SPS 364.0401(1)(a)3.
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.
SPS 364.0401(1)(b)
(b) These are department exceptions to the requirements of IMC section 401.2:
SPS 364.0401(1)(b)1.
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.
SPS 364.0401(1)(b)2.
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.
SPS 364.0401(1)(b)3.
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.
SPS 364.0401(2)
(2) When required. Substitute the following wording for the requirements of IMC section 401.3:
SPS 364.0401(2)(a)
(a) Except as provided in
par. (b), ventilation shall be provided during the periods that the room or space is occupied.
SPS 364.0401(2)(b)
(b) Mechanical exhaust ventilation shall be provided for natatoriums even when the space or building is not occupied.
SPS 364.0401(2)(c)
(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.
SPS 364.0401(4)(a)(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:
SPS 364.0401(4)(b)
(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.
SPS 364.0401(4)(c)
(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.
SPS 364.0401(4)(d)
(d) These are department exceptions in addition to the requirements in IMC section 401.4 and
par. (c):
SPS 364.0401(4)(d)1.
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.
SPS 364.0401(4)(d)2.
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.
SPS 364.0401(4)(e)
(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.
SPS 364.0401 Note
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.
SPS 364.0401 Note
Note: See 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.
SPS 364.0401 History
History:
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;
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. 5-1-18. SPS 364.0402
SPS 364.0402 Natural ventilation. This is a department rule in addition to the requirements in IMC section 402: The use of natural ventilation shall be permitted under either of the following:
SPS 364.0402(2)
(2) For any occupancy, provided an engineered design indicates how the ventilation satisfies the needs of the occupancy.
SPS 364.0403(1)(a)(a) Substitute the following wording for the exception in IMC section 403.2: Where it can be demonstrated that an engineered ventilation system design will prevent the maximum concentration of contaminants from exceeding the maximum obtainable by providing the rate of outdoor air ventilation determined in accordance with IMC section 403.3, as modified by
subs. (2) to
(6), the minimum required rate of outdoor air may be reduced in accordance with such engineered system design. A ventilation system complying with IMC section 403.3 without the modifications of
subs. (2) to
(6) is recognized as meeting this exception.
SPS 364.0403(1)(b)
(b) This is a department rule in addition to the requirements in IMC section 403.2: The outdoor air shall be free from contamination of any kind in proportions detrimental to the health and comfort of the general population exposed to it.
SPS 364.0403(2)
(2) Recirculation prohibited. Substitute the following wording for exception 3 in IMC section 403.2.1:
Where mechanical exhaust is governed by Table 364.0403 footnote c., recirculation of air from such spaces is prohibited. All air supplied to such spaces shall be exhausted, including any air in excess of that required by Table 364.0403.
SPS 364.0403(3)
(3) Recirculation of air. This is a department informational note to be used under IMC section 403.2.1:
SPS 364.0403 Note
Note: The following are examples where the department will accept air transferred from: corridor to toilet room; corridor to cloak room or janitor closet; dining room to kitchen; locker room to toilet room; gymnasium to locker room; showroom to garage; and corridor to school vocational shops.
SPS 364.0403(4)
(4) Transfer air. Substitute the following wording for the requirements in IMC section 403.2.2: Except where recirculation from such spaces is prohibited by Table 364.0403, air transferred from occupied spaces is not prohibited from serving as makeup air for required exhaust systems in such spaces as kitchens, baths, toilet rooms, elevators and smoking lounges. The amount of transfer air and exhaust air shall be sufficient to provide the flow rates as specified in
sub. (5). The required outdoor air rates specified in Table 364.0403 shall be introduced directly into such spaces or into the occupied spaces from which air is transferred or a combination of both.
SPS 364.0403(5)
(5) Ventilation rate. Substitute the following wording for the requirements and exception in IMC section 403.3:
SPS 364.0403(5)(a)1.1. Except as provided in
sub. (1) (a) and
s. SPS 364.0300, a mechanical ventilation system shall be designed to have the capacity to supply a minimum outdoor airflow rate of 7.5 cfm per person as determined in accordance with Table 364.0403 based on the occupancy of the space and the occupant load or other parameters stated therein. A mechanical ventilation system shall be designed to have the capacity to exhaust air as specified in Table 364.0403 except as provided in
par. (c).
SPS 364.0403(5)(a)2.a.a. Except as provided in
subd. 2. b. to
d., the occupant load utilized for design of the ventilation system shall not be less than the number determined from the estimated maximum occupant load rate indicated in Table 364.0403.
SPS 364.0403(5)(a)2.b.
b. The estimated maximum occupant load rate may be determined using other means with justification acceptable to the department to show that a different number of occupants is reasonable.
SPS 364.0403(5)(a)2.c.
c. Where there is no value indicated for the net square feet per person in Table 364.0403, the actual number of occupants shall be used to determine the required amount of outside air.
SPS 364.0403(5)(a)2.d.
d. Ventilation rates for occupancies not represented in Table 364.0403 shall be determined by an approved engineering analysis, or by using the most similar occupancy in the table.
SPS 364.0403(5)(b)1.1. Except as provided in
subd. 2., spaces with different ventilation requirements shall be provided with a complete solid separation, or the most stringent ventilation requirement shall apply to all unseparated areas.
SPS 364.0403(5)(b)2.
2. The separation as specified in
subd. 1. is not required where an engineered ventilation design system will prevent the concentration of contaminants from exceeding that obtainable by providing a physical separation.
SPS 364.0403(5)(c)1.1. `Toilet rooms.' 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.
SPS 364.0403(5)(c)2.
2. `Janitor closets.' 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.
SPS 364.0403(5)(c)3.
3. `Locker and shower rooms.' An adjoining locker room, shower room and toilet room shall be exhausted at the rate specified in Table 364.0403 based on the largest amount of exhaust required for any of the three rooms. A negative pressure relationship shall be maintained in the shower and toilet rooms with respect to the locker room.
SPS 364.0403(5)(c)5.
5. `Pool ventilation.' In a natatorium, the volume of supply air and exhaust air may be reduced to a minimum of 1 cfm per square foot of pool surface provided automatic humidity controls perform so as not to create accelerated building material deterioration from moisture condensation.
SPS 364.0403(5)(d)1.1. Substitute the following wording for the requirements in IMC sections 403.1.1.1 through 403.3.1.1.2.3.4: Where multiple spaces having different ventilation rate requirements are served by a common ventilation system, the minimum amount of outdoor airflow supplied by the ventilation system shall equal the total outdoor airflow required for each space if each space is provided with minimum air changes in accordance with this paragraph.
SPS 364.0403(5)(d)2.a.a. Except as provided in
subd. 3., an air change rate of 6 air changes per hour shall be provided in each space.
SPS 364.0403(5)(d)2.b.
b. The air change air rate under this subsection shall be determined upon either the actual height of the space or 10 feet from the floor level of the space which ever is less.
SPS 364.0403(5)(d)2.c.
c. The air movement providing the required minimum air change shall be that amount that is transferred through the air handling equipment where the return air is diluted or replaced with outside air and supplied back to the space.
SPS 364.0403(5)(d)3.
3. Air change rate of less than 6 air changes per hour is permitted where mechanical cooling is provided to maintain an interior design temperature of 75 degrees F or lower. The air change rate may not be less than the alternative minimum air change rate per hour specified in Table 364.0403. Air changes are not required to be provided for spaces required to be mechanically exhausted.
SPS 364.0403(5)(d)4.
4. The air change requirement for 6 air changes per hour may be omitted in any of the following applications:
SPS 364.0403(6)
(6) System operation. Substitute the following wording for the requirements in IMC section 403.3.1.3: The minimum flow rate of outdoor air that the ventilation system must be capable of supplying during its operation may be based on the rate per person indicated in Table 364.0403 and the actual number of occupants present.
NA = not applicable; NR = none required; cfm = cubic feet per minute; TF = toilet fixtures (water closets and urinals); A/C = air conditioning
a. Based upon net floor area.
b. The ventilation rate is based upon cubic feet per minute per square foot of the floor area being ventilated.
c. Mechanical exhaust is required and the recirculation of air from these spaces that would otherwise be allowed by IMC section 403.2.1 is prohibited.
d. Transfer air is permitted in accordance with IMC section 403.2.2.
e. Provide an exhaust rate of not less than 1.5 cfm/sf.
f. The minimum mechanical ventilation rate is 15 cfm/room of outside air.
g. Natural ventilation may be allowed under this section.
h. The classification of a `beauty' salon depends on the types of services provided. Only beauty salons that routinely provide chemical processing of hair to produce texture or color changes.
i. Enclosed parking garages are parking garages that fail to meet the criteria for open garages in IBC section 406.5.2. Ventilation systems in enclosed parking garages shall comply with IMC section 502.13. A mechanical ventilation system may not be required if the room or space meets all of the following:
1. Has a floor area of 850 square feet or less.
2. Used for the storage of 5 or fewer motorized vehicles.
3. Meets the natural ventilation requirements of IMC 402 and
s. SPS 364.0402.
j. Refer to IMC chapter 5 for exhaust requirements based upon the chemicals used.
k. For compressed natural gas IMC 502.16.
l. Mezzanine floor areas that are open to a service and/or repair area may not be included as floor area when determining the minimum exhaust rate from the room or space.
m. For nail salons, the required exhaust shall include ventilation tables or other systems that capture the contaminants and odors. The exhaust system shall be capable of exhausting the greater of 50 cfm per station or 0.6 cfm per square foot of work area. The exhaust inlet shall be located in the work area.
n. The requirements for enclosed parking garages shall apply to all buildings, or rooms, spaces, or parts of buildings, into which motor vehicles are being driven for loading or unloading, or that are stored.
o. Warehouses include indoor drive-through self-service storage facilities in which a customer may temporarily park a motorized vehicle for purposes of loading and unloading materials, provided the motor is not running.
SPS 364.0403 History
History:
CR 00-179: cr.
Register December 2001 No. 552, eff. 7-1-02;
CR 01-135: renum. (3) to be (3) (b), cr. (3) (a), (4) (a) 6. and (5) (d), am. (5) (a), (b) 1. a., (c) 1. and (6) Table;
CR 01-139: renum. (3) to (6) to be (4), (6), (8) and (9), cr. (3), (5) and (7), am. (6) Table, r. and recr. (6)
Register June 2002 No. 558, eff. 7-1-02;
CR 04-016: am. Table 64.0403
Register December 2004 No. 588, eff. 1-1-05;
CR 06-120: r. (1), (4) (a), (6) (a) 3., 6. and (d), am. (2) (a) and (3), renum. (4) (b) to be (4), r. and recr. (6) (intro.), (a) 1., (8) and Table 64.0403
Register February 2008 No. 626, eff. 3-1-08;
CR 10-103: r. (6) (c) 4., (9), r. and recr. Table 64.0403, renum. (2) to (7), (8) to (1) to (6), (5) (d) and am.
Register August 2011 No. 668, eff. 9-1-11; correction in (2), (4), (5) (a) 1., 2. a., c., d., (c) 1., 2., 3., (d) 2. d., (6), Table 346.0403 made under s.
13.92 (4) (b) 7., Stats.,
Register December 2011 No. 672;
CR 16-094: am. (5) (d) 1., renum. (5) (d) 2. d. to (d) 3. and am., cr. (5) (d) 4., am. (6), cr. (7), am. Table 364.0403 Register April 2018 No. 748, eff. 5-1-18; correction in (4), (5) (d) 2. a. made under s. 13.92 (4) (b) 7., Stats., Register April 2018 No. 748. SPS 364.0404
SPS 364.0404 Enclosed parking garages. Substitute the following wording for the requirements in IMC sections 404.1 and 404.2:
SPS 364.0404(1)
(1) Mechanical ventilation systems for enclosed parking garages shall be permitted to operate intermittently by one of the following methods:
SPS 364.0404(1)(a)
(a) The system shall be arranged to operate continuously at a minimum exhaust rate of 0.05 cfm/sf. Subsequently, the system shall operate at a minimum of 0.75 cfm/sf automatically upon detection of vehicle operation, the presence of occupants, or by a combination of occupancy sensors and carbon monoxide and nitrogen dioxide sensors as appropriate for the room or space. The system shall also be designed so to address the requirements listed in
s. SPS 364.0404 (2) and
(3).
