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For new buildings, additions and changes of occupancy, plumbing fixtures shall be provided in the minimum number shown in Table 18-29-403.1, based on the intended use of the building or space. Occupancies and uses not shown in Table 18-29-403.1 shall be considered individually by the Building Commissioner. Occupancies and uses and the number of persons (for various occupancies and uses) shall be as determined by Chapters 14B-3 and 14B-10 and Section 18-29-403.1.1.
For a printer-friendly PDF version of Table 18-29-403.1, please click here.
OCCUPANCY/USE | WATER CLOSETS (Urinals, see Section 18-29-419) | LAVA- TORIES k |
BATHTUB/ SHOWERS | DRINKING FOUNTAINS (See Section 18-29-410) | OTHER | ||
Male | Female
| ||||||
OCCUPANCY/USE | WATER CLOSETS (Urinals, see Section 18-29-419) | LAVA- TORIES k |
BATHTUB/ SHOWERS | DRINKING FOUNTAINS (See Section 18-29-410) | OTHER | ||
Male | Female
| ||||||
Assembly h | Restaurants, banquet halls and food courts; nightclubs, bars, taverns, dance halls and facilities for similar purposes f |
1 per each 30 to 90 | 1 per each 25 up to 100 | 1 per 50 | – | 1 per 500 | 1 service sink |
1 per each 50 above 90 | 1 per each 30 above 100 | ||||||
Facilities for viewing of the performing arts or motion pictures (fixed or movable seating); art galleries, conference centers, exhibition halls, lecture halls, libraries, and museums; facilities for indoor sporting events and athletic activities (with spectator seating) f |
1 per each 30 up to 60 | 1 per each 15 up to 60 | – | 1 per 1,000 | 1 service sink | ||
1 per each 70 between 61 and 340 | 1 per each 30 between 61 and 340 | ||||||
1 per each 100 above 340 | 1 per each 50 above 340 | ||||||
Places of religious worship b |
1 per each 30 up to 90 | 1 per each 20 up to 100 | – | 1 per 1,000 | 1 service sink | ||
1 per each 50 above 90 | 1 per each 25 above 100 | ||||||
Stadiums, bleachers and grandstands for viewing outdoor sporting events and activities f, g |
1 per each 60 up to 240 | 1 per each 30 up to 240 | – | 1 per 1,000 | 1 service sink | ||
1 per each 100 between 241 and 1040 | 1 per each 50 between 241 and 1040 | ||||||
1 per each 150 above 1040 | 1 per each 75 above 1040 | ||||||
Facilities for indoor sporting events and athletic activities (without spectator seating) f, g |
1 per each 30 up to 90 | 1 per each 25 up to 100 | 1 per 500 | 1 service sink | |||
1 per each 50 above 90 | 1 per each 30 above 100 | ||||||
Business | Facilities for the transaction of business, professional services, other services involving merchandise, banks, ambulatory care, light industrial activities and similar uses h |
1 for first 10 2 for 11 – 25 1 additional for each 25 in excess of 25 | 1 per 40 | – | 1 per 100 | 1 service sink | |
Educational | Education of children through the 12th grade level and child day care not classified as an institutional occupancy | – | 1 per 100 | 1 service sink | |||
Factory and industrial | Facilities in which occupants are engaged in fabrication, assembly or processing of products or materials | (See Section 411) | 1 per 400 | 1 service sink | |||
Institutional | Care recipients in custodial care facilities c |
1 per 10 care recipients | 1 per 10 care recipients | 1 per 8 care recipients | 1 per 100 care recipients | 1 service sink | |
Care recipients in hospitals and nursing homes c | 1 per room d | 1 per room d |
1 per 15 care recipients | 1 per 100 care recipients | 1 service sink per floor | ||
Adult or child day care c |
1 per 15 care recipients | 1 per 15 care recipients | Note e | 1 per 100 care recipients | 1 service sink | ||
Employees in custodial care facilities, hospitals, nursing homes and detention and correction facilities c |
1 per 25 employees | 1 per 35 employees | – | 1 per 100 employees | – | ||
Visitors in hospitals, nursing homes and detention and correctional facilities | 1 per 75 visitors | 1 per 100 visitors | – | 1 per 500 visitors | – | ||
Detainees in prisons c |
1 per cell | 1 per cell | 1 per 15 detainees | 1 per 100 detainees | 1 service sink | ||
Detainees in detention and correctional facilities other than prisons c |
1 per 15 detainees | 1 per 15 detainees | 1 per 15 detainees | 1 per 100 detainees | 1 service sink | ||
Mercantile | Retail stores, service stations, shops, salesrooms, markets, and shopping centers | 1 per each 25 up to 100 | 1 per each 15 up to 90 | 1 per 40 | – | 1 per 1,000 | 1 service sink |
1 per each 40 above 100 | 1 per each 25 above 90 | ||||||
Residential | Hotels (more than 10 transient occupants) | 1 per guestroom | 1 per guestroom | 1 per guestroom | – | 1 service sink | |
Dormitories and congregate living facilities (transient) with sleeping accommodations for more than 10 persons or more than 5 sleeping rooms | 1 per 10 | 1 per 10 | 1 per 8 | 1 per 100 | 1 service sink | ||
Dormitories and congregate living facilities (non-transient) with sleeping accommodations for more than 10 persons or more than 5 sleeping rooms | 1 per 10 | 1 per 10 | 1 per 8 | 1 per 100 | 1 service sink; 1 kitchen sink per dw. unit; 1 auto. clothes washer connect per 20 guests | ||
Apartment houses, townhouses and single-family dwellings | 1 per dwelling unit | 1 per dwelling unit | 1 per dwelling unit | – | 1 kitchen sink per dw. unit., 1 auto. clothes washer connect per 20 dw. units | ||
Congregate living facilities with accommodations for 10 or fewer persons and 5 or fewer sleeping rooms | 1 per dwelling unit | 1 per dwelling unit | 1 per dwelling unit | – | 1 kitchen sink per dw. unit; 1 auto. clothes washer connection | ||
Storage i |
Facilities for the storage of goods, warehouses, storehouses and freight depots | 1 per 100 | 1 per 100 | (see Section 411) | 1 per 1,000 | 1 service sink | |
Temporary structures and uses j |
Temporary uses intended for human occupancy | 1 per 300 | 1 per 300 | 1 per water closet | – | – | |
Construction sites | See Section 18-29-311 | ||||||
a. One fixture is required for the number of persons indicated or any fraction of the number of persons indicated.
b. Fixtures located in adjacent buildings under the ownership or control of the place of religious worship shall be made available during periods the facility is occupied.
c. Toilet facilities for employees shall be separate from facilities for care recipients or detainees. The number of care recipients or detainees used to determine the minimum number of fixtures required for care recipients or detainees and visitors shall be based on the capacity of the facility. The number of employees used to determine the minimum number of fixtures required for employees shall be the largest anticipated number of employees per shift.
d. A single-occupant toilet room with one water closet and one lavatory serving not more than two adjacent patient rooms shall be permitted where such room is provided with direct access from each patient room and with provisions for privacy.
e. For day nurseries, a maximum of one bathtub shall be required.
f. Where both indoor and seasonal outdoor seating or activity areas are provided, the occupant load for seasonal outdoor seating and activity areas located on private property, other than waiting areas, shall be included when determining the minimum number of fixtures required.
g. The required number and type of plumbing fixtures for swimming pools and swimming facilities shall be in accordance with Article 12.
h. Includes small assembly-type uses classified as Group B occupancies in accordance with Chapter 3 of the Chicago Building Code.
i. Toilet facilities and drinking fountains shall not be required to be provided for storage areas without regular human occupancy. At least one single-user toilet room shall be provided on the premises for employees and maintenance personnel.
j. For temporary structures and uses, where access to sewer and water connections is not readily available and adequate toilet facilities are not available within 500 feet (152.4 m), nonsewer-type toilets conforming to PSAI Z4.3 and portable water-based handwashing stations shall be provided in lieu of water closets and lavatories.
k. The number of lavatories in a toilet facility shall not be less than required by Section 18-29-403.1.4.
(Amend Coun. J. 3-27-02, p. 82090, § 3; Amend Coun. J. 11-13-07, p. 14999, Art. II, § 1; Amend Coun. J. 4-10-19, p. 100029, Art. XVI, § 9; Amend Coun. J. 10-14-21, p. 37722, Art. IV, § 6)
The total number of occupants shall be the occupant load determined in accordance with Section 1004 of the Chicago Building Code provided that such number may be reduced based on nonsimultaneous occupancy or access controls. Where separate facilities for each sex are required by Section 18-29-403.2 or the number of occupants of each sex is required by Table 18-29-403.1, the number of male occupants and the number of female occupants shall be the total number of occupants divided in half. Where the calculated number of male occupants is not a whole number, it shall be rounded down to the next whole number, and the calculated number of female occupants shall be rounded up to the next whole number so that the sum of male occupants and female occupants is equal to the total number of occupants.
Exceptions:
1. The total number of occupants 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. In such case, the total number of occupants shall be divided based on the approved statistical data.
2. Where a ratio is based on the number of care recipients, detainees or employees in a facility, the number shall be determined in accordance with Table 18-29-403.1, footnote c.
3. In mercantile occupancies with 7,500 square feet (697 m
2
) or more of gross floor area, the number of occupants shall be determined by dividing the net floor area used by the public or 25 percent of the gross floor area, whichever is smaller, by 100.
(Added Coun. J. 10-14-21, p. 37722, Art. IV, § 6)
To determine the required number of fixtures, the fixture ratio or ratios for each fixture type shall be applied to the number of occupants or the number of occupants of each sex in accordance with Table 18-29-403.1. Fractional numbers resulting from applying the fixture ratios of Table 18-29-403.1 shall be rounded up to the next whole number. For calculations involving multiple use classifications, the fractional numbers for each use shall first be summed and then rounded up to the next whole number.
Exception: One single-user toilet room in accordance with Section 18-29-403.1.3 shall be acceptable for a building or tenant space with an occupant load of 30 or fewer.
(Added Coun. J. 10-14-21, p. 37722, Art. IV, § 6)
Plumbing fixtures located in single-user toilet rooms and single-user bathing rooms, including family or assisted-use toilet rooms and bathing rooms required by Section 1109.2.1 of the Chicago Building Code, that comply with Sections 18-29-403.1.3.1 through 18-29-403.1.3.3 shall be included when determining whether the required number of plumbing fixtures is provided for a building or tenant space. Where the required number of plumbing fixtures for a building or tenant space is provided through a combination of single-user and separate facilities, the number of fixtures required in separate facilities for each sex shall be reduced proportionally.
Exceptions: Single-user toilet rooms and bathing rooms shall not be required to comply with Sections 18-29-403.1.3.1 through 18-29-403.1.3.4 where:
1. Located within a dwelling unit or sleeping unit.
2. Located within a Group E-2 or I occupancy and intended for use by care recipients or detainees.
(Added Coun. J. 10-14-21, p. 37722, Art. IV, § 6)
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