Buildings used or occupied for residential use, as defined and classified
in this Part 1, shall conform to the use, occupancy, size, light, ventilation,
vertical travel, exit and egress requirements, to provide for a safe and healthful
environment.
Buildings, for the purpose of this Part 1, shall be classified in respect
to their uses or occupancies as follows:
A. One- and two-family dwellings.
B. Multiple dwellings. Apartment houses, apartment hotels,
hotels, motels, boatels, lodging houses, rooming houses, boardinghouses, clubs,
dormitories, and fraternity and sorority houses.
C. Mixed-occupancy buildings.
(1) Residential and accessory use parts shall be classified
as multiple dwellings.
(2) Nonresidential parts shall be classified in accordance
with their occupancy and use under the Uniform Code. Components of such parts,
including but not limited to structural elements, mechanical and electrical
service equipment, and fire-protection equipment, shall be subject to applicable
provisions of this Part 1 and generally accepted standards of engineering
and fire-protection practice, so as to ensure the health, safety, and welfare
of the residential occupants of the building.
Elevators and escalators shall be maintained in good and safe operating
condition and adequately lighted at all times.