the specified density.]
2.2.5
AFFF Solution Application Density
Size system to provide the specified density when the system is discharging
the specified total maximum required flow. Application to horizontal
surfaces below the ceiling sprinklers shall be 110 mL/sec per sq meter 0.16
gallons per minute (gpm) per square foot with simultaneous operation of
[_____] operating foam monitor nozzles, [and] [_____] operating foam hose
lines[, and with outside water hose stream requirements of [_____] mL/sec
gpm].
2.2.6
Sprinkler Discharge Area
**************************************************************************
NOTE: Select the first option for pre-action
systems only and refer to MIL-HDBK-1008 and the
appropriate NFPA standard(s) governing the
particular facility to determine the discharge area
required. Select the second option for deluge
systems only and refer to NFPA 409 to determine the
discharge area required for hangars.
**************************************************************************
[Area shall be the hydraulically most remote [_____] square meter foot area
as defined by NFPA 13.]
[Area shall be [that protected by each riser] [based on the [15.25] [22.75]
[30.50] meter [50] [75] [100] foot radius rule as determined in accordance
with NFPA 409 for Type I aircraft hangars].]
2.2.7
Friction Losses
Calculate losses in pipe in accordance with the Hazen-Williams Formula with
'C' value of 100 for steel pipe [except 120 for steel pipe used in deluge
systems], 150 for copper tube, and 140 for cement lined ductile iron pipe.
2.2.8
Location of Sprinkler Heads
Location of heads in relation to the ceiling and spacing of sprinkler heads
shall conform to NFPA 13 for extra hazard occupancy. The spacing of
sprinklers on the branch lines shall be essentially uniform.
2.2.9
Water Supply
**************************************************************************
NOTE: Select first option if the water supply is
provided directly from the base water distribution
system and show or specify the point of connection.
Select second option if the water supply is provided
from fire pumps dedicated to the AFFF system, which
are taking suction from a static water source.
Select third option if the water supply is provided
from booster fire pumps being supplied from the base
water distribution system, and show or specify the
point of connection to the base system. Edit
Section 13920, "Fire Pumps" and include as part of
the project specification when using the second or
third option.
SECTION 13956N
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