and you all feel comfortable with the amount of time (couple hours) that these buildings burned, to be suffice to pancake the floors of this over-engineered building with 47 vertical columns fire-retardant insulated (that carries an r-value) steel ibeams? commercial office interior doors, have a 90 minute fire-rating for instance. i don't know the rating of the load bearing beams, but i can bet it's much more than 90 mins. very close call, seeing how the buildings didn't burn much more than 2 hrs.
(this isn't research that i read, this is what i know as a builder. there are dampers between verticals, firestop applications between horizontals, so much protection to keep fires from spreading, but that's neither here nor there.)
i can't deny it with solid proof, but i know even when i try to heat some copper pipe with benzo propane or mapp gas, if there is even a drop of water in that pipe near the joint i'm heating, it will take substantially longer to heat that section of pipe, not even enough to melt or deform it, simply enough to melt the flux and heat the silver/lead wet enough to complete the joint. untreated copper heats at such a lower temperature than treated steel. sprinkler systems going off in the building will have wet everything on those floors too, helping to cool what the fire is heating or at minimum raising the amount of time that it would take to raise the temperature.
if the fire in the wtc eventually heated the metal structure enough enough to fall it, then you guys are right and i'll admit i'm wrong. won't be the first time. but you all are leaving no room for being wrong and i don't get how you're so sure of yourself. this entire collapse is unprecedented in history. (go googlers, catch me in a lie).
(this isn't research that i read, this is what i know as a builder. there are dampers between verticals, firestop applications between horizontals, so much protection to keep fires from spreading, but that's neither here nor there.)
i can't deny it with solid proof, but i know even when i try to heat some copper pipe with benzo propane or mapp gas, if there is even a drop of water in that pipe near the joint i'm heating, it will take substantially longer to heat that section of pipe, not even enough to melt or deform it, simply enough to melt the flux and heat the silver/lead wet enough to complete the joint. untreated copper heats at such a lower temperature than treated steel. sprinkler systems going off in the building will have wet everything on those floors too, helping to cool what the fire is heating or at minimum raising the amount of time that it would take to raise the temperature.
if the fire in the wtc eventually heated the metal structure enough enough to fall it, then you guys are right and i'll admit i'm wrong. won't be the first time. but you all are leaving no room for being wrong and i don't get how you're so sure of yourself. this entire collapse is unprecedented in history. (go googlers, catch me in a lie).
they can land a rover on mars, yet they still have to stick a human finger up my ass to do a prostate exam?! - ricky gervais
