CODES

ADOPTS WITH AMENDMENTS:

International Building Code 2009 (IBC 2009)

Copyright

Preface

Chapter 1 Administration

Chapter 2 Definitions

Chapter 3 Use and Occupancy Classification

Chapter 4 Special Detailed Requirements Based on Use and Occupancy

Chapter 5 General Building Heights and Areas

Chapter 6 Types of Construction

Chapter 7 Fire and Smoke Protection Features

Chapter 8 Interior Finishes

Chapter 9 Fire Protection Systems

Chapter 10 Means of Egress

Chapter 11 Accessibility

Chapter 12 Interior Environment

Chapter 13 Energy Efficiency

Chapter 14 Exterior Walls

Chapter 15 Roof Assemblies and Rooftop Structures

Chapter 16 Structural Design

Chapter 17 Structural Tests and Special Inspections

Chapter 18 Soils and Foundations

Chapter 19 Concrete

Chapter 20 Aluminum

Chapter 21 Masonry

Chapter 22 Steel

Chapter 23 Wood

Chapter 24 Glass and Glazing

Chapter 25 Gypsum Board and Plaster

Chapter 26 Plastic

Chapter 27 Electrical

Chapter 28 Mechanical Systems

Chapter 29 Plumbing Systems

Chapter 30 Elevators and Conveying Systems

Chapter 31 Special Construction

Chapter 32 Encroachments Into the Public Right-Of-Way

Chapter 33 Safeguards During Construction

Chapter 34 Existing Buildings and Structures

Chapter 35 Referenced Standards

Appendix O Approved Testing and Inspection Agencies

Appendix P Approved National Evaluation and Accreditation Services

The provisions of this chapter and the plumbing code shall govern the erection, installation, alteration, repairs, relocation, replacement, addition to, use or maintenance of plumbing equipment and systems. Plumbing systems and equipment shall be constructed, installed and maintained in accordance with the plumbing code.

Plumbing fixtures shall be provided for the type of occupancy and in the minimum number shown in Table 2902.1. Types of occupancies not shown in Table 2902.1 shall be considered individually by the building official. The number of occupants shall be determined by this code. Occupancy classification shall be determined in accordance with Chapter 3. When the actual occupant load will be significantly different than that determined by Section 1004 of the building code, the building official may establish an alternate basis for determining the occupant load. This alternate basis shall be included in the special stipulations and conditions section of the certificate of occupancy issued for that structure pursuant to Section 110. For accessibility requirements, see “Chapter 11, Accessibility” of this code.

Exception: Facilities are not required in buildings less than 100 square feet in area if fixtures are available within 500 feet of the building.

TABLE 2902.1

MINIMUM NUMBER OF REQUIRED PLUMBING FIXTURESa (See Sections 2902.2 and 2902.3)

No.CLASSIFICATIONOCCUPANCYDESCRIPTIONWATER CLOSETS
(URINALS)h
LAVATORIESBATHTUBS/ SHOWERSDRINKING FOUNTAINSe, f
OF THE
PLUMBING CODE)
OTHER
MALEFEMALEMALEFEMALE
1AssemblyA-1dTheaters and other
buildings for the
performing arts and
motion pictures
1 per 1251 per 651 per 2001 per 5001 service sink
A-2dNightclubs, bars,
taverns, dance halls and buildings for similar purposes
1 per 401 per 401 per 751 per 5001 service sink
Casinos1:1-1003:1-501:1-2001 service sink
4:51-1002:201-400
2:101-2006:101-2003:401-750
3:201-4008:201-400Over 750, add one fixture for each additional 500 persons
Over 400, add one fixture each additional 250 males, and one for each 150 females
Restaurants, banquet
halls and food courts
1 per 751 per 751 per 2001 per 5001 service sink
A-3dAuditoriums without permanent seating, art galleries, exhibition
halls, museums, lecture halls, libraries, arcades
and gymnasiums
1 per 1251 per 651 per 2001 per 5001 service sink
Passenger terminals and transportation facilities1 per 5001 per 5001 per 7501 per 1,0001 service sink
Places of worship and
other religious services
1 per 1501 per 751 per 2001 per 1,0001 service sink
A-4Coliseums, 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 2001 per 1501 per 1,0001 service sink
A-5Stadiums, 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 60 for the
remainder
exceeding
1,520
1 per 2001 per 1501 per 1,0001 service sink
2BusinessBBuildings for the transaction of
business, professional services, other
services involving merchandise, office buildings, banks, light industrial and
similar uses
1 per 501 per 801 per 1001 service sinki
3EducationalEEducational facilities1 per 501 per 501 per 1001 service sink
4Factory and
industrial
F-1 and F-2Structures in which
occupants are
engaged in work
fabricating, assembly
or processing of
products or materials
1 per 1001 per 100See Section

411 of the plumbing code
1 per 4001 service sink
5InstitutionalI-1Residential care1 per 101 per 101 per 81 per 1001 service sink
I-2Hospitals,
ambulatory nursing
home patientsb
1 per per roomc1 per per roomc1 per 151 per 1001 service sink
Employees, other
than residential careb
1 per 251 per 351 per 100
Visitors, other
than residential care
1 per 751 per 1001 per 500
I-3Prisonsb1 per cell1 per cell1 per 151 per 1001 service sink
I-3Reformatories,
detention centers and
correctional centersb
1 per 151 per 151 per 151 per 1001 service sink
Employeesb1 per 251 per 351 per 100
I-4Adult day care and
child care
1 per 151 per 1511 per 1001 service sink
6MercantilegMRetail stores, service
stations, shops,
salesrooms, markets
and shopping centers
1 per 5001 per 7501 per 1,0001 servicei sink
7ResidentialR-1Hotels, motels, (transient)1 per sleeping unit1 per sleeping unit1 per sleeping unit1 service sink
R-2Dormitories,
fraternities, sororities
(not transient)
1 per 101 per 101 per 81 per 1001 service sink
R-2Apartment house1 per dwelling unit1 per dwelling unit1 per

dwelling unit
1 kitchen
sink per
unit; 1
clothes
washer
connection
per 20
units
R-3Multiple single
family dwellings
1 per dwelling unit1 per dwelling unit1 per 1 kitchen sink per dwelling
unit;
1 automatic clothes washer connection per dwelling unit
R-4Congregate living
facilities with 16 or
fewer persons and other R-3 occupancies
1 per 101 per 101 per 81 per 1001 service sink
8StorageS-1

S-2
Structures for the
storage of goods,
warehouses,
storehouses and
freight depots, low
and moderate hazard
1 per 1001 per 100See Section 411 of the plumbing code1 per 1,0001 service sink
  1. The fixtures shown are based on one fixture being the minimum required for the number of persons indicated or any fraction of the number of persons indicated. The number of occupants shall be determined by this code.
  2. Toilet facilities for employees shall be separate from facilities for inmates or patients.
  3. A single-occupant toilet room with one water closet and one lavatory serving not more than two adjacent patient sleeping units shall be permitted where such room is provided with direct access from each patient sleeping unit and with provisions for privacy.
  4. The occupant load for seasonal outdoor seating and entertainment areas shall be included when determining the minimum number of facilities required.
  5. The minimum number of required drinking fountains shall comply with Table 2902.1 and Chapter 11.
  6. Drinking fountains are not required for an occupant load of 15 or fewer.
  7. Mercantile occupancies are not required to provide public facilities when the occupant load is 50 or less.
  8. In each bathroom or toilet room, urinals shall not be substituted for more than 67 percent of the required water closets in assembly and educational occupancies. Urinals shall not be substituted for more than 50 percent of the required water closets in all other occupancies.
  9. For business and mercantile occupancies with an occupant load of 15 or fewer, service sinks shall not be required.

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 2902.1. Fractional numbers resulting from applying the fixture ratios of Table 2902.1 shall be rounded up to the next whole number. For calculations involving multiple occupancies, such fractional numbers for each occupancy shall first be summed and then rounded up to the next whole number.

Exception: 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 percent of each sex.

Fixtures located within family or assisted use toilet and bathing rooms required by Section 1109.2.1 are permitted to be included in the number of required fixtures for either the male or female occupants in assembly and mercantile occupancies.

Where plumbing fixtures are required, separate facilities shall be provided for each sex.

Exceptions:

  1. Separate facilities shall not be required for dwelling units and sleeping units.
  2. Separate facilities shall not be required in structures or tenant spaces with a total occupant load, including both employees and customers, of 15 or fewer.
  3. Separate facilities shall not be required in mercantile occupancies in which the maximum occupant load is 100 or fewer.
Where a building or tenant space requires a separate toilet facility for each sex and each toilet facility is required to have only one water closet, two family/assisted-use toilet facilities shall be permitted to serve as the required separate facilities. Family or assisted-use toilet facilities shall not be required to be identified for exclusive use by either sex as required by Section 2902.4.
Customers, patrons and visitors shall be provided with public toilet facilities in structures and tenant spaces intended for public use as required in this code. The number of plumbing fixtures located within the required toilet facilities shall be provided in accordance with Section 2902.1 for all users. Employees shall be provided with toilet facilities in all occupancies. Employee toilet facilities shall either be separate or combined employee and public toilet facilities.
The route to the public toilet facilities required by Section 2902.3 shall not pass through kitchens, storage rooms, closets or similar spaces not available to the public. Access to the required facilities shall be from within the building or from the exterior of the building. All routes shall comply with the accessibility requirements of this code. The public shall have access to the required toilet facilities at all times that the building is occupied. The building owner is permitted to control access to the toilet facilities. Where such access is controlled, a sign shall be posted indicating how access is to be obtained.

In occupancies other than covered mall buildings, the required public and employee toilet facilities shall be located not more than one story above or below the space required to be provided with toilet facilities and the path of travel to such facilities shall not exceed a distance of 500 feet (152 400 mm).

Exception: The location and maximum travel distances to required employee facilities in factory and industrial occupancies are permitted to exceed that required by this section, provided that the location and maximum travel distance are approved.

In covered mall buildings, the required public and employee toilet facilities shall be located not more than one story above or below the space required to be provided with toilet facilities, and the path of travel to such facilities shall not exceed a distance of 300 feet (91 440 mm). In covered mall buildings, the required facilities shall be based on total square footage, and facilities shall be installed in each individual store or in a central toilet area located in accordance with this section. The maximum travel distance to the central toilet facilities in covered mall buildings shall be measured from the main entrance of any store or tenant space. In covered mall buildings, where employees’ toilet facilities are not provided in the individual store, the maximum travel distance shall be measured from the employees’ work area of the store or tenant space.
Where pay facilities are installed, such facilities shall be in excess of the required minimum facilities. Required facilities shall be free of charge.
A legible sign designating the sex shall be provided in a readily visible location near the entrance to each toilet facility. Signs for accessible toilet facilities shall comply with Chapter 11.
Directional signage indicating the route to the public facilities shall be posted in accordance with Section 3107. Such signage shall be located in a corridor or aisle, near the entrance to the facilities for customers and visitors.
Drinking fountains shall not be required to be located in individual tenant spaces provided that public drinking fountains are located within a travel distance of 500 feet (152 400 mm) of the most remote location in the tenant space and not more than one story above or below the tenant space. Where the tenant space is in a covered or open mall, such distance shall not exceed 300 feet (91 440 mm). Drinking fountains shall be located on an accessible route.

Each water closet utilized by the public or employees shall occupy a separate compartment with walls or partitions and a door enclosing the fixtures to ensure privacy.

Exceptions:

  1. Water closet compartments shall not be required in a single-occupant toilet room with a lockable door or in a family or assisted use toilet room.
  2. Toilet rooms located in day care and child care facilities and containing two or more water closets shall be permitted to have one water closet without an enclosing compartment.
  3. This provision is not applicable to toilet areas located within Group I-3 housing areas.
Deleted.

Interior finish surfaces of toilet rooms shall comply with Section 1210.

For SI: 1 inch = 25.4 mm.

FIGURE 2903.3.1

FIXTURE CLEARANCES

Toilet rooms shall not open directly into a room used for the preparation of food for service to the public.

The supply lines and fittings for every plumbing fixture shall be installed so as to prevent backflow.
Plumbing fixtures shall be installed so as to afford easy access for cleaning both the fixture and the area around the fixture.
Fixtures shall be set level and in proper alignment with reference to adjacent walls.

A water closet, urinal, lavatory or bidet shall not be set closer than 15 inches (381 mm) from its center to any side wall, partition, vanity or other obstruction, or closer than 30 inches (762 mm) center-to-center between adjacent fixtures. There shall be not less than a 21-inch (533 mm) clearance in front of the water closet, urinal, lavatory or bidet to any wall, fixture or door. Water closet compartments shall be not less than 30 inches (762 mm) in width and not less than 60 inches (1524 mm) in depth for floor-mounted water closets and not less than 30 inches (762 mm) in width and 56 inches (1422 mm) in depth for wall-hung water closets.

Figure 2904.3.1. Deleted.

In employee and public toilet rooms, the required lavatory shall be located in the same room as the required water closet.
Connections between the drain and floor outlet plumbing fixtures shall be made with a floor flange. The flange shall be attached to the drain and anchored to the structure. Connections between the drain and wall-hung water closets shall be made with an approved extension nipple or horn adaptor. The water closet shall be bolted to the hanger with corrosion-resistant bolts or screws. Joints shall be sealed with an approved elastomeric gasket, flange-to-fixture connection complying with ASME A112.4.3 or an approved setting compound.

Floor flanges for water closets or similar fixtures shall not be less than 0.125 inch (3.2 mm) thick for brass, 0.25 inch (6.4 mm) thick for plastic, and 0.25 inch (6.4 mm) thick and not less than a 2-inch (51 mm) caulking depth for cast-iron or galvanized malleable iron.

Floor flanges of hard lead shall weigh not less than 1 pound, 9 ounces (0.7 kg) and shall be composed of lead alloy with not less than 7.75-percent antimony by weight. Closet screws and bolts shall be of brass. Flanges shall be secured to the building structure with corrosion-resistant screws or bolts.

Floor outlet fixtures shall be secured to the floor or floor flanges by screws or bolts of corrosion-resistant material.
Wallhung water closet bowls shall be supported by a concealed metal carrier that is attached to the building structural members so that strain is not transmitted to the closet connector or any other part of the plumbing system. The carrier shall conform to ASME A112.6.1M or ASME A112.6.2.
Joints formed where fixtures come in contact with walls or floors shall be sealed.
Deleted.
Where any fixture is provided with an overflow, the waste shall be designed and installed so that standing water in the fixture will not rise in the overflow when the stopper is closed, and no water will remain in the overflow when the fixture is empty.

The overflow from any fixture shall discharge into the drainage system on the inlet or fixture side of the trap.

Exception: The overflow from a flush tank serving a water closet or urinal shall discharge into the fixture served.

Fixtures with concealed slip joint connections shall be provided with an access panel or utility space at least 12 inches (305 mm) in its smallest dimension or other approved arrangement so as to provide access to the slip joint connections for inspection and repair.
Resources