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not the first 'september 11 was a hoax' documentary I watch. Of course, because a bystander didn't see any windows on the side of the plane, that means there were no windows on the side of the plane.P43.2/1Gig/X800P said:I just watched this thought it was interesting
I dont know what to believe!!!;(
http://video.google.com/videoplay?docid=-2023320890224991194&q=loose+change
clarky003 said:
clarky003 said:Well I find it odd that alot of structural engineers at universities and so forth are divded on the issue, and if you read the NIST and FEMA report's the origional anlysis shows that the structural engineers you seem to hold in high praise forgot to include or purposely ignored thermal conduction in their theory, which isnt very proffessional atall, infact its a ridiculous error.
clarky003 said:Well I find it odd that alot of structural engineers at universities and so forth are divded on the issue, and if you read the NIST and FEMA report's the origional anlysis shows that the structural engineers you seem to hold in high praise forgot to include thermal conduction in their theory, which isnt very proffessional atall, infact its a ridiculous error.
clarky003 said:but in reality all that heat would dissapate through the entirity of the steel structure through conduction, helping heat escape and cool from the area much more rapidly.
I'd need a way more official site than that to even consider their claim. I'm especially not going to believe a site that has been attacked by both Scientific American and Popular Mechanics concerning validity.
I mean, while we're at it, we may as well believe that the 9/11 hijackers were brainwashed by psychiatrists, who were the real masterminds behind the attacks.
I'd like to see the calcs that prove that. Dont' forget that all of the "steal structure" not directly within the impact zone is covered with thick insulation. Your thermal conduction model does include highly insulated steel right?
clarky003 said:then heat would be transfered directly into the steel structure, its all cross connected so the exposed steel would conduct heat through to the rest of the steel in the whole core. They keep conduction limited to the impact area which fits the theory creating more heat thats needed for it to work, but conduction wouldnt be limited to just that area in a still connected structure and can make hudge differences to temerature's especially when theres so much extra steel for the heat to travel into.
anyway my point, is if they say the steel area NIST says was exposed to fire they cant ignore proper thermal conduction which they appear to have done.
clarky003 said:well thats a funny assumption because its not actually about exposed surface area
A is the transversal surface area
clarky003 said:In a large steel building core its also about the volume capacity of the steel, thats conduction transference your on about if you heat the end of a long steel rod and the heat is concentrated on the end not a direct flame as you claimed, it will still dissapate throughout the length of the rod lowering the heated ends surface temerature, the longer the rod the more heat can be drawn away over time.
So assuming that small areas where exposed.. to not allow better more overall conduction like your saying, it still goes against FEMA and NIST's theory that conduction was limited even though large areas of steel where exposed, the theory you support.
So assuming that small areas where exposed.. to not allow better more overall conduction and faster heating like your saying, along with FEMA and NIST's theory that conduction was limited even though unknown areas of steel where stripped of insulation in the collision and exposed.. how does that lead to molten pools of steel when the most intense jet fuel and conventionally fueled fires can just about get near the structural weakening point of steel not even anywhere near melting point, and then a symmetrical collapse of the core... when heat cant possibly transfer equally across all supports to weaken it all in symmetry to fall in its own footprint.. and not to mention happening consecutively 3 times in one day.
# The rubble of the Twin Towers smoldered for weeks after the collapse. Peter Tully, president of Tully Construction of Flushing, N.Y, observed "literally molten steel" at the WTC. This was also mentioned by Mark Loizeaux, president of Controlled Demolition, Inc. The melting point of un-fireproofed steel is around 2750 °F (1510°C) while the highest speculation regarding temperatures inside the twin towers circled 2000 °F (1093°C). According to Farid Alfawak-hiri of the American Institute of Steel Construction, “Steel loses about 50 percent of its strength at 1100°F (593 °C).” Asif Usmani of Edinburgh University concluded that the interconnecting beams of the towers could have expanded by around 9cm at 932 (500°C) degrees Fahrenheit, causing the floors above to buckle. The molten steel observation has not be elaborated on or picked up by most news groups. The observation of molten metal at Ground Zero was emphasized publicly by Leslie Robertson, the structural engineer responsible for the design of the World Trade Center Towers, in a second hand account by James Williams who reported, “As of 21 days after the attack, the fires were still burning and molten steel was still running.” Sarah Atlas, of New Jersey's Task Force One Urban Search and Rescue, one of the first on the scene said, “Fires burned and molten steel flowed in the pile of ruins…” (Penn Arts and Sciences, Summer 2002). Similarly, Dr. Allison Geyh, a public health investigator from Johns Hopkins, recalled in the late fall 2001 issue of Magazine of Johns Hopkins Public Health, "In some pockets now being uncovered they are finding molten steel.” Verifying the validity of these molten steel sightings has proven difficult; NASA's satellite images of Ground Zero hot spots suggest the temperatures were not nearly hot enough, particular after 21 days, to produce “literally molten steel.”[2]
It has been observed the Twin Towers fell straight down, at close to free-fall speed. This is a similar characteristic of a controlled demolition. Dr. Thomas Eagar, professor of materials engineering and engineering systems at the Massachusetts Institute of Technology, has stated that the building “would have had to have tipped at least 100 feet to one side in order to move its center of gravity from the center of the building out beyond its base.” In other words, the structure had no choice but to fall straight down, following the path of least resistance. As far as the speed, a consensus has yet to be reached as to the exact duration of the fall. The most widely used number is at 10 seconds. Objects breaking away from the collapsing towers are photographed falling faster than the actual building, indicating the structure was not in a true free fall as in the case of typical prepared demolitions.
clarky003 said:You would have to figure out what area was exposed, which isnt known.. to get anything accurate out of it, you would also need to not just include one beam but its welded connected beams.
The molten steel in the basement, is by far the biggest anomalie and isnt addressed, nor are any of the demolishion characterisitic's.. The conversations gone a bit too technical, its a simple matter that NIST didnt bother with conduction transference atall, and steel is still a good conductor... the fact it was never even done wasnt even explained. They obviously felt the same as you, and just simply ignored any impact of an interconnected structure even if it it was the assumption that it wouldnt have an impact.. and because of the assumed large exposure it should of still been tested.
You wouldn't necessarily have to know the exposed area. The reason I suggested doing the calc for one beam is that then you have a base number to work with. If you know how much one beam can transfer then you can easily know how much 200 beams can transfer. Playing around with the data you could come up with some rough estimates of just how many beams it would take to significantly affect the fires temperature. Depending on the data you may then be able to show the heat transfer through the steel structure was either significant or insignificant if for example you got that it only took five beams or for example if it took 10,000 beams.
You do bring up a good point concerning the connections. This actually further supports my point in that the connections between beams are going to have an even smaller cross section and thus act as a bottleneck with respect to heat transfer.
My opinion is that they probably didn't ignore the aspect of conduction at all. I imagine heat conduction through steel structures has been rather well studied and there are probably even codes for it. If it's not in the report I would venture to guess that it was automatically known to be insignificant from existing knowledge.
clarky003 said:Through proffessional etiquet atleast they should aknowledge why they didnt feel the need to mention it, its not what I call thorough, a hell of alot of questions arnt answered.
The video is primary evidence, but the interpretations of it are done by nobodies - any idiot can write what he pleases on the internet.clarky003 said:The video is as credible as any other video taken by the public, it just hasnt been lapped up by a mainstream media corporation.
Its clear the rewinding is focusing on the visual's sounds and timing of the event, not the peoples reactions.
craig said:I like the fact that so many people are dismissing the contents of this video without even watching it and calling anyone who does watch it a 'conspiracy nutcase' because they refuse to believe that a govornment (specifically the American govornment) is capable of commiting such an atrocity.
The clincher for me (the reason I think 9/11 was a filthy US Govt. planned event) is Iraq and how quickly Dubya and he cronies 'war on terror' moved on to Iraq.
Anyone who's studied the Invasion of Iraq even a little bit will know that upon invasion the first concnern of the US led coalition had was the securing of the oil fields while facilities such as hospitals were left for people to ransack.
*cough* WMDs *cough*
craig said:Well look at 7/7 (eugh!), are you seriously telling me those 4 men worked alone? They were part of a network that manages to remain pretty silent about its actions.
A big power like the US govornment could quite easily silence anyone involved. Say they got 30 men to carry out the WTC attacks.. now knowing these men had a concience, say they got another 30 men to kill these men (citing false reasosn for the need to assasinate them). Speculation? Yes, but it would remove the need for worrying about 'staying silent'..
ComradeBadger said:The video is primary evidence, but the interpretations of it are done by nobodies - any idiot can write what he pleases on the internet.
A ****ING PLANE HIT THOSE TOWERS AND MILLIONS OF MASSIVE BURNING DEBRIS FELL OFF
P43.2/1Gig/X800P said:Why were all the survailliance cameras taken by FBI from the pentagon? Why didnt they want to show what really happen ? I didnt see a plane fly into the pentagon ... I saw a missle though.
Easily. There was no plane to be found. Yet they say a plane crashed into the pentagon created a 16 foot wide hole.. No wings, nothing. Just little tidbits that could be picked up by hand. That doesn't make sense at all.Mutley said:The Pentagon conspiracy is by far the most intresting.