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The International Fire Code requires a fire flow be available for a structure that is determined with an approved method. Aside from the Appendix B guidance in the International Fire Code, there's multiple other methods for determining the amount and duration of fire flow that is required for a building.
My question is when determining whether there's enough flow available to meet this determined amount, where is it calculated relative to a building? Does there just need to be enough water available within 200 feet of the building, or at a main near the site, or perhaps on hydrants adjacent to the building? I'm very familiar with standpipe hose calculations, which seems like a similar application to this, but I'm not sure where to actually apply the fire flow to complete the calculation. Posted anonymously by a member for discussion. Discuss this | Subscribe
2 Comments
Brian Gerdwagen FPE
1/21/2019 10:06:32 am
This is a calculation to judge the health of the water supply. This is usually at the city main. This is not added to sprinkler, standpipe, or hose calculations.
PETE
1/21/2019 10:37:18 am
I apply it at the most hydraulically remote private hydrant to the city connection as a hose demand @ 20psi. If there are no private hydrants on the service main, then the 20psi intersection with the city flow test (extrapolated) can be used to show that the flow is in excess of the required fire flow. You can use the following: Leave a Reply. |
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