California Business and Professions Code
§ 19020
BPC § 19020Div. 8 · Ch. 3 · Art. 1
Statute text
View on leginfo.ca.gov“R-value” means a measure of thermal resistance of material or composite materials. “R-value” is equal to the reciprocal of the conductance of a given material, orR-value = 1 conductance of the material where the conductance of the material is: Btu (hour × square foot × Fahrenheit degree average temperature difference between two surfaces).
Legislative history
Added by Stats. 1984, Ch. 1456, Sec. 3.