (contradicts lack of resistance), or (b) explosives.
Originally posted by Duhh
Oh but you can! That is a uneducated guess at best.The mass it what killed the resistance.Pulverization is still mass.It was pulverizing at an amazing rate.No doubt.Not even kinda against "physics there!
The WTC collapse was a concoction of a pulverization factory and of meeting little resistance in its fall. You can't have both.