HomeMy WebLinkAbout405.032 - Group S2 Parking Structure Standpipe Hose Connections
FIRE PREVENTION MANUAL
FIRE EXTINGUISHING SYSTEMS
405.032 GROUP S2 PARKING STRUCTURE STANDPIPE
HOSE CONNECTIONS
EFFECTIVE: JULY 2008
Current Revision Date: 5/21/19 Next Revision Date: 5/21/22
Author’s Name/Rank:
Byron Beagles
Fire Prevention Engineer Review Level: 1
Administrative Support:
Sherrie L. Badertscher
Management Analyst II
Section 405.032
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PURPOSE
This policy has been established to provide direction for the requirements regarding
the installation of standpipe fire hose connections in California Building Code (CBC)
occupancy Group S-2 parking structures.
APPLICATION
This policy applies to areas within the City of Fresno (City) and contract service
areas where parking structures are proposed for development. This policy is for the
application of a building standard and therefore does not apply to those projects
under the jurisdiction of the Department of the State Architect (DSA).
OPERATIONAL POLICY
All S-2 parking structures 5000 square feet or more in area require a fire sprinkler
system per the Fresno Municipal Code (FMC). The exit access travel distance
allowed in an S-2 parking structure can be up to 400 feet to a stairway. Without
intermediate floor standpipe hose outlets a car fire in a large parking structure could
require the laying of multiple hose bundles to reach the fire from the ground floor or
a stairway standpipe outlet and significantly delay fire suppression activity.
The installation of standpipe systems is regulated by the California Fire Code (CFC),
the California Building Code (CBC), and the National Fire Protection Association
(NFPA) 14, Installation of Standpipe and Hose Systems. S-2 open parking
structures are typically constructed as Type I fire resistive buildings and the
CBC/CFC does not require that such structures be provided with fire sprinklers.
Standpipe systems are required for all parking structures four (4) or more stories in
height (the upper parking deck is a floor for purposes of determining number of
stories) or where the upper most parking deck exceeds 30 feet above the adjac ent
point of fire vehicle access. In recognition of the more restrictive fire sprinkler
requirements of the local fire sprinkler ordinance in the FMC, the intermediate hose
Section 405.032
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connections between stairways on fire sprinklered floors can be omitted due to the
proven ability of fire sprinklers to control vehicle fires in open parking structures and
will mitigate the additional time needed for fire hose deployment to achieve final
extinguishment. However, for the uncovered uppermost decks of open parking
structures or those with solar support structures complying with CBC Section 503.1,
Exception 3, that have no fire sprinkler protection, roof deck standpipe outlets must
be provided.
OPERATIONAL GUIDELINE
1-1/2 inch wet standpipe outlets are required to be installed so that all portions of the
roof parking area are within 130 feet of a standpipe outlet. For parking structures
with standpipe systems required due to building height, the uppermost stairway
standpipe outlet at the roof deck landing can be used in the layout of outlets to
comply with the 130 foot rule. The outlets must be located where they will be readily
accessible by firefighters, not blocked by parked vehicles, and protected from
vehicular damage as needed. The riser pipe between the roof deck and outlet must
be painted red; approved permanent signs may also be required as needed to aid in
the location of the outlets. Intermediate roof parking deck outlets may be supplied
directly from fire sprinkler pipe on the uppermost fire sprinklered floor below the
outlet with connection to minimum 2 inch fire sprinkler system pipe and extended
with two inch pipe to a 1-1/2” hose connection with cap.
PROCESS
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INFORMATION
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DEFINITIONS
1. Standpipe system: An arrangement of piping, valves, and hose connections
installed in multistory buildings and located so that fire hose connection by
firefighters can be made for the purposes of extinguishing a fire.
Section 405.032
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CROSS-REFERENCES
California Fire Code, Current edition
California Building Code, Current edition
Fresno Municipal Code, Current edition
National Fire Protection Association (NFPA)
NFPA 14, Installation of Standpipe and Hose Systems