[QUOTE=Rochard;18845938]Really? It took me ten seconds to find this on Wikipedia showing me it was clearly well above 500f...
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Originally Posted by Rochard
The NIST found that the fireproofing on the Twin Towers' steel infrastructures was blown off by the initial impact of the planes and that, had this not occurred, the towers would likely have remained standing. A study published by researchers of Purdue University confirmed that, if the thermal insulation on the core columns were scoured off and column temperatures were elevated to approximately 700 °C (1,292 °F), the fire would have been sufficient to initiate collapse.
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Note that there are multiple "ifs" in that paragraph.
More hypothesis.
What the study failed to mention, beyond the fact that collapse could not have been initiated at those temperatures according to NIST, is that the steel would have to have been exposed to those temperatures (actually higher than those) for about three hours before completely collapsing the structure.
Another "if" is the absolute removal of thermal insulation, which is entirely theoretical.
Regardless, the melting point of iron is way above 500f - more like 2800f, or 1500 celcius if you were maybe off in your charts.
Quote:
Originally Posted by Rochard
I would imagine that Iron was present in every possible form when a city of fifty thousand people caught fire and crashed to ground.
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Iron wouldn't turn to fine aerosol form and solidify as hard little droplets if a city caught fire and crashed to the ground unless that city was attacked by powerful elements such as thermite and/or thermate ...
Quote:
Originally Posted by Rochard
Your making mountains of molehills here and it's comical.
There was microscopic particles of iron. All this proves was... There was microscopic particles of iron present - nothing else. There are microscopic particles of iron in glass. Case solved.
Next.
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Iron in this form is present only when temperatures present are high enough that it liquefies and turns into a mist - solidifying upon contact with air and becoming little hard balls.
Explain that.