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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 Page 1 of 3 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 Page 2 of 3 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 This section intentionally left blank. INFORMATION This section intentionally left blank. 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 Page 3 of 3 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