We have a two story apartment building, and we are installing an NFPA 13R wet pipe sprinkler system.
Is an outside hose demand required to be included within the calculations? There are no inside hose stations. If outside hose demand is required, is the demand the same as light hazard? 100 gpm? We couldn't find a reference to this in NFPA 13R. Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe
5 Comments
Pete
7/21/2021 07:06:51 am
Hose allowance is not required in 13R calculations.
Reply
Dennis
7/21/2021 08:06:58 am
No requirement for Hose Allowance. However, if it is a combined service, be sure to include your domestic demand!
Reply
Bobby
4/20/2023 09:24:50 am
What if there are multiple buildings? Do you include domestic demand for all buildings, or just one?
Reply
Nathan
4/21/2023 11:26:56 am
All buildings being fed by the shared fire/domestic loop or main need to be included in domestic demand calcs. Check the local jurisdiction for which domestic demand calc method is accepted.
Jesse
7/21/2021 08:09:15 am
There is no hose allowance in a 13R calc. But, you may have to account for a domestic demand depending on your system.
Reply
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