DEPARTMENT OF LICENSING AND REGULATORY AFFAIRS

DIRECTOR’S OFFICE

CONSTRUCTION CODE

Filed with the secretary of state on November 13, 2023

These rules become effective 120 days after filing with the secretary of state.

(By authority conferred on the director of the department of licensing and regulatory

affairs by section 4 of the Stille-DeRossett-Hale single state construction code act, 1972

PA 230, MCL 125.1504, and Executive Reorganization Order Nos. 2003-1, 2008-4, and

2011-4, MCL 445.2011, 445.2025, and 445.2030)

R 408.30701, R 408.30711, R 408.30716, R 408.30727, R 408.30729, R 408.30755, R

408.30758, and R 408.30762 of the Michigan Administrative Code are amended, R

408.30725d, R 408.30725e, R 408.30725f, R 408.30725g, R 408.30725h, R 408.30726a,

R 408.30727a, R 408.30727b, R 408.30727c, R 408.30729a, R 408.30729b, R

408.30732, R 408.30736, R 408.30753b, R 408.30755a, R 408.30758a, and R

408.30758b are added, as follows:

PART 7. PLUMBING CODE

AMENDMENTS AND ADDITIONS TO BASIC PLUMBING CODE

R 408.30701 Applicable code.

Rule 701. Rules governing the installation, replacement, alteration, relocation, and use

of plumbing systems or plumbing materials are those contained in the international

plumbing code, 2021 second printing edition, including appendices B, C, D, and E,

except for sections 103.1, 103.2, 103.3, 104.2, 104.5 to 104.7, 104.8, 104.8.1,

106.3,106.3.1, 106.3.2, 106.5.5,108.2.5, 108.2.5.1, 108.2.5.2, 109.2 to 109.5, 113.1 to

113.4,114.1 to 114.4, 115.3, 404.2, 404.3, 602.3 to 602.3.5.1, 608.18 to 608.18.8,

712.3.3.1, 712.3.3.2, 715.1 to 715.4, 802.4.3.1, 1106.3, 1106.6, 1301 to 1304.4.2, 1401 to

1403.2.1 and tables 608.18.1, 1106.3, and 1106.6. With the exceptions noted, the code is

adopted in these rules by reference. All references to the International Building Code,

International Residential Code, International Energy Conservation Code, National

Electrical Code, International Mechanical Code, and International Plumbing Code mean

the Michigan Building Code, Michigan Residential Code, Michigan Energy Code,

Michigan Electrical Code, Michigan Mechanical Code, and Michigan Plumbing Code,

respectively. The code is available for inspection, and purchase at the Lansing office of

the Michigan Department of Licensing and Regulatory Affairs, Bureau of Construction

Codes, 611 West Ottawa Street, First Floor Ottawa Building, Lansing, Michigan 48933.

The code may be purchased from the International Code Council, through the bureau’s

October 9, 2023

2

website at www.michigan.gov/bcc , at a cost as of the time of adoption of these rules of

$87.50 for each code book.

AMENDMENTS AND ADDITIONS TO BASIC PLUMBING CODE

R 408.30711 Title and scope.

Rule 711. Sections 101.1, 101.2, and 101.3 of the code are amended to read as follows:

101.1. Title. This part shall be known as the Michigan plumbing code and is to be

referred to as “the plumbing code” or “the code.” This part shall control all matters

concerning the installation, replacement, alteration, relocation, and use of plumbing

systems or plumbing materials as defined in this code and shall apply to existing or

proposed buildings and structures in this state.

101.2. Scope. The design and installation of plumbing systems, including sanitary and

storm drainage, sanitary facilities, medical gas systems, water supplies, water service, and

storm water and sewage disposal in and exiting buildings, shall comply with the

requirements of the code. The design and installation of gas piping, chilled water piping

in connection with refrigeration process and comfort cooling, and hot water piping in

connection with building heating systems shall conform to the Michigan mechanical

code. The design and installation of all fire sprinkler systems and standpipe systems shall

conform to the Michigan building code. Water and drainage connections to such

installations shall be made in accordance with the requirements of the code.

Exception: Detached 1-and 2-family dwellings and multiple single-family dwellings,

such as townhouses, not more than 3 stories high with separate means of egress and their

accessory structures shall comply with the Michigan residential code.

101.3. Intent. The purpose of this code and the Stille-DeRossett-Hale single state

construction code act, 1972 PA 230, MCL 125.1501 to 125.1531 is to establish minimum

standards to provide a reasonable level of safety, health, property protection, and public

welfare by regulating and controlling the design, construction, installation, quality of

materials, location, and operation and maintenance or use of plumbing equipment and

systems. The Stille-DeRossett-Hale single state construction code act, 1972 PA 230,

MCL 125.1501 to 125.1531, takes precedence over all provisions of this code.

R 408.30716 Fees.

Rule 716. Section 109.1 of the code is amended to read as follows:

109.1. Fees. The fees prescribed by the act shall be paid to the enforcing agency of the

jurisdiction before a permit to begin work for new construction, alteration, removal,

demolition, or other building operation may be issued. In addition, an amendment to a

permit necessitating an additional fee shall not be approved until the additional fee is

paid. The authority having jurisdiction may withhold issuance of any newly requested

permits to an individual who has outstanding permit fees owed to that authority having

jurisdiction.

R 408.30725d Type of fixtures.

Rule 725d. Section 915.1 is added to the code to read as follows:

3

915.1. Type of fixtures. A combination waste and vent system shall not serve fixtures

other than floor drains, sinks, lavatories and drinking fountains. Combination waste and

vent systems shall not receive the discharge from a food waste disposer or clinical sink.

R 408.30725e Fixture traps.

Rule 725e. Section 1002.1 is added to the code to read as follows:

1002.1. Fixtures traps. Each plumbing fixture shall be separately trapped by a liquid-

seal trap, except as otherwise allowed by this code. The vertical distance from the fixture

outlet to the trap weir shall not exceed 24 inches, 609.6 mm, and the horizontal distance

shall not exceed 30 inches, 762 mm, measured from the centerline of the fixture outlet to

the centerline of the inlet of the trap. The height of a clothes washer standpipe above a

trap shall conform to section 802.4.3. A fixture shall not be double trapped.

Exceptions:

1. This section shall not apply to fixtures with integral traps.

2. A combination plumbing fixture is allowed to be installed on 1 trap, provided that 1

compartment is not more than 6 inches, 152 mm, deeper than the other compartment and

the waste outlets are not more than 30 inches, 762 mm, apart.

3. A grease interceptor intended to serve as a fixture trap in accordance with the

manufacturer's installation instructions shall be allowed to serve as the trap for a single

fixture or a combination sink of not more than 3 compartments where the vertical

distance from the fixture outlet to the inlet of the interceptor does not exceed 30 inches,

762 mm, and the developed length of the waste pipe from the most upstream fixture

outlet to the inlet of the interceptor does not exceed 60 inches, 1524 mm.

4. Floor drains in multilevel parking structures that discharge to a building storm sewer

shall not be required to be individually trapped. Where floor drains in multilevel parking

structures are required to discharge to a combined building sewer system, the floor drains

shall not be required to be individually trapped provided that they are connected to a

main trap in accordance with section 1103.1.

R 408.30725f Inspection and testing of backflow prevention assemblies.

Rule 725f. Section 312.10 is added to the code to read as follows:

312.10. Inspection and testing of backflow prevention assemblies. Inspection and

testing shall comply with section 312.10.1 and 312.10.2

R 408.30725g Inspections.

Rule 725g. Section 312.10.1 is added to the code to read as follows:

312.10.1. Inspections. Inspections shall be made of all backflow prevention assemblies

and air gaps after installation or relocation to determine whether the assemblies are

operable and air gaps exist.

R 408.30725h Testing.

Rule 725h. Section 312.10.2 is added to the code to read as follows:

312.10.2. Testing. Reduced pressure principle, double check, pressure vacuum breaker,

reduced pressure detector fire protection, double check detector fire protection, and spill-

resistant vacuum breaker backflow preventer assemblies and hose connection backflow

preventers shall be tested at the time of installation, immediately after repairs or at the

4

time of relocation. Test gauges shall comply with ASSE 1064. The testing procedure

shall be performed in accordance with 1 of the following standards:

(a) ASSE 5013.

(b) ASSE 5015.

(c) ASSE 5020.

(d) ASSE 5047.

(e) ASSE 5048.

(f) ASSE 5052.

(g) ASSE 5056.

(h) CSA B64.10.

(i) CSA B64.10.1.

R 408.30726a Pipe fittings.

Rule 726a. Section 702.4 is added to the code to read as follows:

Table 702.4

PIPE FITTINGS

MATERIAL

STANDARD

Acrylonitrile butadiene styrene (ABS)

plastic pipe in IPS diameters

Acrylonitrile butadiene styrene (ABS)

plastic pipe in sewer and drain diameters

Cast iron

ASME A112.4.4; ASTM D2661; ASTM

F628; CSA B181.1

ASTM D2751

ASME B16.4; ASME B16.12; ASTM

A74; ASTM A888; CISPI 301

ASME B16.15; ASME B16.18; ASME

B16.22; ASME B16.23; ASME B16.26;

ASME B16.29

Copper or Copper alloy

Galvanized steel pipe

Glass

ASTM A53

ASTM C1053

Gray iron and ductile iron

Polyethylene

AWWA C110/A21.10

ASTM D2683

Polyolefin

Polyvinyl chloride (PVC) plastic in IPS

diameters

ASTM F1412; CSA B181.3

ASME A112.4.4; ASTM D2665; ASTM

F1866

Polyvinyl chloride (PVC) plastic pipe in

sewer and drain diameters

Polyvinyl chloride (PVC) plastic pipe

with a 3.25-inch O.D.

Polyvinylidene fluoride (PVDF) plastic

pipe

ASTM D3034

ASTM D2949

ASTM F1673; CSA B181.3

Stainless steel drainage system, Types 304 ASME A112.3.1

and 316L

Steel

ASME B16.9; ASME B16.11; ASME

B16.28

5

Vitrified clay

ASTM C700

R 408.30727 Water distribution pipe.

Rule 727. Table 605.4 of the code is amended to read as follows:

Table 605.4

WATER DISTRIBUTION PIPE

MATERIAL

STANDARD

Chlorinated polyvinyl chloride (CPVC)

plastic pipe and tubing

Chlorinated polyvinyl

ASTM D2846; ASTM F441; ASTM

F442; CSA B137.6

ASTM F2855

chloride/aluminum/chlorinated polyvinyl

chloride (CPVC/AL/CPVC)

Copper or copper-alloy pipe

Copper or copper-alloy tubing (Type K,

WK, L, WL, M or WM)

ASTM B42; ASTMB302; ASTM B43

ASTM B75; ASTM B88; ASTM B251;

ASTM B447

Cross-linked polyethylene (PEX) plastic

tubing

ASTM F876; CSA B137.5

Cross-linked polyethylene/aluminum/cross- ASTM F1281; ASTM F2262; CSA

linked polyethylene (PEX-AL-PEX) pipe B137.10

Cross-linked polyethylene/aluminum/high- ASTM F1986

density polyethylene (PEX-AL-HDPE)

Ductile iron pipe

AWWA C151/A21.51; AWWA

C115/A21.15

ASTM A53

Galvanized steel pipe

Polyethylene/aluminum/polyethylene (PE-

AL-PE) composite pipe

ASTM F1282

Polyethylene of raised temperature (PE-RT) ASTM F2769; CSA B137.18

plastic tubing

Polypropylene (PP) plastic pipe or tubing

Stainless steel pipe (Type 304/304L)

Stainless steel pipe (Type 316/316L)

ASTM F2389; CSA B137.11

ASTM A312; ASTM A778

ASTEM A312; ASTEM A778

(REFERENCE R 408.30732, SECTION 605.2.1)

R 408.30727a Location of full-open valve.

Rule 727a. Section 606.1 is added to the code to read as follows:

606.1. Location of full-open valve. Full-open valves shall be installed in the following

locations:

1. On the building water service pipe from the public water supply near the curb.

2. On the water distribution supply pipe at the entrance into the structure.

2.1. In multiple tenant buildings, where a common water supply piping system is

installed to supply spaces other than 1 and 2 family dwellings, a main shutoff valve shall

be provided for each tenant or space.

3. On the discharge side of every water meter.

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4. On the base of every water riser pipe in occupancies other than multiple-family

residential occupancies that are 2 stories or less in height and in 1 and 2 family residential

occupancies.

5. On the top of every water down-feed pipe in occupancies other than 1 and 2 family

residential occupancies.

6. On the entrance to every water supply pipe to a dwelling unit, except where

supplying a single fixture equipped with individual stops.

7. On the water supply pipe to a gravity or pressurized water tank.

8. On the water supply pipe to every water heater.

R 408.30727b Labeling of water distribution pipes in bundles.

Rule 727b. Section 606.7 is added to the code to read as follows:

606.7. Labeling of water distribution pipes in bundles. Where water distribution piping

is bundled at installation, each pipe in the bundle shall be identified using stenciling,

commercially available pipe labels, or approved color-coded piping materials. The

identification shall indicate the pipe contents and the direction of flow in the pipe. The

interval of the identification markings on the pipe shall not exceed 25 feet, 7620mm.

There shall be at least 1 identification label on each pipe in each room, space, or story.

R 408.30727c Tempered water temperature control.

Rule 727c. Section 607.1.2 is added to the code to read as follows:

607.1.2. Tempered water temperature control. Tempered water shall be controlled by 1

of the following:

1. A limiting device conforming to ASSE 1070/ASME A112.1070/CSA B125.70 and

set to not greater than 110 degrees Fahrenheit or 43 degrees Celsius.

2. A thermostatic mixing valve conforming to ASSE 1017.

3. A water heater conforming to ASSE 1082.

4. A water heater conforming to ASSE 1084.

5. Emergency eye wash tepid water limits shall not be less than 60 degrees Fahrenheit

or 15.6 degrees Celsius and not greater than 100 degrees Fahrenheit or 37.8 degrees

Celsius and conform to ASSE 1071.

R 408.30729 Water service pipe.

Rule 729. Table 605.3 and section 609.3 of the code are amended to read as follows:

Table 605.3

WATER SERVICE PIPE

MATERIAL

STANDARD

Acrylonitrile butadiene styrene (ABS)

plastic pipe

ASTM D1527; ASTM D2282

Chlorinated polyvinyl chloride (CPVC)

plastic pipe

ASTM D2846; ASTM F441; ASTM

F442; CSA B137.6

Chlorinated polyvinyl

ASTM F2855

chloride/aluminum/chlorinated polyvinyl

chloride (CPVC/AL/CPVC)

Copper or copper-alloy pipe

ASTM B42; ASTM B302

7

Copper or copper-alloy tubing (Type K,

WK, L, WL, M or WM)

ASTM B75; ASTM B88; ASTM B251;

ASTM B447

Cross-linked polyethylene (PEX) plastic

pipe and tubing

ASTM F876; AWWA C904; CSA

B137.5

Cross-linked polyethylene/aluminum/cross- ASTM F1281; ASTM F2262; B137.10

linked polyethylene (PEX-AS-PEX) pipe

Cross-linked polyethylene/aluminum/high- ASTM F1986

density polyethylene (PEX-AL-HDPE)

Ductile iron water pipe

AWWA C151/A21.51; AWWA

C115/A21.15

Galvanized steel pipe

ASTM A53

Polyethylene (PE) plastic pipe

ASTM D2239; ASTM D3035; AWWA

C901; CSA B137.11

Polyethylene (PE) plastic tubing

ASTM D2737; AWWA C901; CSA

B137.1

Polyethylene/aluminum/polyethylene (PE-

AL-PE) pipe

ASTM F1282; CSA B 137.9

Polyethylene of raised temperature (PE-RT) ASTM F2769; CSA B137.18

plastic tubing

Polypropylene (PP) plastic pipe or tubing

Polyvinyl chloride (PVC) plastic pipe

ASTM F2389; CSA B137.11

ASTM D1785; ASTM D2241; ASTM

D2672; CSA B137.3

Stainless steel pipe (Type 304/304L)

Stainless steel pipe (Type 316/316L)

Chlorinated polyvinyl chloride (CPVC)

plastic pipe and tubing

ASTM A312; ASTM A778

ASTM D2846; ASTM F441; ASTM

F442; CSA B137.6

Chlorinated polyvinyl

ASTM F2855

chloride/aluminum/chlorinated polyvinyl

chloride (CPVC/AL/CPVC)

Copper or copper-alloy pipe

Copper or copper-alloy tubing (Type K,

WK, L, WL, M or WM)

ASTM B-42; ASTM B302; ASTM B43

ASTM B75; ASTM B88; ASTM B251;

ASTM B447

Cross-linked polyethylene (PEX) plastic

tubing

ASTM F876; CSA B137.5

Cross-linked polyethylene/aluminum/cross- ASTM F1281; ASTM F2262; CSA

linked polyethylene (PEX-AL-PEX) pipe B137.10

Cross-linked polyethylene/aluminum/high- ASTM F1986

density polyethylene (PEX-AL-HDPE)

Ductile iron pipe

AWWA C151/A21.51; AWWA

C115/A21.15

ASTM F1282

Polyethylene/aluminum/polyethylene (PE-

AL-PE) composite pipe

Polyethylene of raised temperature (PE-RT) ASTM F2769; CSA B137.158

plastic tubing

Polypropylene (PP) plastic pipe or tubing

ASTM F2389; CSA B137.11

8

Stainless steel pipe (Type 304/304L)

Stainless steel pipe (Type 316/316L)

ASTM A312; ASTM A778

(REFERENCE R 408.30732, SECTION 605.2.1)

609.3 Hot water. Hot water shall be provided to supply all of the hospital fixtures,

kitchen, and laundry requirements. Special fixtures and equipment shall have hot water

supplied at a temperature specified by the manufacturer. The hot water system shall be

installed in accordance with section 607.

R 408.30729a. Pipe fitting.

Rule 729a. Table 605.5 is added to the code to read as follows:

Table 605.5

PIPE FITTINGS

MATERIAL

Acrylonitrile butadiene styrene (ABS)

STANDARD

ASTM D2468

plastic

Cast iron

ASME B16.4

Chlorinated polyvinyl chloride (CPVC)

Plastic

ASSE 1061; ASTM D2846; ASTM

F437; ASTM F438; ASTM F439; CSA

B137.6

Copper or copper alloy

ASME B16.15; ASME B16.18; ASME

B16.22; ASME B16.26; ASME B16.51;

ASSE 1061; ASTM F1476; ASTM

F1548; ASTM F3226

Cross-linked polyethylene/aluminum/high- ASTM F1986

density polyethylene (PEX-AL-HDPE)

Fittings for cross-linked polyethylene (PEX) ASSE 1061; ASTM F877; ASTM

plastic tubing

F1807; ASTM F 1960; ASTM F2080;

ASTM F2098, ASTM F2159; ASTM

2434; ASTM F2735; CSA B137.5

ASSE 1061; ASTM D3261; ASTM

F1807; ASTM 2098; ASTM F2159;

ASTM 2735; ASTM F2769; CSA

B137.18

Fittings for polyethylene of raised

temperature (PE-RT) plastic tubing

Galvanized steel pipe

ASTM A53

Gray iron and ductile iron

ASTM F1476; ASTM F1548; AWWA

C110/A21.10; AWWA C153/A21.53

ASTM F1281; ASTM F1282; ASTM

F1974; CSA B137.9; CSA B137.10

Insert fittings for

polyethylene/aluminum/polyethylene (PE-

AL-PE) and cross-linked

polyethylene/aluminum/cross-linked

polyethylene (PEX-AL-PEX)

Malleable iron

ASME B16.3

9

Metal (brass) insert fittings for

polyethylene/aluminum/polyethylene (PE-

AL-PE) and cross-linked

ASTM F1974

polyethylene/aluminum/cross-linked

polyethylene (PEX-AL-PEX)

Polyethylene (PE) plastic pipe

ASTM D2609; ASTM D2683; ASTM

D3261; ASTM F1055; CSA B137.1

Polypropylene (PP) plastic pipe or tubing

Polyvinyl chloride (PVC) plastic

Stainless steel (Type 304/304L)

Stainless steel (Type 316/316L)

Steel

ASTM F2389; CSA B137.11

ASTM D2464; ASTM D2466; ASTM

D2467; CSA B137.2; CSA B137.3

ASTM A312; ASTM A778; ASTM

F1476; ASTM F1548; ASTM F3226

ASTM A312; ASTM A778; ASTM

F1476; ASTM F1548; ASTM F3226

ASME B16.9, ASME B16.11; ASME

B16.28; ASTM F1476; ASTM F1548

(REFERENCE R 408.30732, SECTION 605.2.1)

R 408.30729b Manufactured pipe nipples.

Rule 729b. Table 605.8 is added to the code to read as follows:

Table 605.8

MANUFACTURED PIPE NIPPLES

MATERIAL

Copper, copper alloy, and chromium-

STANDARD

ASTM B687

plated

Galvanized steel pipe

Steel

ASTM A53

ASTM A773

(REFERENCE R 408.30732, SECTION 605.2.1)

R 408.30732 Lead content of drinking water pipe and fittings.

Rule 732. Section 605.2.1 is added to the code to read as follows:

605.2.1. Lead content of drinking water pipe and fittings.

Pipe, pipe fittings, joints, valves, faucets, and fixture fittings utilized to supply water for

drinking or cooking purposes shall comply with NSF 372 and shall have a weighted

average lead content of 0.25% or less.

R 408.30736 Water supply.

Rule 736. Section 411.3 is added to the code to read as follows:

411.3. Water supply. Where hot and cold water is supplied to an emergency shower or

eyewash station, the temperature of the water supply shall only be controlled by a

temperature-actuated mixing value complying with ASSE 1071. Where water is supplied

10

directly to an emergency shower or eyewash station from a water heater, the water heater

shall comply with ASSE 1085, section 607.1.2.

R 408.30753b Roof extension unprotected.

Rule 753b. Section 903.1.1 is added to the code to read as follows:

903.1.1. Roof extension unprotected. Open vent pipes that extend through a roof shall

be terminated not less than 12 inches, 304.8 mm, above the roof.

R 408.30755 Storm drainage.

Rule 755. Table 1102.4 of the code is amended to read as follows:

TABLE 1102.4

BUILDING STORM SEWER PIPE

MATERIAL

STANDARD

Acrylonitrile butadiene styrene (ABS) ASTM D2661; ASTM F628; ASTM

plastic pipe in IPS diameters, including F1488; CSA B181.1; CSA B182.1

Schedule 40, DR 22 (PS 200) and DR 24

(PS 140); with a solid, cellular core or

composite wall.

Cast-iron pipe

Concrete pipe

ASTM A74; ASTM A888; CISPI 301

ASTM C14; ASTM C76; CSA A257.1M;

CSA A257.2M

Copper or copper-alloy tubing (Type K, L, ASTM B75; ASTM B88; ASTM B251;

M or DWV)

ASTM B306

Polyethylene (PE) plastic pipe

ASTM F667; ASTM F2306/F2306; ASTM

F2648/F2648M

Polypropylene (PP) plastic pipe

ASTM F2736; ASTM F2764; CSA

B182.13

Polyvinyl chloride (PVC) plastic pipe

(Type DWV, SDR26, SDR35, SDR41,

PS50 or PS100) in IPS diameters,

including Schedule 40, DR 22 (PS 200)

and DR 24 (PS 140); with a solid, cellular

core or composite wall

ASTM D2665; ASTM D3034; ASTM

F891; ASTM F1488; CSA B181.2; CSA

B182.2; CSA B182.4

Vitrified clay pipe

ASTM C4; ASTM C700

Stainless steel drainage systems, Type ASME A112.3.1

316L

R 408.30755a Rainfall rate conversion method.

Rule 755a. Section 1106.2.1 is added to the code to read as follows:

1106.2.1. Rainfall rate conversion method. The rainfall rate falling on a roof surface

shall be converted to a gallon per minute (L/m) flow rate in accordance with equation 11-

1.

11

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.

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TABLE 403.1

MINIMUM NUMBER OF REQUIRED PLUMBING FIXTURES^a

(See Sections 403.1.1 and 403.2)

WATER CLOSETS

DRINKING

FOUNTAIN

(URINALS SEE

SECTION 419.2)

LAVATORIES

^e,f(SEE

BATHTUBS/ SECTION

NO. CLASSIFICATION OCCUPANCY DESCRIPTION MALE

FEMALE MALE FEMALE

OTHER

SHOWERS

410.1)

1

Theaters and

other buildings

for the

performing arts

and motion

pictures

1 service

sink

A-1^d

1 per 125

1 per 40

1 per 65

1 per 40

1 per 200

1 per 500

Nightclubs,

bars, taverns,

dance halls, and

buildings for

similar

1 service

sink

1 per 75

1 per 500

purposes

Restaurants,

banquet halls

and food courts

Assembly

1 per 75

1 per 50

1 per 200

1 service

sink

A-2^d

1 per 100

for the first for the first

400 and 1 400 and 1

per 250 for per 150 for

1 per 250 for the

first 750 and 1 per

500 for the

remainder

exceeding 750

_____

1 per 1,000

1 per 500

the

remainder remainder

Casino gaming exceeding exceeding

the

1 service

sink

areas

Auditoriums

without

400

1 service

sink

A-3^d

1 per 125

1 per 65

1 per 200

13

permanent

seating, art

galleries,

exhibition halls,

museums,

lecture halls,

libraries,

arcades, and

gymnasiums

Passenger

terminals and

transportation

facilities

1 service

sink

1 per 500

1 per 750

1 per 200

1 per 1,000

Places of

worship and

other religious

services.

1 service

sink

1 per 150

1 per 75

1 per 40

Coliseums,

arenas, skating for the first for the first

rinks, pools,

and tennis

courts for

indoor sporting remainder remainder

events and

activities

Stadiums,

amusement

parks,

1,500 and 1,520 and

1 per 120

for the

1 per 60

for the

1 per

200

1 service

sink

A-4

A-5

1 per 150

1 per 1,000

exceeding exceeding

1,500

1,520

1 per 75

1 per 40

for the first for the first

1,500 and 1,520 and

bleachers, and

1 per 120

for the

1 per

200

1 service

sink

1 per 150

1 per 1,000

grandstands for for the

outdoor

sporting events exceeding exceeding

and activities 1,500 1,520

remainder remainder

14

Buildings for

the transaction

of business,

professional

services, other

services

involving

merchandise,

office

1 per 40 for the

first 80 and 1 per

80 for the

1 per 25 for the first 50

and 1 per 50 for the

1 service

sink^e

2

Business

B

1 per 100

remainder exceeding 50 remainder

exceeding 80

buildings,

banks, light

industrial, and

similar uses

Educational

facilities

Structures in

which

occupants are

engaged in

work

fabricating,

assembling, or

processing of

products or

materials

1 service

sink

3

4

5

Educational

E

1 per 50

1 per 100

1 per 10

1 per 50

1 per 100

1 per 10

1 per 100

1 per 400

1 per 100

Factory and

industrial

1 service

sink

F-1 and F-2

Custodial care

facilities

1 service

sink

Institutional

I-1

1 per 8

15

Medical care

recipients in

hospitals and

nursing homes

Employees in

hospitals and

nursing homes^b

Visitors in

1 service

sink per

floor

1 per room c

1 per 35

1 per 15

1 per 100

I-2

1 per 25

hospitals and

nursing homes

1 per 75

1 per 100

1 per cell

1 per 500

1 per 100

1 service

sink

Prisons^b

1 per cell

1 per 15

Reformatories,

detention

centers, and

correctional

centers^b

1 service

sink

1 per 15

1 per 100

I-3

Employees in

reformatories,

detention

centers and

correctional

centers^b

1 per 25

1 per 15

1 per 500

1 per 35

1 per 15

1 per 750

-

1 per 100

1 per 1,000

-

Adult day care

and childcare

Retail stores,

service stations,

shops,

salesrooms,

markets and

shopping

1 service

sink

I-4

1

1 service

sink

6

Mercantile

M-1

___

centers

16

Hotels, motels,

and boarding

houses

1 per

sleeping unit

1 service

sink

R-1

R-2

1 per sleeping unit

____

(transient)

Dormitories,

fraternities,

sororities and

boarding

1 service

sink

1 per 10

1 per 8

1 per 100

houses (not

transient)

1 kitchen

sink per

dwelling

unit; 1

automatic

clothes

washer

Apartment

house

1 per

dwelling unit

R-2

1 per dwelling unit

_____

connection

per 20

dwelling

units

Congregate

living facilities

with 16 or

fewer

1 service

sink

R-3

1 per 10

1 per 8

1 per 100

_____

7

Residential

individuals

1 kitchen

sink per

dwelling

unit; 1

1 and 2 family

dwelling and

lodging houses

with five or

1 per

dwelling unit

1 per dwelling unit

automatic

17

fewer

guestrooms

clothes

washer

connection

per

dwelling

unit

Congregate

living facilities

with 16 or

fewer

1 service

sink

R-4

1 per 10

1 per 8

1 per 100

individuals

Structure for

the storage of

goods,

warehouses,

storehouses,

and freight

depots. Low

and moderate

hazard.

S-1

S-2

1 service

sink

8

Storage

1 per 100

_____

1 per 1,000

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.

18

R 408.30758a High and low drinking fountains minimum number.

Rule 758a. Section 410.3.1 is added to the code to read as follows:

410.3.1. High and low drinking fountains minimum number. Where drinking fountains

are required, no fewer than 2 drinking fountains shall be provided. One drinking fountain

shall comply with the requirements for people who use a wheelchair, and 1 drinking

fountain shall comply with the requirements for standing individuals.

Exceptions:

1. A single drinking fountain with 2 separate spouts that complies with the

requirements for individuals who use a wheelchair and standing individuals shall be

allowed to be substituted for 2 separate drinking fountains.

2. Where drinking fountains are primarily for children’s use, the drinking fountains for

people using wheelchairs shall be allowed to comply with the children’s provisions in

ICC A117.1 and drinking fountains for standing children shall be allowed to have the

spout at 30 inches, 762 mm, minimum above the floor.

3. Referencing building code for all height requirements of drinking fountains and

water coolers.

R 408.30758b Water supply.

Rule 758b. Section 411.3 is added to the code to read as follows:

411.3. Water supply. Where hot and cold water are supplied to an emergency shower or

eyewash station, the temperature of the water supply shall only be controlled by

temperature-actuated mixing value complying with ASSE 1071. Where water is supplied

directly to an emergency shower or eyewash station from a water heater, the water heater

shall comply with ASSE 1085, See section 607.1.2.

R 408.30762 Floor drains; public toilet rooms.

Rule 762. Section 413.5 is added to the code to read as follows:

413.5. Floor drains; public toilet rooms. In all public toilet rooms that contain a

combination of 3 or more water closets or urinals, at least 1 approved floor drain shall be

installed connecting to the sanitary system. However, stall urinals may serve as floor

drains if the entire floor can be drained to the urinals.