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Originally posted by GoodOlDave
It is an irrefutable fact that a three story tall bulge in the side of the structure is an anomaly, and a dangerous one since it necessarily means support columns meant to only be positioned straight up and down were now semicircular.
It is also an irrefutable fact that the out of control fires were in the same location as the three story tall bulge which necessarily means there was a corelation between the two, and it is an irrefutable fact that eyewitnesses in the vicinity knew from the poor condition of the building that it was going to collapse.
So if you're going to be trashing everyone else for having no proof, where's the proof from that damned fool NIST report "Dave"?
The NIST report never says their scenario was the definitive reason why WTC 7 collapsed, and in fact they openly state the report was an estimate.
Originally posted by GoodOlDave
I personally subscribe to it because the eyewitness accounts show there was in fact thermal expansion from the fires going on, which gives the NIST account at least some credibility.
Concrete Pulverization
Twin Towers' Concrete Turned to Dust in Mid-Air
In trying to come to terms with what actually happened during the collapse of the World Trade Towers, the biggest and most obvious problem that I see is the source of the enormous amount of very fine dust that was generated during the collapses. Even early on, when the tops of the buildings have barely started to move, we see this characteristic fine dust (mixed with larger chunks of debris) being shot out very energetically from the building. During the first few seconds of a gravitational fall nothing is moving very fast, and yet from the outset what appears to be powdered concrete can be seem blowing out to the sides, growing to an immense dust cloud as the collapse progresses.
The floors themselves are quite robust. Each one is 39" thick; the top 4" is a poured concrete slab, with interlocking vertical steel trusses (or spandrel members) underneath. This steel would absorb a lot of kinetic energy by crumpling as one floor fell onto another, at most pulverizing a small amount of concrete where the narrow edges of the trusses strike the floor below. And yet we see a very fine dust being blown very energetically out to the sides as if the entire mass of concrete (about 400,000 cubic yards for the whole building) were being converted to dust. Remember too that the tower fell at almost the speed of a gravitational free-fall, meaning that little energy was expended doing anything other than accelerating the floor slabs.
Twin Towers' Dust Clouds
Photographic Evidence of Dust Clouds From the Twin Towers' Destruction
The dust clouds that issued from the Towers' explosive collapses were unlike anything seen in the history of man-made structures. Even conventional explosive demolitions of large buildings produced far less dust. Their appearance and rate of travel resembled the pyroclastic flows of volcanoes.
This page lists photographs which show the dust clouds that continued to expand after the waves of destruction that demolished the towers reached the ground. Photographs listed on the collapses page also show a great deal of dust, whose production started within the first second of each collapse.
Ground Zero
Photographic Evidence of the Twin Towers' Remains
These photographs show overall views of Ground Zero, or the central portions once occupied by the Twin Towers and the four other buildings. Photographs specifically of the remains of Building 7 are listed on the Building 7 page.
Aerial photographs
Ground photographs
Photographs during cleanup/excavation
Photographs from nearby buildings
Surrounding buildings
Aerial photographs from NYC's OEM
Photographs by anonymous photographer
Analysis using this evidence
then we must assume that those firemen planted chunks of concrete throughout the pile , right ?
Once again , you are lying when you say all the concrete turned to dust .
Further analysis and photos that prove your claim that all the concrete turned to dust , is nothing but a lie that is being foisted upon those who aren't aware that you are lying :
LOL those are huge chunks of concrete in your pic?
Do you know how large the floors were? Typical of debunkers, you find the 1% that didn't turn to dust.
And please tell me how you know that is from the floors, as I asked, and you didn't show pics of the steel floor pans either. You didn't show me what I asked for that you claimed you had, sorry
More of your 'decomposed' concrete...
There are a few broken pieces of concrete in the bottom of the debris,
Both reports of workers at Ground Zero and photographs of the area attest to the thoroughness of the pulverization of the concrete and other non-metallic solids in the towers. 3 An examination of our extensive archives of images of Ground Zero and its immediate surroundings reveals no recognizable objects such as slabs of concrete, glass, doors, or office furniture. The identifiable constituents of the rubble can be classified into just five categories:
•pieces of steel from the towers' skeletons
•pieces of aluminum cladding from the towers' exteriors
•unrecognizable pieces of metal
•pieces of paper
•dust
Despite the presence of 400,000 cubic yards of concrete in each tower, the photographs reveal almost no evidence of macroscopic pieces of its remains.
Pyroclastic Flows
Many observers have likened the Towers' destruction to volcanoes, noting that the Towers seemed to be transformed into columns of thick dust in the air. An article about seismic observations of events in New York City on 9/11/01, relates the observations of [color=gold]scientists Won-Young Kim, Lynn R. Sykes, J.H. Armitage:
Evidence indicates that the hundreds of thousands of tons of concrete in the Twin Towers was converted almost entirely to dust.
There are a few broken pieces of concrete in the bottom of the debris,
Why do you continue to do this ?
That image is littered with concrete chunks
You are steadily losing any and all credibility you might have ever had , by denying what is obvious to everyone who looks at the evidence .
Please show the calculations you employed to arrive at your 90% versus 10% , just by looking at one image .
This should prove to be entertaining .
And no , I did not "avoid" your article , I countered it with one of my own , which you would have known if you had've read it . Here it is again , for the THIRD time :
911.yweb.sk...
Oh look , I wonder who planted those chunks of concrete in this photo ? Since all of the concrete turned to dust , in mid-air , then we must assume that those firemen planted chunks of concrete throughout the pile , right ?
Once again , you are lying when you say all the concrete turned to dust .
www.uwgb.edu...
This was authored by Professor Steven Dutch , Natural and Applied Sciences ; University of Wisconsin - Green Bay .
It speaks for itself , and shoots holes all through your 90% versus 10% guesstimate . Maybe you'd care to refute it in a logical and educated manner ?edit on 31-1-2011 by okbmd because: eta
It speaks for itself , and shoots holes all through your 90% versus 10% guesstimate . Maybe you'd care to refute it in a logical and educated manner ?
Technical Articles
Originally posted by okbmd
And , how can you estimate that only "1%" didn't turn to dust , just from the images I offered ? Oh wait , that's just more truther logic .
Originally posted by bsbray11
Originally posted by GoodOlDave
It is an irrefutable fact that a three story tall bulge in the side of the structure is an anomaly, and a dangerous one since it necessarily means support columns meant to only be positioned straight up and down were now semicircular.
Right, and can you show us the picture of this three-story bulge again?
Actually even NIST says the debris damage was insignificant to global collapse, and there were also people on the ground who said there was no way it was giving any indication it was about to do what it did, and also people that were witnesses to explosions in the building. Anyone who predicted a collapse wasn't basing the prediction on any established science since this was a total first, and the word "collapse" doesn't even begin to paint the full picture of a 47-story skyscraper sinking straight down into its footprint, accelerating at the rate of gravity.
Then you must be the ultimate hypocrite. You demand rigorous proof of everything from everyone yet don't base your own preconceived ideas on the same standard. I suppose you also think an "estimate" is good enough for 9/11 and we don't really need to know for certain why they fell.
Originally posted by PonyoSon
Anyway, Dave i notice you say eyewitnesses add credibility to the NIST report. so then does that mean that eyewitnesses that heard and saw explosion add credibility to so a controlled demo theory?
How do you decide what eyewitnesses are credible and which ones aren't? you can't really argue that only the eyewitnesses that support the OS are credible can you, that's not very fair is it? I mean i've seen a few videos of people saying they saw/heard explosions(even some in the basement).
Originally posted by GoodOlDave
If such pictures exist, I don't have them. I'm going by eyewitness accounts, and the eyewitness accounts didn't come from some drunk guy lying in his own urine in the gutter, nor did it come from the speculation of some researcher who was over in Los Angeles at the time. It came from a deputy fire chief of the NYFD who was standing there fighting the fires in WTC 7 who reported this. Noone has been able to suitably point out why his testimony isn't credible.
Originally posted by PonyoSon
I try to have an open mind to the things you write Dave but you are not being logical here, I have yet to see any urine drenched 911 witnesses (would you please show me were i can see this info), plus i don't think there were many homeless people hanging around the world trade center (again i could be wrong), but i lived in NYC for 5 years and the majority of the homeless tend to reside is other parts of the city.
Originally posted by GoodOlDave
Easy- I assume ALL eyewitnesses who were there are credible, unless a legitimate reason can be shown for why it isn't. One eyewitness claimed to have seen a predator drone hit the Pentagon, but his own son says the eyewitness was in Maryland at the time and wasn't near the Pentagon to even be an eyewitness. Another person inside the Pentagon filed a lawsuit claiming that it wasn't a plane that ht the Pentagon, but she couldn't see outside and wouldn't know what it was that hit the Pentagon one way or the other. You get the idea.
Noone is denying that witnesses heard explosions. We even heard explosions on the news coverage on that day. What you're failing to comprehend is that the building was chock full of flammable objects that would go BOOM in a fire (electrical transformers, pressurized pipes, or what have you), so if even one of the explosions came from a component of the building that would go BOOM in a fire then we logically have to presume they all came from components of the building that would go BOOM in a fire, particularly when they were randomly going BOOM as the fires reached them in turn, rather than a mathematically coordinated BOOM as controlled demolitions would have been.
There problem isn't with the evidence. The problem is with the conspiracy people seeing what they themselves want to see in the evidence.edit on 1-2-2011 by GoodOlDave because: (no reason given)
Originally posted by GoodOlDave
Originally posted by PonyoSon
I try to have an open mind to the things you write Dave but you are not being logical here, I have yet to see any urine drenched 911 witnesses (would you please show me were i can see this info), plus i don't think there were many homeless people hanging around the world trade center (again i could be wrong), but i lived in NYC for 5 years and the majority of the homeless tend to reside is other parts of the city.
Do you ever actually read my posts before you comment on them? I'm not quoting any homeless guy lying in his own urine. I'm quoting NYFD personnel and I consider his testimony as being credible because is ISN'T a homeless guy lying in his own urine. I used that analogy because crackpots have always come out of the woodwork to throw bizarre monkey wrenches into the mix, and you shouldn't be mindlessly quoting such people simply becuase they happen to be saying things you want to be true.
There was one guy who claimed he saw a predator drone hit the Pentagon but it subsequently turned out he was nowhere near the Pentagon on 9/11 and he was making things up. I remember back during the Long Island railroad shooting how one guy on the train testifies the shooter ran amok becuase he had a computer chip on his neck and he was being directed to shoot people by remote control. There was one immensely obese guy wearing women's clothes in the courtroom during the OJ Simpson trial who was thrown out becuase he was eating twinkies. I'm NOT making this stuff up, guy.
...and what does this have anything to do with lasers melting steel/rock with an energy beam, anyway?
...and what does this have anything to do with lasers melting steel/rock with an energy beam, anyway?
Originally posted by ANOK
Newtons 3rd law tells us that colliding bodies exert equal force on each other. You've got approx. 30 floors dropping on 80 floors, if floors are being destroyed then both the colliding floors must be destroyed (equal forces on equal masses will create equal damage). The collapse should have stopped around the 50th floor, as the top section would have ran out of floors by this point. But of course that is way too simple, as you would also be losing mass and velocity due to resistance, so 50th floor is VERY generous. And we all know from video evidence the collapse didn't happen that way anyway, the top section was losing floors before the bottom started to collapse. But then of course no one can even explain how it all started collapsing in the first place.
So no there is not enough concrete left post collapse, there should have been whole floors left if the OS is to be believed.
Originally posted by Varemia
Originally posted by ANOK
Newtons 3rd law tells us that colliding bodies exert equal force on each other. You've got approx. 30 floors dropping on 80 floors, if floors are being destroyed then both the colliding floors must be destroyed (equal forces on equal masses will create equal damage). The collapse should have stopped around the 50th floor, as the top section would have ran out of floors by this point. But of course that is way too simple, as you would also be losing mass and velocity due to resistance, so 50th floor is VERY generous. And we all know from video evidence the collapse didn't happen that way anyway, the top section was losing floors before the bottom started to collapse. But then of course no one can even explain how it all started collapsing in the first place.
So no there is not enough concrete left post collapse, there should have been whole floors left if the OS is to be believed.
Apologies, but are you dense? This makes no sense at all!
If you had all other factors being equal, MINUS GRAVITY, the forces would balance out and the building would cease its collapsing. However, with gravity and the fact that the force does not completely dissipate upon demolishing a single floor, the collective debris becomes heavier and more kinetically active as it progresses downward. You can see proof of this looking at many other things.
FOR EXAMPLE:
If you remember some of those controlled demolitions of skyscrapers that went wrong, it was because when they blew the bottom support, the building began to fall and the earth resisted all the force, having far more mass with which to absorb energy. Plus the fact the building was a concrete exoskeleton in the one I"m thinking about. Regardless, it is an example of the physics.
This presentation is absolutely convoluted and you cannot say that the destruction defied physics when clearly you are misunderstanding the forces involved.
Take this to the boat and sink it!