Mich. Admin. Code R. 408.30758 - Minimum number of fixtures

Rule 758. Sections 403.1, 403.1.1 and 403.3.1 and Table 403.1 of the code are amended to read as follows:

403.1. Minimum number of fixtures. Plumbing fixtures shall be provided for the type of occupancy and in the minimum number shown in Table 403.1. Types of occupancies not shown in Table 403.1 shall be considered individually by the code official. The number of occupants shall be determined in accordance with the Michigan building code. Occupancy classification shall be determined in accordance with the Michigan building code.

Exceptions:

1. The actual number of occupants determined by a supporting affidavit from the owner or agency.
2. Hand washing sinks in food service establishments shall be provided in accordance with section 6101 of the food law, 2000 PA 92, MCL 289.6101, incorporating by reference the United States Food and Drug Administration (FDA) food code 5-204.11 related to the location and placement of hand washing sinks.
3. Toilet facilities for public swimming pools shall be provided in accordance with R 325.2111 to R 325.2199.
4. Toilet facilities for childcare center, day care center, and nursery school facilities shall be provided in accordance with R 400.8101 to R 400.8840.
5. Toilet facilities for children's camps shall be provided in accordance with R 400.11101 to R 400.11413.
403.1.1 Fixture calculations. To determine the occupant load of each sex, the total occupant load shall be divided in half. To determine the required number of fixtures, the fixture ratio or ratios for each fixture type shall be applied to the occupant load of each sex in accordance with table 403.1. Fractional numbers resulting from applying the fixture ratios of table 403.1 shall be rounded up to the next whole number. For calculations involving multiple occupancies, the fractional numbers for each occupancy shall be summed and rounded up to the next whole number.

Exceptions:

1. The total occupant load shall not be required to be divided in half where approved statistical data indicate a distribution of the sexes of other than 50% of each sex.
2. Where multiple-user facilities are designed to serve all genders, the minimum fixtures count shall be calculated at 100%, based on total occupant load. The minimum number of required plumbing fixtures shall be in accordance with table 403.1. In multiple-user facilities, each fixture type shall be in accordance with ICC A117.1 and each urinal that is provided shall be located in a stall.
3. Distribution of the sexes is not required where single-user water closets and bathing room fixtures are provided in accordance with section 403.1.2.
403.3.1. Access. The route to the public toilet facilities required by section 403.3 shall not pass through kitchens, storage rooms, or closets. Access to the required facilities shall be from within the building. All routes shall comply with the accessibility requirements of the Michigan building code. The public shall have access to the required toilet facilities at all times that the building is occupied.

TABLE 403.1

MINIMUM NUMBER OF REQUIRED PLUMBING FIXTURESa

(See Sections 403.1.1 and 403.2)

NO.

CLASSIFICATION

OCCUPANCY

DESCRIPTION

WATER CLOSETS (URINALS SEE SECTION 419.2)

LAVATORIES

BATHTUBS/ SHOWERS

DRINKING FOUNTAIN e,f (SEE SECTION 410.1)

OTHER

MALE

FEMALE

MALE

FEMALE

1

Assembly

A-1d

Theaters and other buildings for the performing arts and motion pictures

1 per 125

1 per 65

1 per 200

1 per 500

1 service sink

A-2d

Nightclubs, bars, taverns, dance halls, and buildings for similar purposes

1 per 40

1 per 40

1 per 75

1 per 500

1 service sink

Restaurants, banquet halls and food courts

1 per 75

1 per 75

1 per 200

1 per 500

1 service sink

Casino gaming areas

1 per 100 for the first 400 and 1 per 250 for the remainder exceeding 400

1 per 50 for the first 400 and 1 per 150 for the remainder exceeding 400

1 per 250 for the first 750 and 1 per 500 for the remainder exceeding 750

_____

1 per 1,000

1 service sink

A-3d

Auditoriums without permanent seating, art galleries, exhibition halls, museums, lecture halls, libraries, arcades, and gymnasiums

1 per 125

1 per 65

1 per 200

1 per 500

1 service sink

Passenger terminals and transportation facilities

1 per 500

1 per 500

1 per 750

1 per 1,000

1 service sink

Places of worship and other religious services.

1 per 150

1 per 75

1 per 200

1 per 1,000

1 service sink

A-4

Coliseums, arenas, skating rinks, pools, and tennis courts for indoor sporting events and activities

1 per 75 for the first 1,500 and 1 per 120 for the remainder exceeding 1,500

1 per 40 for the first 1,520 and 1 per 60 for the remainder exceeding 1,520

1 per 200

1 per 150

1 per 1,000

1 service sink

A-5

Stadiums, amusement parks, bleachers, and grandstands for outdoor sporting events and activities

1 per 75 for the first 1,500 and 1 per 120 for the remainder exceeding 1,500

1 per 40 for the first 1,520 and 1 per 120 for the remainder exceeding 1,520

1 per 200

1 per 150

1 per 1,000

1 service sink

2

Business

B

Buildings for the transaction of business, professional services, other services involving merchandise, office buildings, banks, light industrial, and similar uses

1 per 25 for the first 50 and 1 per 50 for the remainder exceeding 50

1 per 40 for the first 80 and 1 per 80 for the remainder exceeding 80

1 per 100

1 service sinke

3

Educational

E

Educational facilities

1 per 50

1 per 50

1 per 100

1 service sink

4

Factory and industrial

F-1 and F-2

Structures in which occupants are engaged in work fabricating, assembling, or processing of products or materials

1 per 100

1 per 100

1 per 400

1 service sink

5

Institutional

I-1

Custodial care facilities

1 per 10

1 per 10

1 per 8

1 per 100

1 service sink

I-2

Medical care recipients in hospitals and nursing homes

1 per room c

1 per room c

1 per 15

1 per 100

1 service sink per floor

Employees in hospitals and nursing homesb

1 per 25

1 per 35

1 per 100

Visitors in hospitals and nursing homes

1 per 75

1 per 100

1 per 500

I-3

Prisonsb

1 per cell

1 per cell

1 per 15

1 per 100

1 service sink

Reformatories, detention centers, and correctional centersb

1 per 15

1 per 15

1 per 15

1 per 100

1 service sink

Employees in reformatories, detention centers and correctional centersb

1 per 25

1 per 35

-

1 per 100

-

I-4

Adult day care and childcare

1 per 15

1 per 15

1

1 per 100

1 service sink

6

Mercantile

M-1

Retail stores, service stations, shops, salesrooms, markets and shopping centers

1 per 500

1 per 750

___

1 per 1,000

1 service sink

R-1

Hotels, motels, and boarding houses (transient)

1 per sleeping unit

1 per sleeping unit

1 per sleeping unit

____

1 service sink

R-2

Dormitories, fraternities, sororities and boarding houses (not transient)

1 per 10

1 per 10

1 per 8

1 per 100

1 service sink

7

Residential

R-2

Apartment house

1 per dwelling unit

1 per dwelling unit

1 per dwelling unit

_____

1 kitchen sink per dwelling unit; 1 automatic clothes washer connection per 20 dwelling units

R-3

Congregate living facilities with 16 or fewer individuals

1 per 10

1 per 10

1 per 8

1 per 100

1 service sink

R-3

1 and 2 family dwelling and lodging houses with five or fewer guestrooms

1 per dwelling unit

1 per dwelling unit

1 per dwelling unit

_____

1 kitchen sink per dwelling unit; 1 automatic clothes washer connection per dwelling unit

R-4

Congregate living facilities with 16 or fewer individuals

1 per 10

1 per 10

1 per 8

1 per 100

1 service sink

8

Storage

S-1

S-2

Structure for the storage of goods, warehouses, storehouses, and freight depots. Low and moderate hazard.

1 per 100

1 per 100

_____

1 per 1,000

1 service sink
a. The fixtures shown are based on 1 fixture being the minimum required for the number of individuals indicated or any fraction of the number of individuals indicated. The number of occupants shall be determined by the International Building Code.
b. Toilet facilities for employees shall be separate from facilities for inmates or care patients.
c. A single-occupant toilet room with 1 water closet and 1 lavatory serving not more than 2 adjacent patient sleeping units shall be allowed provided that each patient sleeping unit has direct access to the toilet room and provision for privacy for the toilet room user is provided.
d. The occupant load for seasonal outdoor seating and entertainment areas shall be included when determining the minimum number of facilities required.
e. For business and mercantile classifications with an occupant load of 15 or fewer, service sinks shall not be required.
f. The required number and type of plumbing fixtures for outdoor public swimming pools shall be in accordance with section 609 of the International Swimming Pool and Spa Code.

Notes

Mich. Admin. Code R. 408.30758
1979 AC; 1985 AACS; 1989 AACS; 1992 AACS; 1998-2000 AACS; 2001 AACS; 2007 AACS; 2010 AACS; 2013 AACS; 2016 AACS; 2023 MR 22, Eff. 3/12/2024

State regulations are updated quarterly; we currently have two versions available. Below is a comparison between our most recent version and the prior quarterly release. More comparison features will be added as we have more versions to compare.

No prior version found.