South Dakota Administrative Rules
Title 44 - Department of Health
Article 44:75 - Hospital, specialized Hospital critical access Hospital, and rural emergency Hospital facilities
Chapter 44:75:13 - Construction Standards
Section 44:75:13:23 - Ventilating systems

(1) Operating rooms sixty-eight to seventy-three degrees Fahrenheit or twenty to 22.8 degrees centigrade, three outdoor, twenty total, and twenty to sixty percent humidity;

(2) Delivery rooms sixty-eight to seventy-three degrees Fahrenheit or twenty to 22.8 degrees centigrade, three outdoor, fifteen total, and twenty to sixty percent humidity;

(3) Recovery rooms - at least seventy degrees Fahrenheit or 21.1 degrees centigrade, two outdoor, six total, and twenty to sixty percent humidity;

(4) Nursery rooms - at least seventy-five degrees Fahrenheit or 23.9 degrees centigrade, two outdoor, six total, and twenty to sixty percent humidity; and

(5) Intensive care rooms seventy to seventy-five degrees Fahrenheit or 21.1 to 23.9 degrees centigrade, two outdoor, six total, and twenty to sixty percent humidity.

For all other occupied areas, the facility shall be able to maintain a minimum temperature of seventy-five degrees Fahrenheit or 23.9 degrees centigrade and at least fifteen percent humidity at winter design conditions with a minimum of at least two total air changes an hour. 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 twenty-five feet or 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 or 1.83 meters above the ground level or, if installed through the roof, three feet or 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 three inches or 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 ninety 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 one hundred fifty feet per minute or 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 seventy-five feet a minute or 0.38 meters a second.

Cooking appliances, other than microwave ovens, must be provided with exhaust ventilation to the exterior of the building to remove cooking odors, heat, and moisture.

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 one thousand square feet. A sign shall be posted at the front of each parking space advising the driver to shut off the engine.

Crawl spaces must 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, 2012 edition, §1203.