Section 201. Requirements for fireproof construction

1. Every new multiple
  dwelling exceeding six stories or seventy-five feet in height  shall  be
  fireproof.
    2. The foregoing requirements shall not be construed as prohibiting:
    a.  Elsewhere  than  within,  or in the openings to, the public halls,
  stairs and shafts, the  use  of  wood  for  sleepers,  grounds,  nailing
  blocks,  underflooring,  finish  flooring,  interior  doors  with  their
  assemblies and saddles, floor base not more than  one  foot  in  height,
  picture  and  wall  moulding,  shelving,  closet  and  kitchen fixtures,
  cupboards, cabinets and wardrobes.
    b. The use of wood for window and for interior trim and finish  backed
  solidly  against,  or  filled with, incombustible material and elsewhere
  than within, or in the openings to, the public halls, stairs and shafts.