Section SPS 364.0401 - Ventilation(1) VENTILATION REQUIRED. (a) These are department rules in addition to the requirements in IMC section 401.2:1. Natural ventilation shall be in accordance with s. SPS 364.0402.2. Mechanical ventilation shall be in accordance with IMC section 403 and as modified in ss. SPS 364.0403(1) to (6).3. Chemical or septic toilets and composting privies are prohibited in spaces under negative pressure. Toilet rooms with chemical or septic toilets shall be provided with natural ventilation via a window, louver or skylight with at least 2 square feet of area openable directly to the outside per septic vault or per chemical toilet. The opening shall be provided with a screen to limit the passage of insects and vermin.(b) These are department exceptions to the requirements of IMC section 401.2: 1. Outdoor air ventilation by natural or mechanical means shall be permitted to be omitted in large volume spaces containing 5,000 or more cubic feet per occupant.2. A toilet room that has only one water closet or urinal and no bathtub or shower may be provided with either natural ventilation via a window or louvered opening with at least 2 square feet of area openable directly to the outside or mechanical exhaust ventilation as specified in Table 364.0403.3. A janitor closet that has only one service sink may be provided with either natural ventilation via a window or louvered opening with at least 2 square feet of area openable directly to the outside or mechanical exhaust ventilation as specified in Table 364.0403.(2) WHEN REQUIRED. Substitute the following wording for the requirements of IMC section 401.3: (a) Except as provided in par. (b), ventilation shall be provided during the periods that the room or space is occupied.(b) Mechanical exhaust ventilation shall be provided for natatoriums even when the space or building is not occupied.(c) In addition to the criteria under s. 101.025(1), Stats., the area that may be occupied by motorized vehicles shall be considered when establishing minimum quantities of outside air that must be supplied.(4) INTAKE OPENINGS. (a) Substitute the following wording for the requirements in IMC introductory section 401.4: Air intake openings for both mechanical and gravity ventilation systems shall comply with all of the following:(b) Substitute the following wording for the requirements in IMC section 401.4 item 2: Intake openings shall be located not less than 10 feet horizontally from any hazardous or noxious contaminant source except as specified in IMC section 401.4, item 3 and section 501.3.1.(c) This is a department rule in addition to the requirements in IMC section 401.4: The lowest side of outside air intake required openings shall be located at least 12 inches vertically from the adjoining grade level, above adjoining roof surfaces, or above the bottom of an areaway.(d) These are department exceptions in addition to the requirements in IMC section 401.4 and par. (c): 1. The setback distances as specified in IMC section 401.4 and par. (c) shall not apply to the combustion air intake of a direct vent appliance.2. Where it can be demonstrated that an engineered system design will prevent the maximum concentration of contaminants brought in through the outside air intake from exceeding the maximum contaminant concentration obtainable by providing the separation distances in accordance with IMC section 401.4 and par. (c), the outdoor air intakes may be located in accordance with such engineered system design.(e) Substitute the following wording for the wording in IMC section 401.4, item 1: Intake openings shall be located a minimum of 10 feet (3048 mm) from lot lines or buildings on the same lot. Where openings front on a street or public way, the distance shall be measured to the centerline of the street or public way. Note: See ch. SPS 382 for plumbing vent setbacks. That rule requires plumbing vents to be 10 feet from air intakes and 10 feet horizontally from or 2 feet above roof scuttles, doors or openable windows.
Wis. Admin. Code Department of Safety and Professional Services SPS 364.0401
CR 00-179: cr. Register December 2001 No. 552, eff. 7-1-02; CR 01-135: r. and recr. (4) (a) (intro.), cr. (4) (a) 4. and (b) 5., CR 01-139: r. and recr. (4) (a) 3., am. (4) (b) 2. Register June 2002 No. 558, eff. 7-1-02; CR 06-120: r. and recr. (1), (2) and (4) (a), r. (3), (4) (b) 2. to 4., am. (4) (b) (intro.), 1. and (5) (intro.), renum. (4) (b) 5. to be (4) (b) 2. and am., cr. (6) Register February 2008 No. 626, eff. 3-1-08; CR 10-103: r. and recr. (1), renum. (4) (a) and (b) to be (4) (c) and (d) and am., cr. (4) (a) and (b), renum. (5) and (6) to be Comm 64.0501 (3) and (5) Register August 2011 No. 668, eff. 9-1-11 correction in (1) (a) 1., 2., (b) 2., 3. made under s. 13.92(4) (b) 7, Stats., Register December 2011 No. 672.Amended by, CR 16-094: (1) (a) 3. renum. from SPS 364.0407 and am., cr. (2) (c), am. (4) (b), cr. (4) (e) Register April 2018 No. 748, eff. 5/1/2018See NFPA standard 45, Fire Protection for Laboratories Using Chemicals, adopted under s. SPS 362.3500, for chemical fume hood exhaust location. Health care and related facilities may have additional requirements.