26 September 2006
Exception: Non-mission essential buildings of Type I or II construction less than
1,394 m2 (15,000 ft2) gross floor area or Type III, Type IV and Type V
construction less than 465 m2 (5,000 ft2) do not require automatic sprinkler
protection unless specified by Chapter 6.
For additions or partial renovations of existing buildings, the entire
gross floor area of the building must determine if sprinkler protection needs to be
included in the project. The addition or portion of the building being renovated
must include sprinkler protection and be designed to support sprinklers for the
remainder of the building when it is renovated.
Sprinkler systems must use equipment and devices listed by a NRTL.
Sprinkler Density and Hose Stream Requirements.
Building and structures requiring sprinkler protection must be provided with
sprinkler systems that are designed using the Area/Density Method of NFPA 13,
except that the design density, design area, hose stream allowance and duration
of supply requirements must be in accordance with Table 4-1.
Installations must evaluate the water quality (pertaining to corrosion) to
determine if Schedule 10 steel pipe can be used for sprinkler system piping
greater than 50mm (2-inches). Water quality analysis must evaluate both micro-
biological and galvanic corrosion. Evidence of either corrosion potential or past
history of sprinkler system failure due to corrosion would prohibit the use of
Schedule 10 pipe. For dry-pipe and preaction sprinkler systems, use Schedule
40 steel piping for all sizes without exception.
Exception: For DLA, use Schedule 40 steel piping for all sprinkler systems.