[GSBN] Fire Case Studies

[RWT]

on Wed, 13 Jun 2018    bob at bobtheis.net wrote Re: [GSBN] Fire case studiesMessage-ID: <CEF3C68A-587A-47F1-8F0F-5E3D64323F1F at bobtheis.net>
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> Makes me wonder if these massive-looking  bale walls register subliminally as masonry, > so people drop their inherent caution about keeping combustibles away from fire.  

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Bob and PyroBaleHeads;
I have vague memories from years ago of masonry stove builder extraordinaire/engineer Norbert Senf  'splainin' to us on one of the SB lists the phenomenon of thermal decomposition of cellulosic materials like wood framing (and by corollary straw bales) in inert environments like wall and ceiling cavities when subjected to long-term exposure  to elevated temperatures as would happen when proper clearances aren't provided between the cellulosic material and wood burning appliances, exhaust flues and such-like.  If I remember correctly, chemical changes to the cellulosic material takes place that results in a lowered ignition point of the material so that an assembly that otherwise might not burst into flame, will unexpectedly ignite .    I've copied Norbert on this message and hopefully he may find a moment to point out how badly my memory had faltered.  
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