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Originally posted by gottago
Sigh.
Cap'n, you just don't get it, do you? I am turning the tables and tarring you with your own brush, in sarcasm, but you don't see the irony of it and instead you redouble your efforts and start putting "facts" in all caps.
Originally posted by talisman...... dig up all those quotes and references from your little Langley data base and redouble your efforts.
Hahhahahahahha I used Google. But I will let my fellow PNAC'ers know that you are on to me.
Thank you for your opinion. It remains your opinion.
IS there evidence of a controlled demolition? Nope. Thats a fact, not an opinion.
[edit on 9-3-2008 by CaptainObvious]
[edit on 9-3-2008 by CaptainObvious]
Originally posted by CaptainObvious
Gottago... It is YOU that does not get it. I understand the "irony". Truthers get bashed for making money off 911... Now a Fire Captain does. I get it. What you don't get is the INTENTIONS of the person. the Chief is not selling books or DVD's accusing the government of orchestrating the murders of 3 thousand people.
His book goes into detail on how and why the buildings collapsed, possible flaws in building designs, and how the Port Authority may have pussy footed around some building codes. He does this to avoid the same thing happeneing in other highrise structures. The goons I listed are all trying to make $$ of their LIES and distortions. See the difference?
Originally posted by talisman...... dig up all those quotes and references from your little Langley data base and redouble your efforts.
Hahhahahahahha I used Google. But I will let my fellow PNAC'ers know that you are on to me.
IS there evidence of a controlled demolition? Nope. Thats a fact, not an opinion.
Originally posted by gottago
IS there evidence of a controlled demolition? Nope. Thats a fact, not an opinion.
Pfft.
Molten steel. Free fall. Crimp. Squibs. No NIST report 6+ years on. Complete and instantaneous structural failure. Explosions. Reporting it coming down before it comes down. Yelling "get outta the way, the building's gonna blow up." Blown up lobby before collapse of WTC. Need I go on?
Your idea of "facts" is also an opinion. Highly biased, as well.
Originally posted by CaptainObvious
Molten Metal. (no evidence that it was in fact steel)
Free Fall. (false)
Crimp. (crimp? wtf is a crimp?)
Squibs. (are we talking WTC 1, 2, or 7? or all of them?) Either way, they were not explosives going off. It was explained many times over what the "squibs" were.
Please do not go on. Your argument is the same old recycled CT's that have been explained or debunked for years.
Originally posted by ANOK
I urge everyone to read both Greenings paper and Gordon Ross' and then make up your own mind.
Why do Greening and Ross disagree?
--------------------------------------------------------------------------------
For brumsen, there is a difference between Greening's paper www.911myths.com... and Ross's paper worldtradecentertruth.com... about whether or not the initial collapse of the WTC towers had enough energy to initiate a progressive collapse. Greening shows that the kinetic energy of a single floor collapse is more than sufficient to break all of the support columns on a single floor, therefore the collapse can proceed just like we saw on TV (twice). Ross concludes differently, that Greening has neglected linear strain in the columns below, sufficient to provide a "shock absorber" effect as the standing columns compress like springs, and that the recalculated energy is insufficient.
There's a couple of problems I see with Ross's paper. Page numbers start from 1, not the number printed at the bottom of each page.
Gordon Ross, pp. 1-2
Bazant/Zhou [1] show in their analysis that elastic and plastic behaviour of a steel column under a dynamic buckling load can be shown to consist of three distinct phases. These can be
shown on a load against vertical deflection graph and consist of an initial elastic phase, a shortening phase and a rapid plastic deformation phase.
Ross is trying to bring out material properties of individual structural elements, more detailed than Greening's analysis. However, it's important to point out that Ross is trying to treat this problem one dimensionally. In reality, the columns will be subjected to a side force. The floor trusses are either failed or intact -- if failed, the top of the column is no longer constrained, and is free to deflect to the sides; if intact, the stronger core columns will experience less strain and the outer columns will be pulled inwards, balanced by an outward pull on the core. We also know from video evidence that both towers did not collapse, nor were hit, symmetrically.
I point this out because the yield strength of a column that is free on one end is considerably less than the yield strength where both ends are pinned.
Gordon Ross, pg. 5
Energy Summary:
The energy balance can be summarised as
Energy available;
Kinetic energy 2105MJ
Potential energy Additional downward movement 95MJ
Compression of impacting section 32MJ
Compression of impacted section 24MJ
Total Energy available 2256MJ
Energy required;
Momentum losses 1389MJ
Plastic strain energy in lower impacted storey 244MJ
Plastic strain energy in upper impacted storey 215MJ
Elastic strain energy in lower storeys 64MJ
Elastic strain energy in upper storeys 126MJ
Pulverisation of concrete on impacting floor 304MJ
Pulverisation of concrete on impacted floor 304MJ
Total Energy required 2646MJ
Minimum Energy Deficit -390MJ
(emphasis added)
I'd call this a smoking gun. Ross in his energy balance equation has double-counted the floor collapse energy. He's assuming not only the floor getting hit has to collapse, but also the lowest floor of the falling block collapses as well (bolded items). Well, that could be, but if both of them collapse, you're not dropping that weight one floor -- you're dropping it two floors. Energy available DOUBLES.
I also note that the calculated loss due to "momentum losses," e.g. the allegedly harmless acceleration of lower floors due to plastic deformation, is greater than half of the energy budget. That is a heck of a big correction. As noted above, I disagree that you can simply throw this energy away, because it is still contained in the structure.
As noted before, all of the other real-world conditions that are hard to simulate -- asymmetric damage before collapse, asymmetric impact, anisotropic deformation caused by fires -- are not included in this paper. Far from being a "conservative" estimate as is claimed, this model, even if taken at face value, would not be entirely conclusive.
A final point that Ross has not addressed is that the floor that the upper stories fell upon was not in blueprint condition! It was immediately below the raging fire that collapsed the impact floor, suffered deformation from proximity to the impact floor, and was heated enough to weaken its yield strength. Again, even if we take Ross's numbers as correct, but add another floor's worth of gravitational energy, we still get collapse initiation.
To conclude, this is way better than the usual CT fodder but would still fail peer review. He's shown his math and assumptions, and I credit him for that. But I reject several of his assumptions, I don't understand why he complicates the energy balance equation, and even if true his "energy deficit" is too small to be a definitive disproof of collapse. And that's for the tower that was hit more gently.
newtonsbit.blogspot.com...
Mr. Ross, your conclusions and sums and methods have been proven wrong. In my previous letter I offered you the chance to fix and update your calculations out of professional courtesy. Out of respect for your abilities, I said it would be easy for you to do. I had hoped that you would take a harder look at that issue, and take another look at the rest of your paper, but you have chosen not to do so. Your response was nothing more than, “fake but accurate”. This is a disgusting manner for any engineer to respond. Sir, retract your paper or fix your calculations.
Originally posted by gottago
What was the metal then? And why do you think it is normal collapsed buildings should have molten metal in their debris piles for well over a month?
Originally posted by gottagoFree fall true. Total and instantaneous structural collapse. They go together. Address them both.
Crimp=the sag in the middle of the structure as it starts to fall. Classic CD technique, seen in the only steel high rise ever to collapse from scattered office fires, and into its own footprint.
Then what were the explosions if not explosions? Says you. Well...
And why don't you address the other points of foreknowledge? Because they're so obvious it makes your contention absurd?
911guide.googlepages.com...
This is a message from Chief of Department (ret.) Daniel Nigro, addressing the conspiracy theories surrounding the collapse of WTC7. Thank you very much for this statement, Mr. Nigro. The work you and your colleagues did will never be forgotten.
Release date: September 23, 2007
Regarding WTC 7: The long-awaited US Government NIST (National Institute of Standards and Technology) report on the collapse of WTC 7 is due to be published at the end of this year (although it has been delayed already a few times [ adding fuel to the conspiracy theorists fires!]). That report should explain the cause and mechanics of the collapse in great detail. Early on the afternoon of September 11th 2001, following the collapse of WTC 1 & 2, I feared a collapse of WTC 7 (as did many on my staff).
The reasons are as follows:
1 - Although prior to that day high-rise structures had never collapsed, The collapse of WTC 1 & 2 showed that certain high-rise structures subjected to damage from impact and from fire will collapse.
2. The collapse of WTC 1 damaged portions of the lower floors of WTC 7.
3. WTC 7, we knew, was built on a small number of large columns providing an open Atrium on the lower levels.
4. numerous fires on many floors of WTC 7 burned without sufficient water supply to attack them.
For these reasons I made the decision (without consulting the owner, the mayor or anyone else - as ranking fire officer, that decision was my responsibility) to clear a collapse zone surrounding the building and to stop all activity within that zone. Approximately three hours after that order was given, WTC 7 collapsed.
Conspiracy theories abound and I believe firmly that all of them are without merit.
Regards, Dan Nigro
Chief of Department FDNY (retired)
Of course you don't want me to go on. You can't even address the roll call I already gave you.
please show me pictures of the North Tower's base post collapse. Along with photos of the side of the North tower that was in direct line of the South Tower. I will also look for some.
When you post only one quote out of many, ignoring all the others, that is called cherry picking. It's the quote that fit's your agenda.
Yes you are. If the fire department knows the building is about to be taken down by controlled demolition. ( no matter WHO is doing it.) The FDNY is still (6 years later) not saying that the building was taken down via a C.D... Then they are an accomplice to the crime. Correct?
Building 6 was not the same construction as 7.
And the building was burning for over 5 hours too!
Again... Chief Nigro and specialists around the area made this determination and created a collaspe zone around WTC-7. Chief Nigro stated clearly (I have posted his quotes) that the building was not demolished via CD. Are you saying HE is in on it too? He was right there. HE wold have known if there were bombs in there. He is part of the cover up then.
Originally posted by talisman
...............I want to see damage to the NORTH TOWER that is consistent with that hypothesis.
Originally posted by talisman
No, its the relevant quote. It happens all the time in a court of law. Are you now saying that if we focus on a quote by a suspected killer, who says "I will kill you", that is cherry picking???
Its relevant what I am talking about, it is self-evident. "ITS ABOUT TO BLOW UP" needs to be looked at.
I didn't say the 'FIRE DEPT" knew, but some did. Big difference. I, personally feel the FIRE DEPT was confused that day, perfect opportunity for someone to work under that confusion.
Right, building 7 was a lot stronger, made more redundant and was further away! Bankers trust didn't globally collapse, that was closer then 7.
Building 6, didn't globally collapse btw. it had to be "PULLED" later.
Building 7 did the job for them.
Empire State Building was hit by a B-25 bomber and was on fire pretty good, no global failure there. Other buildings burned longer, no global collapse there.
You know, "if it walks like a duck"...
... Chief Nigro, never met the man in my life. But building 7 and its collapse is pretty close to being 'self-evident' regardless of what he says. Craig Bartmer was also "RIGHT THERE", he heard explosions. He believes something went on.
The prevailing idea is that the damage was caused by the debris on the south face. Then the building should have toppled toward the south, because of that and because the footprint is a flaring, elongated trapezoid with the flanges to the northeast and northwest. These would have acted like buttresses to forestall collapse to the north.
Just because you don't see the evidence of the damage does not me it will NOT exist somewhere else.
Unless you are calling the countless EMS workers at WTC liars. I have posted statements from many firefighters on this forum in the past outlining the damage witnessed by them.
It was a different STYLE building. How many hours were fires raging in building 6?
The fires were put out at the empire statebuilding. No? Is the empire the same tube-n tube construction?
First of all, have you met Police Officer Craig Bartmer? I would assume no. But you take HIS words over the Commander of the FDNY. Craig Bartmer supports your theory. Again this is called Cherry picking.
With all due respect to the NYPD, who would you listen to during a highrise fire? A Police office, or the Chief of the fire department.
Officer Bartmer said he hear explosions. I don't doubt his honesty in that statement because:
1: When there is a fire in a big building, lots of stuff found in there will go out with a bang. Soda boxes, spray cans, and plenty of other things.
2.Sounds of explosions do not equal evidence for explosives.
Originally posted by talisman
-- Regarding the NORTH TOWER, I disagree sharply with your comments.....
Totally inconsistent. If the Damage to Bldg-7 is caused by the South Tower, then we should see large damage to the NORTH TOWER. We don't see this. .....
We have some really good shots of the NORTH TOWER and I think we all seen them.
(Smith, Dennis. Report From Ground Zero. New York: Viking Penguin, 2002. p. 137)
Tim Pearson, NYPD (After South Tower collapse): As we’re going down, I can see the floor had collapsed. The south tower had collapsed the south side of the north tower. And I see nothing but fire all along there. It’s all fire down in the basement concourse, too, where we went in with the swinging doors, where they’ll take you out of the plaza. ...Eventually we make a right and go through the middle of the elevator banks, but on the other side of the banks is a big, open area filled with debris and fire. Now I can see, and obviously smell, the jet fuel that had come down the elevator shaft and that was all over the floor."
Originally posted by talisman
They can be simply mistaken. Their first priority was in fighting the fires and there was much confusion on the day. Now, here is the key thing. My argument is not that the South Tower didn't cause *ANY* damage. NO, that isn't what I am saying.
What I have been saying all along with the question is this... IS THE DAMAGE CONSISTENT?
Originally posted by talisman
--Regarding People knowing about Bldg-7's collapse.
The man in question said "IT IS ABOUT TO BLOW UP". The question I have, "BLOW UP" WITH WHAT??
People thought the Madrid building was going to collapse. It didn't.
People thought this because of what happened with the Towers.
People thought this about Bdlg-7, however they knew to close to the actual event and again, the term "BLOW UP".
"The most important operational decision to be made that afternoon was the collapse had damaged 7 World Trade Center, which is about a 50 story building, at Vesey between West Broadway and Washington Street. It had very heavy fire on many floors and I ordered the evacuation of an area sufficient around to protect our members, so we had to give up some rescue operations that were going on at the time and back the people away far enough so that if 7 World Trade did collapse, we wouldn't lose any more people."................and approximatley an hour and a half after that order was given, at 5:30 in the afternoon 7 World Trade Center collapsed completly.
Originally posted by talisman
Oh so were back to fire being the cause of Bldg-7's collapse?? So Building 7 wasn't built for fire and had no fireproofing?
- Captain Obvious
First of all, have you met Police Officer Craig Bartmer? I would assume no. But you take HIS words over the Commander of the FDNY. Craig Bartmer supports your theory. Again this is called Cherry picking.
Originally posted by talisman
I can say the same thing in reverse! One thing that people often look at is what does a person have to loose, and Craig has a lot to loose by coming out publicly about what he saw and heard.
My point was that there was confusion and it is possible that this was used as cover.
-Captain Obvious
With all due respect to the NYPD, who would you listen to during a highrise fire? A Police office, or the Chief of the fire department.
Originally posted by talismanThats fallacious, pure and simple. Your drawing an analogy with an appeal to authority. A woman screaming down the street and says that a person tried to attack her with a knife, doesn't have to be an expert in weapons identification to know what is happening. Furthermore, both are not experts in controlled demolitions or the like, so using your logic *both* should be excluded!
Originally posted by CaptainObvious
For the angular momentum problem Anok, what sort of force do you think stopped the rotation? I'm asking you this because the amount of explosives needed to do this would be absurd: we could expect to see something like the space shuttle take-off except with the entire upper block. It is entirely more plausible that the angular momentum was slowed and eventually stopped by the difference in resistance of the two corners. You see, the rotation starts with one wall still roughly connected to the structure and not falling (a pinned support) and the other end falling. The entire structure rotates about the pinned support. This generates the angular momentum. However eventually the pin will break and the entire structure is moving downwards though still retaining its' angular velocity. The lower part of the section is impacting tower that is lower in the structure and thus slightly stiffer than what the other end (formally pinned). This produces a counter-acting force that eventually slows and stops the rotation.
Originally posted by CaptainObvious
Now Talisman, it you are one to say Silverstein ordered the destruction of his skyscraper. Please explain to me how this was done.
Originally posted by CaptainObvious
For the angular momentum problem Anok, what sort of force do you think stopped the rotation?