Section 27-114. Alterations of existing buildings

Subject to the provisions
  of section 27-105 of article one  of  this  subchapter,  and  except  as
  otherwise  specifically  provided  by  the  provisions of this code, the
  following  provisions  shall  apply  to  the  alteration   of   existing
  buildings,   whether   made  voluntarily  or  as  a  result  of  damage,
  deterioration or other cause,  provided,  however,  that  the  following
  alterations  shall conform with the requirements of this code regardless
  of magnitude or cost:
    (a) Alterations or additions to  existing  standpipes,  sprinklers  or
  interior  fire  alarm  and  signal  systems  or  a  change  in use or an
  enlargement  to  spaces  requiring  such  protection,  as  provided   in
  subchapter seventeen of this code.
    (b)  Alterations,  replacements  or new installations of equipment for
  heating or storing water, as provided in reference standard RS-16.
    (c) Projections beyond the street line, as provided in subchapter four
  of this code.
    (d) Sprinkler, alarm protection, and emergency  lighting  requirements
  for places of assembly, as provided in subchapter eight of this code.
    (e) Interior finish work, as provided in section 27-348.
    (f) Finish flooring and floor covering, as provided in section 27-351.
    (g)  The  installation  or  replacement  of  elevators, as provided in
  subchapter eighteen of this code.
    (h) The  installation,  alteration  or  replacement  of  refrigerating
  systems as provided in reference standard RS 13-6.