daws101
Diamond Member
- Banned
- #161
Recently reported fire tests have demonstrated that structural steel columns under a sustained load of about 70% of their cold strength collapse when heated to 250° C." –Zdenek Bazant, Discussion of “Mechanics of Progressive Collapse: Learning from World Trade Center and Building Demolitions”Ok, you've convinced me.800 degrees is more then enough heat to WEAKEN STEEL TO THE POINT OF FAILURE WHEN IT'S CARRYING A LOAD.NO MATTER WHAT GRADE THE STEEL IS.
NOT!
Nice try though...really...![]()
game, set, match!
![eusa_whistle :eusa_whistle: :eusa_whistle:](/styles/smilies/eusa_whistle.gif)
http://www.civil.northwestern.edu/people/bazant/PDFs/Papers/D25 WTC Discussions Replies.pdf
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