Re: Electron microscope analysis of steel spheres from WTC site
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Kaj, I just addressed all the issues you posted. Namely
how hot the fires burned at
how much load rating the steel had
how weak the steel was at this temperature
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No you didn't at all.
The steel engineer just said in my post that steel has about 10% of its original strength at 1800F, which is about where they figured the fire was at with exposed steel members (no fire-proof insulation). Your retort is a 6x safety factor? Do some quick math.
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Sources for your 1800 F figure?
How many high rise buildings have gone down due to fire in the history of high rise buildings besides 9/11?
How hot do you believe jet fuel to burn at?
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