The facility shall ensure its ducts are constructed of iron, steel, aluminum, or other approved metal or materials as defined in NFPA 101 Life Safety Code 2012 edition, section 32.3.6.2.1. Duct linings, coverings, vapor barriers, and the adhesives used for applying them must have a flame spread index of not more than twenty-five and a smoke emission rating of not more than fifty using ASTM E84-23D 2010 edition, Standard Test Method for Surface Burning Characteristics of Building Materials. A fire and smoke damper must be provided on each opening through each required two-hour or greater fire-resistive wall or floor and on each opening through the walls of a vertical shaft, unless the shaft has a fire and smoke damper at the floor level. Access for maintenance must be provided at all dampers. Each duct system serving hood must be constructed of corrosion resistant material. Each cold air duct must be insulated wherever necessary to maintain the efficiency of the system and to minimize condensation problems.

References: ASTM E84-23D, 2010 edition, Standard Test Method for Surface Burning Characteristics of Building Materials. Copies may be obtained at https://www.astm.org/e0084-23d.html. Cost: $119.00.

NFPA 101 Life Safety Code, 2012 edition, National Fire Protection Association. Copies may be obtained at . Cost: $160.00.

Source: SL 1975, ch 16, § 1; 4 SDR 14, effective September 14, 1977; 6 SDR 93, effective July 1, 1980; 14 SDR 81, effective December 10, 1987; 22 SDR 70, effective November 19, 1995; 26 SDR 96, effective January 23, 2000; 27 SDR 59, effective December 17, 2000; 29 SDR 81, effective December 11, 2002; transferred from § 44:04:13:28 , 42 SDR 51, effective October 13, 2015 ; 51 SDR 53, effective November 11, 2024 .

General Authority: SDCL 34-12-13 .

Law Implemented: SDCL 34-12-13 .

Prior versions effective: 2015-10-13.