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cyclonic
13th May 2008, 05:08 AM
The truthers claim that burning jet fuel was not the cause of the collapse, i agree as most of the fuel would be burnt off after 10 mins.

The truthers claim that burning office equipment, furniture etc, has never resulted in a collapse, this is a false claim because most people who do research know that despite not being struck by a boeing 767 the outer steel framing on the upper floors of the windsor tower, Madrid, completely failed leaving the concrete core standing by itself and proving that steel framed buildings can collapse due to an office equipment,furniture,etc. fire and that a concrete building could survive such a fire as shown by the concrete core not collapsing.

This truthers video clearly shows steel framing of the outer top floors collapsing and the next day the concrete core still standing.
(had a good laugh when i found this video,at the truthers lack of thinking.)

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the fire started at 11.00pm on the 21st floor
12.00am all floors above the 21st floor on fire (21-28) news report.
2.00am fire spreads down to 17th floor
4.00 upper steel framing collapses

The fire that started in one spot took 5 hrs to spread and heat up the steel to cause the collapse.

http://upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Top_of_windsor_tower_ruins_.jpg/450px-Top_of_windsor_tower_ruins_.jpg

Could just an office fire have brought down the towers?
we can only speculate.

On 9/11/01 each tower was struck by a boeing 767 traveling at approx.480mph into tower 1, 570mph into tower 2, leaving huge holes in each tower spanning 6 floors, not much wreckage ejected from both towers, the "nose out" wreckage seen to eject from the south tower was likely an inner part of one of the engines from flight 175 with some building debris in front of it.

Both towers have severe damage including fire proofing blown off the columns and trusses from the impacts, but remain standing.

For the first time in history we have 2 all steel frame skyscrapers with massive holes spread over approx.6 floors allowing possibly the best ventilated skyscraper fire in history, a chimney effect as well as the effects from the wind.

Piled up against the core on the 95/96th floor in the north tower and on the north east corner of the 81st floor in the south tower was the shredded fuselage wreckage of a 123 377 kilogram = 271 999.725 22 lb, lbs, 121.428 448 76 long ton (max.landing weight) boeing 767-200 in each tower consisting of 200+ airline seats,plastic interior trimming, floor coverings, rubber and plastic hoses/pipes,hydralic fluids, plastic coated wires, luggage,cargo,tyres, etc,etc.

Set alight by 20,000 gallons of jet fuel in the north tower and 10,000 gallons of jet fuel in the south tower.

Both towers instantly have huge fires in them with no chance of any kind of control.
You can see the wreckage piled up on the northeast corner of the 81st floor in the south tower in this video

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As anyone who has seen aircraft fires, oil well fires,plastic fires, rubber fires, and burning floor coverings knows black smoke is NOT a sign of "oxygen starvation", with the massive holes in both towers this claim is extremely pathetic.

how bad is a jetliner fire? air france flight 358 overran the runway in toronto and ended up in a ravine 300 meters from the end of the runway, fortunately everyone escaped before a fire broke out and engulfed the plane, despite the emergency response teams being on site within 52 seconds of the crash the fire still burned for 2hrs.
As can be seen in this photo, the upper part of the fuselage melted.

http://upload.wikimedia.org/wikipedia/commons/0/0a/Air_France_Flight_358.jpg

AS a matter of fact nearly all plane fires that doesn't involve a crash have had the upper part of their fuselage melt.

Saudi flight 163
http://www.airdisaster.com/special/saudi163.jpg

china airlines fire.

http://upload.wikimedia.org/wikipedia/commons/9/96/China_Airlines_B-18616_fire.jpg


So the fires in the planes reached a minimun 660c/1220f to melt the aluminum.


Truthers are quick to say
"jet fuel doesn't melt steel" - who said it did? alex jones,lol.
"first time in history steel framed buildings collapsed from fire" - wrong.

"An office furniture and equipment fire can't bring down the towers"
We can only speculate on that one.

The facts are that

For the first time in history 2 steel framed skyscrapers were struck by b767s,
suffered major damage , had 6 floors instantly on fire,massive holes supplying oxygen and a shredded fuselage that was burning profusely, almost immediately,in each tower.
high tempatures would be achieved very quickly, making the 5 hrs for the madrid tower steel framing collapse irrelavent.

Minutes after the impacts,the collapses was only a matter of time.

The burning piles of plane wreckage and other debris made it inevitable.

Why don't truthers understand this?

Steven Jones trying to melt steel with a cigarette lighter only proves he is an idiot, this idiot had to be shown how to use a cigarette lighter!

cyclonic
13th May 2008, 01:21 PM
Come on truthers!

ElMondoHummus
13th May 2008, 01:52 PM
Excellent points.

I really need to get back to reading the NIST reports, and see if there are any others out there that might provide furhter information on the effect of the contents fires on the structure. The FEMA report is sort of old, and surpassed by the NIST report, so while that's a good work, that one doesn't count as far as having up-to-date information.

Any of the firefighters on this board know of any "industry" publications that might have dealt with this issue? I know of the ones from http://www.debunking911.com/links.htm, as well as Gravy's site. Anyone have any others? Don't worry if it replicates one from Debunking 911 or Gravy's page; I haven't made it through either site's lists yet.

cyclonic
13th May 2008, 02:08 PM
Excellent points.

I really need to get back to reading the NIST reports, and see if there are any others out there that might provide furhter information on the effect of the contents fires on the structure. The FEMA report is sort of old, and surpassed by the NIST report, so while that's a good work, that one doesn't count as far as having up-to-date information.

Any of the firefighters on this board know of any "industry" publications that might have dealt with this issue? I know of the ones from http://www.debunking911.com/links.htm, as well as Gravy's site. Anyone have any others? Don't worry if it replicates one from Debunking 911 or Gravy's page; I haven't made it through either site's lists yet.

Thanks, the wreckage of the planes burning is a major reason IMHO that the towers collapsed so quickly, as you can see in the plane fires they burn very hot melting the tops of the fuselage, ive been trying to find information on what the frame in the top part of the fuselage was made of and what its melting point is because its gone. truthers try to tell me that the planes desinergrated, riiiigghhhtttt in your dreams.

Mr. Skinny
13th May 2008, 04:19 PM
Thanks, the wreckage of the planes burning is a major reason IMHO that the towers collapsed so quickly, as you can see in the plane fires they burn very hot melting the tops of the fuselage, ive been trying to find information on what the frame in the top part of the fuselage was made of and what its melting point is because its gone. truthers try to tell me that the planes desinergrated, riiiigghhhtttt in your dreams.
(bolding mine)

Well, I suppose you could say that certain parts of the aircraft did disintegrate, depending on the use of the word.

While I doubt the aircraft was vaporized into unrecognizable pieces, it most certainly did not retain its original form, so in that sense, I suppose it did disintegrate.

Just sayin'.

cyclonic
13th May 2008, 09:46 PM
(bolding mine)

Well, I suppose you could say that certain parts of the aircraft did disintegrate, depending on the use of the word.

While I doubt the aircraft was vaporized into unrecognizable pieces, it most certainly did not retain its original form, so in that sense, I suppose it did disintegrate.

Just sayin'.

It certainly did not retain its original form when they hit the towers, and you can see in the molten metal video that the wreckage accumulated in the northeast corner of the south tower and the molten metal coming out of there before the collapse suggest a lot of fuselage was still there, i think shredded is a more appropiate term then disintegrate (sorry about bad spelling) im a bit biased about that word, it reminds me of the daffy duck on planet x cartoons , when he gets vaporized by the disintergrater gun then brought back by the intergrater gun.

what happened to the edit option?

gumboot
14th May 2008, 05:25 AM
Thanks, the wreckage of the planes burning is a major reason IMHO that the towers collapsed so quickly, as you can see in the plane fires they burn very hot melting the tops of the fuselage, ive been trying to find information on what the frame in the top part of the fuselage was made of and what its melting point is because its gone. truthers try to tell me that the planes desinergrated, riiiigghhhtttt in your dreams.


Airliner fuselages are made of aluminium. I would be careful about assuming the top of the fuselage has "gone" or "melted" as it's also possible it has collapsed into the fuselage due to weakening as a result of fire. Most of the flammable material in an aircraft fuselage would be found in the top half, and heat rises, which would explain why the roof of the fuselage is often observed to have been most badly damaged.

cyclonic
14th May 2008, 12:21 PM
Airliner fuselages are made of aluminium. I would be careful about assuming the top of the fuselage has "gone" or "melted" as it's also possible it has collapsed into the fuselage due to weakening as a result of fire. Most of the flammable material in an aircraft fuselage would be found in the top half, and heat rises, which would explain why the roof of the fuselage is often observed to have been most badly damaged.

Good point, i'll look in to later, no time atm.
http://911research.com/essays/pentagon/docs/afc_747fire1.jpg[

This was all that was left of a Boeing 747 after it caught fire while landing.

http://www.abc.net.au/reslib/200703/r130053_429243.jpg

Garuda airlines fire

Architect
14th May 2008, 12:44 PM
Could just an office fire have brought down the towers?
we can only speculate.


How many times do I have to mention the Arup and Edinburgh University papers? Does nobody listen? :rolleyes:

cyclonic
14th May 2008, 07:46 PM
How many times do I have to mention the Arup and Edinburgh University papers? Does nobody listen? :rolleyes:

I am grateful you did as i have never heard of them before, could you please tell me where i can find them?

leonAzul
15th May 2008, 03:02 AM
How many times do I have to mention the Arup and Edinburgh University papers? Does nobody listen? :rolleyes:

Is this what you are referring to?

Behavior of Structures in Fire and Real Design - A Case Study (http://jfe.sagepub.com/cgi/content/refs/16/1/5)

Architect
15th May 2008, 05:22 AM
Nope:

http://www.era.lib.ed.ac.uk/bitstream/1842/1216/1/WTCpaper.pdf

http://www.arup.com/_assets/_download/download353.pdf

DC
15th May 2008, 05:33 AM
Nope:

http://www.era.lib.ed.ac.uk/bitstream/1842/1216/1/WTCpaper.pdf

http://www.arup.com/_assets/_download/download353.pdf


http://www.era.lib.ed.ac.uk/bitstrea...1/WTCpaper.pdf



i think its not a good idea to use fixed points on the core end of the trusses to show how they pulled in the perimeter walls.

cyclonic
15th May 2008, 10:30 AM
Nope:

http://www.era.lib.ed.ac.uk/bitstream/1842/1216/1/WTCpaper.pdf

[U][COLOR=#870000]

Thank you for the links

"The hottest temperatures are expected to exist near the region of the openings where there is sufficient
ventilation. It is very unlikely that the temperatures could have been that high in the interior of compartments
of such a large aspect ratio (height to width) and the consequent resistance to ventilation it
would create (because of the complex multi-cell flow patterns in such geometries). Internal damage
of the core structure could have resulted in a significant increase in the oxidizer supply but numerical
computations have shown that this would have also resulted in significant exterior flames. The video
footage of the events shows dark smoke spewing from the openings caused by the initial impacts for
the whole duration while the buildings remained erect. Thus, the authors favour the hypothesis that
such enhanced ventilation did not exist "

I disagree with their hypothesis, as the planes impacted they pushed/swept
the contents of the floors away from the entry holes, in the north tower the wreckage and debris would of been pushed into and through the core (the drywall is very weak and in this event would be totally useless) these buildings had open spaces between the cores and the exterior columns, any office walls would be moveable petitions, the force of the impacts would clear these areas from entry to core area, for these reasons there were no exterior flames seen at points where the fuselage and each engine entered the building and also explains why people were seen in some of these openings.

"The external columns had three of their faces open to atmosphere that in the absence of external flaming
is inconsistent with high temperatures. Therefore one must conclude that even if there were areas
of high temperature inside the building, it is quite likely that the columns did not heat significantly
(even if they had lost fire protection)"

In this video observe the ferocity of the flames coming out of the northeast corner of the south tower at the 32 sec. mark, it looks as if it is pressurized.
at the 1.17 minute mark you can see the flames coming out of the north tower on the opposite side of the entry hole.

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I will look at the other link soon.

Architect
15th May 2008, 10:45 AM
It is important to remember that the Arup and Edinburgh papers were well publicised and discussed professionally, but not widely accepted. My purpose in posing the question and posting the links was to show that debate/discussion existed, and that some learned sources think that collapse might have occured without the impact - rather than to necessarily support such a position myself.

One of the interesting things, however, is that Truthers have never seriusly latched on to this (presumably because it's too problematic for them).

DC
15th May 2008, 02:02 PM
eh i wanted to read the Document again.

http://www.era.lib.ed.ac.uk/bitstrea...1/WTCpaper.pdf

now the document cant be found. was it moved? or am i the only one that cant open it anymore?

ETA: it works now.

cyclonic
5th February 2012, 11:59 AM
Here is another good video proving my theory, note the aircraft have had cabin fires and that the wings and the wing fuel tanks are intact.

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