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Wow I warranted two separate replies to one post, I must be special...
For the building to collapse globally to the ground ALL the steel would have had to fail at the same time.
The steel would have had to heat up uniformly and very quickly.
Even if the building was completely engulfed in fire it would still not be enough temperature, or time, to cause global failure. We now this from simple science and precedence from working with steel for a few years in similar situations (i.g. other buildings and machinery made from steel that's subjected to heat such as a stove or gas fire).
Yes steel will lose it's strength under extreme temperature but you obviously haven't really looked into how fires and steel work, and to put that claim into context.
For one the steel would act as a heat sink so all the heat would be spread along the length of steel thus cooling it. The fires were on just a few floors, what heated up the steel on the 90 odd floors bellow the impact point of the aircraft?
The building was designed to carry 5x it's own weight, so a little math tells me if the steel lost half it's load carrying ability it would still hold 2.5x it's weight. But it would have been impossible for office fires on a few floors to cause 110 floors of steel to lose half it's strength, even with the jet fuel and damage. Jet fuel only burns at around 300dc in open air, hardly a high temperature. Office fires at max will burn around 800dc, and no open air fire is ever going burn at 100% efficiency, so temps were predictably a lot lower than that. Grey smoke turning black indicates a cooling fire, unless of course a different fuel was suddenly added to the mix (highly unlikely). Do me a favour go look what temps NIST found on the steel and then tell me if that's hot enough to cause failure.
In 1975 there was a fire on 6 floors that lasted for 6 hours, no global collapse, no condemning of the building due to column weakening...
Originally posted by Damocles
becuase the fire, which was GOING to happen, MOST LIKELY would have damaged some or all of the ordinance packages. C4 (and most any other rdx based explosives) will burn, when they do their "bang" is much lower so the guys that would have theoretically planned this wouldnt be certain that their packages would cut the steel.
plus theres the chance that the wires/detcord hooked to the devices would have been damaged
but, its a matter of logistics.
Originally posted by bsbray11
Ok, that's for C4. I'm not talking about C4. I'm talking about everything that could have been used, because chances are, if that's going to be a problem, a good engineer would have had the foresight to head the problem off by some means. And since I'm not hearing C4 charges going off in the videos, I'm assuming that there were none and your argument is completely pointless.
And could not those chances be controlled?
but, its a matter of logistics.
And how are you qualified in that, especially applied to an organization of people you don't necessarily even know anything about?
Originally posted by Damocles
yeah, for C4...same goes for ANY rdx based ordinance. same goes for TnT. same goes for Dynamite to a lesser degree.
youre so sure it was a CD that thats all the further you want to investigate the theory. sorry, but i need more specifics.
so IMHO it would be IMPROBABLE that they could account for EVERY contingency.
i keep waiting for a "just kidding" on that. planning demo jobs, requisitioning ordinance, assigning teams, and setting up the packages woudlnt give me just a little idea of the logistics involved?
you got the guys, you got the ord, you roll up to the wtc towers and you cant see the challenge in placing just under 200 demo charges per floor, in the dark without using the elevators?
NOW that being said, if it was some OTHER "super secret govt organization using equipment reverse engineered from aliens at area 51 made up of guys that no longer exist and move like cyber ninjas" well tehn youre absolutly correct and im not even remotly qualified.
Originally posted by ebe51
No, only the area affected by the crash would have to fail, the rest fail as building was collapsing.
No it wouldn't, as stated above you only need the affect floors to fail
Jet fuel can burn somewhere around 1500degF that is hot enough to causes structural failure. Plus...
"Steel loses about 50 percent of its strength at 1100°F," notes senior engineer Farid Alfawak-hiri of the American Institute of Steel Construction."
I think your over estimating the heat sinking. This is like saying a blow torch will not cut steel because the heat from the torch would spread. It doesn't happen, there's limits to how much and how fast the heat can spread.
A pervious post covered this.
A fire on one floor is a little different then major damage from a plane crash, and fires with jet fuel as an accelerant on many floors. There's no comparison.
Originally posted by bsbray11
All of those things come from a very, very narrow sub-field of chemistry, rapidly expanding gases by producing massive volumes of gas in very short amounts of time.
Now if you can take that little sub-field of chemistry, and expand it to all that is possible to us given all of physics, I would be more impressed.
Otherwise there's not much use in you telling me conventional explosives didn't do it, especially when I already believe that.
That's because you're a demo guy. I'm not. I don't need to prove what devices were used to you to prove a demolition,
when I see the collapses and the best explanation anyone can come up with, is that a floor somehow gave way simultaneously and caused a domino-like reaction. If you believe that then more power to you. There's obviously much more to the issue than that, and it goes deep,
My point to you now is that I am accepting of the idea that your training is completely irrelevant to what happened to those buildings,
but they were still demolished. If that's beyond you then so be it. I'm pretty sure you agree, though, and I'm not sure what I'm really arguing with you about on this.
There are so many suspicious things about the collapses, but even if something minor was blatantly pointing to the obvious, you would ignore or dismiss it as the little detail that it is without having a fuller understanding of what it implies, just because you are biased that way. That is exactly what you would do, isn't it?
Seismic charts may be an example. WTC7's shows some bizarre information, but it's meaningless to you, isn't it? Some anomaly or mistake or misunderstanding or etc., not to really be considered.
How would you know? You just assert yourself like this, but I don't buy it. How many people have done what you did in the military over the years? How many people have had the same kinds of training you've had, and know the same relevant things that you know?
How "special" are you, in the grand scheme, is basically what I'm wondering.
Because you would have to be pretty damned knowledgeable, and pretty damned "in" some pretty high security-level/scientifically advanced stuff, with connections to very influential people, before you would EVER be requisitioned for such an operation, I would imagine.
It would obviously be much more involved than calculating an amount of explosives and sticking it somewhere, and considering all the limitations and special conditions that must have been satisfied, I really do have to wonder what makes you think your field would necessarily be relevant to any of this.
Ok, now you're going to have to prove it was done in the dark, that about 200 charges were used per floor (what kind of charges they were would help justify this), that the elevators weren't used, etc.
Actually, almost all of the core columns were accessible from shafts within the core, mostly elevator shafts. I wouldn't be surprised if excellent use was made of that fact.
Doing it in the dark would be suspicious. Why not out in the open as maintenance workers? Would you go up and get in their business, or give much more than a passing glance to what they were doing? Here's a better question: what makes you think any of this would have been done around unknowing people in the first place? Why can't you just cordon a little part of a floor off at a time, or how do you know anyone within a shaft would be visible to anyone outside anyway?
The 200 charges part I'm not even going to address, because you still haven't proved that conventional explosives would have been the preferred means in the first place.
And I don't take the claim seriously that C4 was conventionally placed on structural members just as it would be for a commercial demolition. That idea is completely stupid to me. It's stupid to you too, apparently, since you argue against it. Why do you keep bringing it up? Is it supposed to somehow represent what you think did happen to them? We'd all love to hear.
So do you actually know what those guys do at Area 51, since you were in the military? What about the secret service, or the Bilderbergers, or the Trilateral Commission or Council on Foreign Relations? You hang out with those people very often, have them inform you of all the dirty stuff they see on a casual whim? Because it sounds to me like the impression you got from your service, was that you're buddy-buddy with everybody involved with the military and intelligence agencies and etc., and you know everything anybody else in the military or etc. knows about blowing buildings up. Sometimes you say you can accept the possibility that more is out there, but you don't act like you really believe it.
Originally posted by Damocles
you ARE looking for a mechanism which makes sense to you and fills the blanks based on the engineering and physics. for you that blank is something someone put there ahead of time as far as i can tell yeah?
in the discussions about CD from a conventional standpoint i think my training and experience is more than sufficient for me to formulate and defend my opinions that conventional explosives were not used.
its the specifics we disagree on bro
im just not willing to make a leap of faith that it was done intentionally by our govt using hypothetical means. so i go with what i know and what i know just wont let me get to that point.
no, youre totally wrong. but the fact remains that at THIS moment, its just that, an anomaly.
once again i dont have enough data to fill that blank in and i wont just arbitrarily insert "random explosive device"
how would i know? because ive done it.
yeah, you'd imagine. and im at a loss as to where ive ever said i was really special or "in the know". what ive said in the past was that i was a grunt. i worked with a lot of spec ops guys. theyve never shared any data on "super secret stuff" that was relevant to the wtc events. so either they didnt know or they werent talking.
because in the end its not the guys planning this that were in those elevator shafts placing charges. the guys doing that probably didnt know jackall more than i do really.
so ya'll have a great day. one attack on my character in a day is enough for me.
Peace
Originally posted by bsbray11
When they put it there wouldn't be so much as important as the fact that whatever *it* is can apparently make multiple connections all around a floor fail simultaneously, instantaneously. But that's definitely along my lines of thinking at the moment, yes.
its the specifics we disagree on bro
What specifics? I don't have any idea what specific devices would have been used,
I only know why anything naturally-evolving from a weakened structure and gravity would be much sloppier and have a slower onset.
im just not willing to make a leap of faith that it was done intentionally by our govt using hypothetical means. so i go with what i know and what i know just wont let me get to that point.
So you don't know the specific mechanism was that failed the buildings, and you're 'not willing to make a leap of faith'?
Essentially you're agnostic, then, and don't believe any specific theory as to what happened to the buildings?
which is why i dont have my own educated theory as to why they fell. im simply not qualified and we simply do NOT have all the information we need.
I don't see how you can possibly form an opinion as to what did happen to them and not be completely hypocritical on this point. Assuming it could happen on its own without having any idea how is the exact same kind of hypothetical 'leap of faith', if that is what you believe.
well its certainly more relevant in the thread i started on the seizmic data, but in that case an anomaly is a blip on a seizmograph that has no overt cause. some fill that blank in with explosives. i want more data. in that example we do NOT know how much damage was done to wtc7. no one can tell me we do, eyewitness accounts vary. theres no photo or video record of the damage available to us. we just dont know. but, theres also no overt signs of any type of explosion of the magnitude it would take to drop that building and register on the seizmographs. (though admittedly i could be wrong as i simply havnt finished my own research into that few second time frame yet. if im wrong ill admit it)
no, youre totally wrong. but the fact remains that at THIS moment, its just that, an anomaly.
What is "an anomaly," exactly? What does that mean in terms of all of these discussions?
But you're perfectly happy to arbitrarily insert "random (yet beautifully symmetrical) failure from impacts and fires"?
how would i know? because ive done it.
You've covertly rigged a building for demolition in which there were special conditions that had to be met as to the sounds it produced, the visuals, the sequence of charges, etc.?
You say you're at a loss as to where you've suggested you would know any other technologies or methods beyond HEs. Then you turn right around and say you've worked with special ops guys before. Maybe I'm confused as to what you're trying to imply? I'd imagine they probably don't talk much about anything they do.
but if they were using conventional demo charges not even forrest gump could be placing those and not knwo what he was doing, particularly once the news came out that the towers fell.
And so they wouldn't really be able to help even if they knew they were planting charges, and even if they knew that's what they were doing and that the towers were going to be blown, I'd think. At least, I wouldn't tell them any more than they needed to know, I don't know who would.
so ya'll have a great day. one attack on my character in a day is enough for me.
Peace
Just for the record, the only reason I got so personal in the last post is because of the way your background has seeped into the discussion.
I still try to express what I think objectively and I'll freely admit that I don't put a whole lot of effort into avoiding sounding like an ass, but it doesn't mean that I'm trying to belittle anything you've done or dislike you in any way as a person. Really I don't feel much of anything when I post and it throws me off to see people taking things personally. I certainly wouldn't mind blowing things up for a living, or any of the education it brings with it. I'm only posting about the relationship between that kind of experience, and what I know of the destructions of the twin towers. Nothing else, and certainly nothing personal. I still appreciate your postings here.
Originally posted by Damocles
dont forget the slamming a jet into the building bit seems that was a pretty key part of the equation that day...
Originally posted by albie
Erm, the top several floors. Didn't you see the video? The top floors fell in one big chunk, with a portion of the central column inside it, it bent over and then fell down inside the structure. …Tonnes of it….
The top floors didn't just turn into powder…. The very act of the central column weakening and being pulled to one side by the top floors slumping over is going to seriously compromise it's strength. Then the top floors, with the top central coloumn inside it, falls right onto the rest of the central column.
People say the central core was built to hold 5 times the weight. But what do they mean by that?...
That's the problem with you guys. You see "built to carry 5 times the weight" and you don't really think that through to the actual circumstance that occured.
Conspiracy theory is BUILT on these misunderstandings?
Originally posted by ANOK
OK so how do you explain building 7 then? No jet plane, no jet fuel...
So instead of just hand waving and screaming 'it was the planes and the fire' you first still have to explain the lack of resistance. Because planes, fires, or Allah's thumb the lower structure would still create massive resistance if the building tried to collapse on itself as the official story claims.
Originally posted by SantaClaus
reply to post by albie
Good theory, and one I've heard often. I'd like a sound, scientific, explanation to all of this.
Again, I don't see this possibility of this NOT being a CD, but if you can explain how many levels fell upon themselves with a "domino" effect, then you have my attention. However, I still don't see conclusive evidence of a CD (the videos don't offer that "flash" effect on EACH floor), but to insinuate that this was a natural collapse is naive to say the least.
So I guess I'm mixed up.
A CD has ALOT of explosives, we didnt see those on 9/11. I Think thermite could be a suspect, but that is almost too obvious for the govmnt to produce. Its so simple, but even thermite couldn't have offered such a perfect blast.
The only debunkers left are those with the "jertfuel" burning theory. Continue to debunk this simple fact, and you will get noticed.
Originally posted by Griff
Originally posted by albie
Consider how tall the building is. Consider how little support that spine would have on the upper sections.
I see no problem with that falling.
Problem is.....it wouldn't fall straight down into itself. See the difference?
BTW, I am a structural engineer.
That does NOT mean that what I say should just be taken as fact. Please do your own research and come to conclusions on your own.
Originally posted by ANOK
Originally posted by albie
Erm, the top several floors. Didn't you see the video? The top floors fell in one big chunk, with a portion of the central column inside it, it bent over and then fell down inside the structure. …Tonnes of it….
Hey no need to get sarky mate, first sign of a frustrated debater, better lay off awhile.
Go take a cold shower…
First off you have to understand how the towers were constructed. The central core was made up basically in 3 lengths welded together at the maintenance floors. So the central core went from the floor to the roof in one mass. The floor pans hung off the sides of the columns, they didn't sit on top of the columns.
You are making a wild assumption in saying the top section ‘fell’ on the lower structure, it didn’t. For that to happen you would have to sever ALL columns AT THE SAME TIME. Impossible from a-symmetrical damage and office fires. And obviously not the case with WTC2 as it the top was at a 23deg angle.
So I ask again what rubble collapsed the central core?
The top floors didn't just turn into powder…. The very act of the central column weakening and being pulled to one side by the top floors slumping over is going to seriously compromise it's strength. Then the top floors, with the top central coloumn inside it, falls right onto the rest of the central column.
Didn't turn into powder? Did you watch the videos? Here's a still for you...
Looks like a lot of powder to me…unless they hadn’t dusted for awhile..
How could the floors put force on the columns when the official stories claim is the floors fell down on top of each other because the spandrel plates failed? The floors, according to the official story, became detached from the central core. So I ask again how did the floors pull the core down?
It’s obvious to me that the top ‘chunk’ didn’t bend any columns but the columns were severed, by perhaps thermate or some other destructive device. The central column structure wouldn’t bend like that, take a look…
Look at that hard, put it into context, and then tell me you really believe what you’re saying?
People say the central core was built to hold 5 times the weight. But what do they mean by that?...
Yes each floor would be designed to carry 5x it's handling capacity. It's called a safety factor. But having said that you are still under the impression the floors fell on floors, they didn't. WTC 2 tilt proves this, look at the top it's leaning at 23deg and undergoing angular momentum. It's physically impossible for it to suddenly become 'too heavy' for the building to hold it up, and even if it did the top would not act like a piston destroying the building, it would continue it's angular momentum and fall off the side taking the path of least resistance. You’re talking about an object’ the top ‘chunk’, falling on a much more massive object, the lower undamaged floors, and expecting the more massive object to not resist the smaller mass. That’s just silly. That is basic high school physics, I don't understand why you guys don't get this?
That's the problem with you guys. You see "built to carry 5 times the weight" and you don't really think that through to the actual circumstance that occured.
You guys? Look you are not reading the posts if you think it just comes down to "built to carry 5 times the weight", you are really not getting this are you? It comes down to basic real world physics. You need to think through to the actual circumstances that occurred, but first brush up on some basic physics.
Conspiracy theory is BUILT on these misunderstandings?
What’s that supposed to mean? You do know what a conspiracy theory is right?
[edit on 14/12/2007 by ANOK]
Originally posted by albie
Why wouldn't it?
Newtons First Law of motion…
If no net force acts on a particle, then it is possible to select a set of reference frames, called inertial reference frames, observed from which the particle moves without any change in velocity. This law is often simplified into the sentence "An object will stay at rest or continue at a constant velocity unless acted upon by an external unbalanced force".
the angular momentum of an object rotating about some reference point is the measure of the extent to which the object will continue to rotate about that point unless acted upon by an external torque
Third Law
Whenever a particle A exerts a force on another particle B, B simultaneously exerts a force on A with the same magnitude in the opposite direction. The strong form of the law further postulates that these two forces act along the same line. This law is often simplified into the sentence "Every action has an equal and opposite reaction".