(a) A closed circuit electrically supervised fire alarm signal system shall be installed in the following types of buildings:
(1) Hotels, motels, lodging houses, dormitories, and single room occupancies having more than fifteen sleeping rooms or accommodating more than fifteen lodgers above the first or ground story.
(2) Buildings classified in occupancy group H-1 or H-2. Systems installed in buildings where persons are restrained under the jurisdiction of an agency of the city or the state of New York may be modified to comply with the regulations of such agency, when such modification is approved by the commissioner.
(3) Day care agencies having a board of health permit for the accommodation of more than thirty children. If such day care agency is located at the grade level of the building, the fire alarm system is required only in the premises of the day care agency. If the day care agency is located at other than grade level of the building, an approved fire alarm system shall be provided throughout the building.
(4) Health clubs and turkish or other special treatment bath houses where there are sleeping accommodations for more than fifteen persons on the premises.
(5) Department stores or retail sales establishments having one or more floors above the street floor to which the public is admitted or with a total floor area of twenty thousand or more gross square feet.
(6) All public schools; also all private schools and university teaching buildings more than one story in height. If a school premise is located at other than a grade level of a building, an approved fire alarm system shall be provided throughout the building.
(7) Single and multi-tenant factory buildings more than two stories in height in which more than twenty-five persons are employed above the ground floor, as provided by section two hundred seventy-nine of the labor law. In buildings where more than ten per cent of the building occupancy is engaged in manufacturing, the building shall have an approved fire alarm system throughout.
(8) Buildings housing a motion picture studio.
(9) Buildings classified in occupancy group E, seventy-five feet or more in height and buildings classified in such occupancy group occupied or arranged to be occupied by an occupant load of more than one hundred persons above or below the street level or more than a total of five hundred persons in the entire building.
(10) a. Stages, dressing rooms and property rooms used in conjunction with all places of assembly used as cabarets.
b. Places of assembly used as a cabaret.
(b) Areas containing gas distribution piping operating at levels above fifteen psig shall have a combustible gas detection-alarm system, and a suitable fire protection system as approved by the commissioner with the concurrence of the fire commissioner.