Section 27-2068. Sanitary facilities in certain multiple dwellings erected after nineteen hundred twenty-nine

a. Fireproof multiple dwelling. In a  fireproof multiple dwelling erected  after  April  eighteenth,  nineteen
  hundred  twenty-nine,  in  which  any  living room opens directly upon a
  public hall without any intervening room, foyer or passage, or in  which
  any suites of two living rooms open upon a foyer giving direct access to
  a  public  hall,  there  shall  be one water closet for every three such
  living rooms on a story. Every such water closet shall be accessible  to
  one or more such rooms without passage through a public hall or bedroom.
  In a class B multiple dwelling, where any such living room does not have
  access  to  a  water  closet  without  passage  through a public hall or
  bedroom, there shall be at least one water closet for every such fifteen
  living rooms or fraction thereof, and every such living room shall  have
  access to a water closet through a public hall.
    b.  Fireproof  class  B  dwelling.  In  a  fireproof  class B multiple
  dwelling erected after April eighteenth, nineteen  hundred  twenty-nine,
  in  which  every living room, excluding rooms occupied by management and
  maintenance personnel of the dwelling, opens directly to a  public  hall
  without  passing  through  any  other room, foyer or private hall, there
  shall be two water closets for the first twenty living rooms or fraction
  thereof, and one additional water closet  for  each  additional  fifteen
  living  rooms  or fraction thereof. Such water closets may be located in
  compartments or in general toilet rooms  accessible  from  every  living
  room on the floor. A urinal may be substituted for a water closet on any
  story  where  seventeen or more rooms are occupied exclusively by males,
  but not more than one-quarter of the required facilities may be urinals.
    c. Nonfireproof class B dwellings. In a nonfireproof class B  multiple
  dwelling  erected  after April eighteenth, nineteen hundred twenty-nine,
  there shall be one water closet and washbasin  for  every  seven  living
  rooms.  One  such  water  closet  compartment  with  washbasin  shall be
  accessible to every room on each floor.
    d. Sanitary facilities for employees of tenants. If employees  of  the
  tenants  occupy  two  or  more rooms opening directly to the same public
  hall in a fireproof multiple dwelling erected  after  April  eighteenth,
  nineteen  hundred  twenty-nine,  there shall be one water closet for the
  first four rooms or fraction thereof and one additional water closet for
  each additional seven rooms or fraction thereof. Such  facilities  shall
  be  accessible  either  directly  from  such rooms or through the public
  halls.