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5100 Insert ACC
C. Calculating Alternate Floor Protection
Material
Thermal Resistance: R value
The R value is a measure of a material's resistance to heat
transfer.
R value is convenient when more than one material is used
since you can add the R values together, whereas you can
not do this for k value.
The HIGHER the R factor means less heat is being
conducted through the non-combustible material to the
combustible material beneath it.
The R value of a material must be equal or larger then the
required R value to be acceptable.
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7047-910J
January 13, 2020
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