S.D. Admin. R. 44:76:11:19
The ventilating systems shall maintain temperatures, minimum air changes of outdoor air an hour, minimum total air changes, and relative humidity as follows:
For all other occupied areas, the facility shall be able to maintain a minimum temperature of 75 degrees Fahrenheit (23.9 degrees centigrade) at winter design conditions with a minimum of at least two total air changes an hour and a relative humidity of 20 percent. All air supply and air exhaust systems shall be mechanically operated. All fans serving exhaust systems shall be located at the discharge end of the system. Outdoor ventilation air intakes, other than for individual room units, shall be located as far away as practicable but not less than 25 feet (7.62 meters) from plumbing vent stacks and the exhausts from any ventilating system or combustion equipment. The bottom of outdoor intakes serving central air systems shall be located as high as possible but not less than six feet (1.83 meters) above the ground level or, if installed through the roof, three feet (0.91 meters) above roof level. The mechanical ventilation systems shall 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. Room supply air inlets, recirculation, and exhaust air outlets shall be located with the grill or diffuser opening not less than 3 inches (0.08 meters) above the floor. Corridors may not be used to supply air to or exhaust air from any room, except that exhaust air from corridors may be used to ventilate bathrooms, toilet rooms, or janitor's closets opening directly on corridors. Continuous mechanical exhaust ventilation shall be provided in all soiled areas, wet areas, and storage rooms. In unoccupied service areas, ventilation may be reduced or discontinued when the health and comfort of the occupants are not compromised.
Laboratories shall be ventilated at a rate of six total air changes an hour. All ventilation air from the laboratory shall be directly exhausted to the outside. If this ventilation rate does not provide the air required to ventilate fume hoods and safety cabinets, additional air shall be provided. A filter with 90 percent efficiency shall be installed in the air supply system at its entrance to the media transfer room. Hoods in which highly radioactive materials are processed shall have a face velocity of 150 feet a minute (0.76 meters a second), have a high-efficiency (99.97%) filter, and each hood shall have an independent exhaust system with the fan installed at the discharge point of the system. Hoods used for processing infectious materials shall have a face velocity of 75 feet a minute (0.38 meters a second).
Cooking appliances, other than microwave ovens, shall be provided with exhaust ventilation to the exterior of the building to remove cooking odors, heat, and moisture.
Each vehicle parking garage shall 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. A sign shall be posted at the front of each parking space advising the driver to shut off the engine.
Crawl spaces shall be provided with mechanical ventilation at least one half air changes each day or be provided with open perimeter venting as required by the International Building Code.
S.D. Admin. R. 44:76:11:19
General Authority: SDCL 34-12-13(1), (3), and (4).
Law Implemented: SDCL 34-12-13(1), (3), and (4).
International Building Code, 2012 edition. Copies may be obtained from International Conference of Building Officials, 5360 South Workman Mill Road, Whittier, California 90601-2298. Phone: (562) 699-0541. Cost: $89.00.