Originally Posted by
Tony Szamboti
Because it never happened before. Structural steel in high rises is massive and takes a significant amount of heat and time to weaken. There usually isn't enough fuel in a given area of an office fire to cause much weakening. That is most likely why it hasn't happened before.
The fires in WTC 7 did not burn all day in a specific area. They burned out when the fuel was used up in a specific area
This from an engineer...............
My GF and I watched the Wizard of Oz the other day.........pay no attention to what's behind the curtain.