S.D. Admin. R. 44:70:10:21

Current through Register Vol. 51, page 67, December 16, 2024

Section 44:70:10:21 - Ventilating systems

The ventilating systems must maintain temperatures, minimum air changes of outdoor air an hour, minimum total air changes, and relative humidities as follows:

(1) For all occupied areas, the facility shall be able to maintain a minimum temperature of 75 degrees Fahrenheit or 23.9 degrees centigrade at winter design conditions with a minimum of at least two total air changes an hour. Each air supply and air exhaust system must be mechanically operated. Any outdoor ventilation air intake, other than for an individual room unit, shall be located as far away as practicable but not less than 25 feet or 7.62 meters from any plumbing vent stack and the exhaust from any ventilating system or combustion equipment. The bottom of any outdoor intake serving a central air system must be located as high as possible but not less than three feet or 0.91 meters above the ground level. Each mechanical ventilation system must be designed and balanced to provide make-up air and safe pressure relationships between adjacent areas to preclude the spread of infections and assure the health of the occupants. Each room supply air inlet, recirculation inlet, and exhaust air outlet must be located with the grill or diffuser opening not less than three inches or 0.08 meters above the floor. A corridor may not be used to supply air to or exhaust air from any room, except that air from a corridor may be used to ventilate a bathroom, a toilet room, or a janitor's closet opening directly on the corridor. Mechanical exhaust ventilation must be provided in all soiled areas, wet areas, toilet rooms, and clean storage rooms. In any unoccupied service area, ventilation may be reduced or discontinued if the health and comfort of the occupants are not compromised;

(2) Each cooking appliance, other than a microwave oven, must be provided with exhaust ventilation to the exterior of the building to remove cooking odors, heat, and moisture. Each cooking appliance installed in a resident room must be equipped with a recirculating fan equipped with a charcoal filter or may be exhausted to the exterior to remove cooking odors, heat, and moisture;

(3) Each vehicle parking garage must be provided with carbon monoxide detection to activate exhaust ventilation of six air changes each hour or to open the garage door if the area of the garage is under 1000 square feet; and

(4) Each crawl space must be provided with mechanical ventilation of at least 0.5 air changes each day or be provided with open perimeter venting as required by the International Building Code.

S.D. Admin. R. 44:70:10:21

38 SDR 115, effective 1/9/2012; 46 SDR 065, effective 11/26/2019; 50 SDR 019, effective 8/30/2023

General Authority: SDCL 34-12-13(1)(3)(4).

Law Implemented: SDCL 34-12-13(1)(3)(4).

International Building Code, 2012 edition. Copies may be obtained from International Code Council at https://shop.iccsafe.org/. Cost: $81.75.