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Degree to which fire can spread over the surface of the material is technically referred to as the?
Surface burning characteristics of the material
Materials with class A rating 0 - 25 are required in_______ _______ of most occupancy.
Vertical exits
Total amount of heat produced or released to the atmosphere from the convective lift fire phrase of a fire per unit mass of fuel consumed for unit time.
Heat release rate
The first efforts at evaluating and controlling the combustibility of interior finish materials after several disastrous Hotel fires in the_______
1940s
Numerical rating assigned to a material based on the spreed and the extent to which flame travels over its surface.
Flame spread rating
Unofficial name for the test used to determine the flame spread of ratings of various materials.
Steiner tunnel test
ASTM E84, UL753, NFPA 255
Tunnel test ( Steiner)
Ability of a substance to do harm within the body.
Toxicity
Ability of a substance to Vaporize easily at relatively low temperature.
Volatility
Any substance, except plain water, that is applied to another material or substance to reduce the flammability of fuels or slow the rate of combustion by chemical or physical action.
Fire retardant
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