[AR] Re: Cold tests this weekend
- From: Henry Spencer <hspencer@xxxxxxxxxxxxx>
- To: Arocket List <arocket@xxxxxxxxxxxxx>
- Date: Tue, 13 Sep 2016 11:43:31 -0400 (EDT)
On Tue, 13 Sep 2016, Uwe Klein wrote:
Ablative burning of wood gives high resilience
under fire conditions ( i.e. wooden ceiling beams tend to
stand up to fire longer than unprotected steel beams.
Mind you, that's not because the steel melts or burns, but because it
loses much of its strength and so the building collapses. (Which is why a
lot of older steel-framed buildings have asbestos problems -- the steel
beams are required to be insulated, to delay collapse and give people more
time to get out, and spray-on asbestos mixtures were popular for that.)
So it's a somewhat different situation.
Henry
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