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Originally posted by charlyv
My point exactly. The core could not hold up the top structures by itself with the massive failure of everything around it.
Source
Open Letter to NIST by Richard Gage, AIA Posted on August 20, 2009 by JF Ranger...
NIST has eliminated the evidence of melted steel documented thoroughly in Appendix C of the former FEMA BPAT report: “rapid oxidation, intergranular melting, sulfidation… evaporation of steel”. The temperatures required for these processes are simply not possible with “normal office fires” which of course the NIST report cites as the cause of this building’s unprecedented catastrophic failure.
The Role of Metallurgy in the NIST Investigation
Conclusions of the Analysis
Floor sagging and inward bowing of an exterior wall were necessary but not sufficient conditions to initiate collapse. In both WTC 1 and WTC 2, significant weakening of the core due to aircraft impact damage and thermal effects was also necessary. The National Institute of Standards and Technology considered the observed performance, evidence, and analysis results for each tower, and reached two conclusions. First, in the absence of structural and insulation damage, a conventional fire substantially similar to or less intense than the fires encountered on September 11, 2001 likely would not have led to the collapse of a WTC tower. Second, the towers likely would not have collapsed under the combined effects of aircraft impact and the subsequent multi-floor fires encountered on September 11, 2001 if the insulation had not been widely dislodged or had been only minimally dislodged by aircraft impact.
The existing thermal insulation, had it not been stripped off in the impact, would have been sufficient to keep the steel temperatures low enough to minimize deformation. Also, the investigation team neither found nor invoked any extraordinary events, beyond the terrorist attack that damaged the structure and removed the insulation, that led to the collapse of the towers....
Neither high-rate tests nor recovered components gave any evidence of brittle failure.
posted by charlyv
Forget all of the molten metal, and what may have happened in the lower levels. The video shows the buildings failing at the level that the planes hit them. Nothing below was going down until the failed structures above smashed everything on its way to the ground.
Many angles, no bomb shocks, nothing on video that would suggest any other helper detonations.
So, to make your conspiracy have legs, you have to explain why that is so, and nothing more. It does not matter if you found a nuclear bomb in the basement, as it would have nothing to do with the buildings failing at the level they were struck, and science proves beyond a shadow of any doubt that the jet fuel fires and massive kinetic destruction at those floors would cause structural failure. Period.
And, if that is so, you do not need anything more to cause total collapse, so everything else becomes a moot point when trying to find root cause.
E.2 INVENTORY OF RECOVERED STEEL
A total of 236 recovered pieces of WTC steel were cataloged; the great majority belonging to the towers, WTC 1 and WTC 2. These samples represented a quarter to half a percent of the 200,000 tons of structural steel used in the construction of the two towers. The NIST inventory included pieces from the impact and fire regions, perimeter columns, core columns, floor trusses, and other pieces such as truss seats and wind dampers.
The original, as-built locations of 42 recovered perimeter panels and 12 recovered core columns were determined, based on markings and geometry of the columns. Samples were available of all 12 strength levels of perimeter panel steel, the two strength levels of the core column steel that represented 99 percent of the total number of columns, and both strength levels used in the floor trusses.
E.3.2 Structural Impact Damage – Core Columns
Failure of the limited number of recovered core columns was a result of both splice connection failures and fracture of the columns themselves. One recovered core column (WTC 2, column line 801, floors 77–80) may have sustained damage as a direct result of the airplane impact; however, the welded
splice to the column above survived intact.
source
Originally posted by charlyv
Forget all of the molten metal, and what may have happened in the lower levels. The video shows the buildings failing at the level that the planes hit them. Nothing below was going down until the failed structures above smashed everything on its way to the ground.
Many angles, no bomb shocks, nothing on video that would suggest any other helper detonations.
So, to make your conspiracy have legs, you have to explain why that is so, and nothing more. It does not matter if you found a nuclear bomb in the basement, as it would have nothing to do with the buildings failing at the level they were struck, and science proves beyond a shadow of any doubt that the jet fuel fires and massive kinetic destruction at those floors would cause structural failure. Period.
And, if that is so, you do not need anything more to cause total collapse, so everything else becomes a moot point when trying to find root cause.
Originally posted by charlyv
science proves beyond a shadow of any doubt that the jet fuel fires and massive kinetic destruction at those floors would cause structural failure. Period.
Maybe the collapse did put out "most" of the fires, however, that dosen't mean the material spontaneously cooled off. Fire is very oppurtunistic. As long as there is adequate air and fuel (and there was plenty of both) it will continue. As for your exotic, military only materials, well there just isn't any rhyme or reason or evidence. Just imagination.
Likely is not the word, it is an absolute. You had burning material trapped under tons and tons of rubble. Smoldering for days and weeks. Real simple, happens all the time, no exotic super secret weaponry. Just plain old fire.
Originally posted by charlyv
Forget all of the molten metal, and what may have happened in the lower levels. The video shows the buildings failing at the level that the planes hit them. Nothing below was going down until the failed structures above smashed everything on its way to the ground.
Many angles, no bomb shocks, nothing on video that would suggest any other helper detonations.
So, to make your conspiracy have legs, you have to explain why that is so, and nothing more. It does not matter if you found a nuclear bomb in the basement, as it would have nothing to do with the buildings failing at the level they were struck, and science proves beyond a shadow of any doubt that the jet fuel fires and massive kinetic destruction at those floors would cause structural failure. Period.
And, if that is so, you do not need anything more to cause total collapse, so everything else becomes a moot point when trying to find root cause.