Section 27-932. When required

(a) Wet standpipe systems shall be installed:
    (1)  In  all  buildings  or  portions thereof exceeding six stories or
  seventy-five feet in height, except that open parking  structures  shall
  not  require  installation  of a wet standpipe system unless they exceed
  ten parking levels or seventy-five feet in height.
    (2) In all portions of buildings two or more stories  in  height  that
  have a floor area of ten thousand square feet or more on any floor.
    (b)  Where  standpipes are required by the height and area limitations
  of subdivision (a) of this section, a  non-automatic  or  automatic  dry
  standpipe  system  may  be installed in lieu of the wet standpipe in all
  buildings classified in occupancy  group  G  not  over  six  stories  or
  seventy-five  feet  in height. A dry standpipe system shall be installed
  in all open parking structures which exceed  three  parking  levels  and
  contain not more than ten parking levels.
    (c)  A  standpipe system shall be installed in all buildings exceeding
  three stories in height that have an area exceeding seven thousand  five
  hundred  square  feet  on  any floor and where a standpipe system is not
  otherwise required by the provisions of this subchapter. A  nonautomatic
  or automatic dry system may be used in lieu of the wet standpipe.
    (d)  The  following  buildings  shall be exempt from the provisions of
  subdivisions (a), (b) and (c) of this section:
    (1) Buildings classified in occupancy groups F, G, H, and  J  that  do
  not  exceed  two  stories or thirty feet in height and an area of twenty
  thousand square feet on any floor and are provided with hand or portable
  fire extinguishers as required by the fire department.
    (2) Buildings classified in occupancy groups E, F, G, H,  and  J  that
  require  a wet standpipe as provided in paragraph two of subdivision (a)
  and subdivision (c) of this section but not  exceeding  six  stories  or
  seventy-five  feet  in  height  and that are equipped throughout with an
  automatic wet or dry sprinkler system connected to a central supervisory
  station, and such system complies with the provision of this subchapter.