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The 2015 Edition of the International Fire Code added some clarity for water supply for buildings with automatic sprinkler systems.
The Annex B material (not enforceable unless adopted) states: B105.3 Water supply for buildings equipped with an automatic sprinkler system. For buildings equipped with an approved automatic sprinkler system, the water supply shall be capable of providing the greater of: 1. The automatic sprinkler system demand, including hose stream allowance. 2. The required fire-flow. In the past I've heard several people say that only inside hose allowances are included when determining the total volume required (which sizes the water storage tank). Would you interpret this section of IFC to include both the inside and outside hose allowance? Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe
3 Comments
Clifford Schulze
6/13/2019 10:17:48 am
If the outside hydrants are on the same main drawing water from the storage tanks, then yes, the demand from them must be included.
The design criteria shall be include a hose stream allowance this hose stream allowance is for inside and outside hoses.
Hassan
3/30/2023 08:36:12 am
You use the table to combine inside and outside, it is just if there exist both inside and outside. If there is only inside, outside can be zero, for example. Leave a Reply. |
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