Business and Professions Code - BPC
DIVISION 8. SPECIAL BUSINESS REGULATIONS [18400 - 22949.80]
( Division 8 added by Stats. 1941, Ch. 44. ) CHAPTER 3. Home Furnishings [19000 - 19221]
( Heading of Chapter 3 amended by Stats. 1972, Ch. 749. ) ARTICLE 1. General Provisions [19000 - 19022]
( Article 1 added by Stats. 1941, Ch. 46. ) 19020.
“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, or
R-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).(Added by Stats. 1984, Ch. 1456, Sec. 3.)