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Rate of Heart Release from Wood-Base Building Materials Exposed to Fire
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Description:
Data on the "potential total heat release" or
on the "rate of heat release" has been sug
gested as means of defining combustibility of
materials in building code regulations, and
would replace the present "noncombustibility"
requirements. Rate of heat release data on
several types of wood-base materials and con
structions were determined under fire exposure
in an FPL (Forest Products Laboratory)-
developed, gas-fired, water-jacketed furnace.
Materials evaluated include Douglas-fir ply
wood (untreated and fire retardant treated),
high-density hardboard, red oak lumber, rigid
insulation board, and particleboard. Among the
constructions were a plywood-faced polyurethane
foam sandwich panel and assemblies
of both fire-retardant-treated and untreated
Douglas-fir studs and gypsum wallboard
facings. The results indicate that fire-retardant
treatment of wood greatly reduced the max
imum rate of heat release. Rate of heat release
for treated wood studs compared to untreated
was reduced when both were protected with a
gypsum wallboard facing. This work provides
both a potentially useful measurement of
combustibility and additional information on
fire performance of wood-base building mat
erials.
File Size:
3.1 MB
Downloads:
141
File Author:
JOHN J. BRENDEN
Submitted On:
05 Jul 2011
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