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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)
The door to a single-user toilet room or single-user bathing room shall have a locking mechanism controlled by the occupant. When engaged, the locking mechanism shall visually indicate to those outside the room that the room is occupied.
(Added Coun. J. 10-14-21, p. 37722, Art. IV, § 6)
Single-user toilet rooms and single-user bathing rooms shall be enclosed on all sides by walls or partitions which extend from the floor to the ceiling. Adequate light and ventilation shall be provided within each enclosure. Windows or glazing shall be obscured to provide privacy to the occupant.
(Added Coun. J. 10-14-21, p. 37722, Art. IV, § 6)
Where two or more toilet facilities are provided, the required number of lavatories shall be distributed proportionally to the required number of water closets, provided that the ratio of lavatories to water closets and urinals within a toilet facility shall not be less than 1:2. In no case shall the number of lavatories within a toilet facility containing at least two lavatories be required to exceed three-quarters of the sum of water closets and urinals within the toilet facility.
(Added Coun. J. 10-14-21, p. 37722, Art. IV, § 6; Amend Coun. J. 12-14-22, p. 58278, Art. VI, § 2)
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