Add Hose Connection to the Sprinkler System?

8/7/2023

Occasionally, additional hose valve connections are required due to the failure of meeting a 150-ft / 200-ft travel distance to a hose connection.

Can you put a hose valve connection on a sprinkler system without a standpipe?

How do you reflect this in a hydraulic calculation?

A most-remote standpipe would require 500 gpm in a standpipe calculation. Thanks in advance.

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5 Comments

Dan Wilder

8/7/2023 08:29:09 am

If the requirement is coming out of the IBC/IFC 905.4.6, it needs to be per NFPA 14 (905.2 provides the NFPA 14 reference). They have been confused a lot and the NFSA EOD April 2020 #3 addressed it. A hose valve attached to a sprinkler system is not a standpipe system and is treated separately.

If the design is only within NFPA 13 (older systems) the below referenced sections apply and the intent is not for active Fire Department use but mop up activities.

22' - 16.5.2 Hose connections for Fire Department use
22' - 19.1.6.3 Inside hose allowance requirements
22' - 20.15.2.5 Storage & water supply requirements.

S Choi

8/20/2023 03:06:37 pm

Dan: Can you enlighten me where you can find 22"-16.5.2 , 19.1.6.3 and 20.15.2.5. Is this in 2022 NFPA 13 which is not adopted by any code? Thanks.

Glenn Berger

8/7/2023 09:10:22 am

Concur with Dan's response -

Also, a Class I hose outlet must be separate from the sprinkler system distribution. If this is your most remote outlet, treat it as such.

Casey Milhorn

8/7/2023 09:12:17 am

No you would not be able to add a hose valve from the sprinkler systems, that would be a hose station as Dan said.

I highly recommend asking the AHJ if they even want the additional hose valve. Many AHJs I talk to say they would just add more hose if they find themselves in a situation where they are in between hose valve lay lengths. They want to attack out of a fire rated stair enclosure, not go searching for a hose valve station somewhere on the floor.

They might be okay with just a hose station off the sprinkler system for clean up purposes, or to reach those remote corners, and not a full hose valve off of the standpipe.

If you are still made to have the additional hose valve, remember it can be fed from a branch line off the standpipe (typically 2-1/2" in size) or from an additional standpipe. There is a time and place to do either way.

S choi

8/20/2023 03:09:44 pm

Some Fire Department like to pull more hose. But some of AHJ will require hose valve as mitigation measure if they cannot meet 150 feet hose pull requirement. I am asking designer to share their experience how they treat these hose valve. Thanks.

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