NEVER FORGET: JET FUEL MELT STEEL BEAMS BUT NOT PASSPORT PAPER
(media.greatawakening.win)
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That would have to include you. If steel loses 80% of its strength, all the structural margins are gone and collapse is the inevitable result.
C'mon man, if you've done construction, you know someone screwed up something and wrote an RFI to get the engineer to sign off on what can't be changed and that margin is gone before the building ever sees a fire. Isn't that how the Hard rock cafe in New Orleans came down?
Your point eludes me. Are you saying there is cause to suspect the buildings to have been faulty in their construction?
BTW, thank you for being a voice of reason
And thank you for noticing. I sometimes feel like a steel column withstanding the crash of fixed minds...
There's way, WAAY too much steel for such a weakening to even start being a remote possibility. There's not NEARLY enough heat in those fires, and way too much ongoing dissipation.
Steel framed buildings stood after burning much hotter and much longer, plenty of times.
You arm-wave but provide no quantitative rationale. Plenty of heat in a closed-box fireplace burning 50 tons of kerosene. Enough to heat the structural steel to 30% or less of its room-temperature strength. All you need to do is reduce the strength margins to zero for a catastrophic collapse. No ordinary building would have so much high-energy-density fuel to combust. There is some basis for thinking that some of the aircraft aluminum contributed to the combustion.
clueless even on the basics, not worth my time
Are you the one with a engineering degrees in aeronautics? Who worked for Boeing for 40 years and was familiar with how their airplanes were constructed? Who can explain what happened without reference to any government story? What "basics" do you think you bring to the table?
Unless youve done the math and can show us, your guess is as good as anyone elses.
You obviously have to be quite clueless to believe any kind of office fire and some jet fuel (which was mostly gone right after the initial fireball) can cause heat that is even remotrly sufficient to weaken 1-2 inch thick steel.
So how thin would the steel have to be to be weakened by jet fuel?