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1.1 Scope.1.1.1 This standard identifies a method of determining the minimum requirements for alternative water supplies for structural fire-fighting purposes in areas where the authority having jurisdiction (AHJ) determines that adequate and reliable water supply systems for fire-fighting purposes do not otherwise exist.1.1.2 An adequate and reliable municipal-type water supply is one that is sufficient every day of the year to control and extinguish anticipated fires in the jurisdiction, particular building, or building group served by the water supply.
This standard identifies a method of determining the minimum water supply necessary for structural fire-fighting purposes in areas where it has been determined that there is no water or inadequate water for fire fighting.
Criteria cover how to calculate minimum water supply requirements based on occupancy and construction classifications; water supply issues such as water use agreements, identifying water sources, and fire department connections; and dry hydrant design, location, and installation. Numerous annexes provide additional guidance on mobile water supply apparatus, large-diameter hose, portable pumps, municipal-type water systems, automatic sprinkler systems, and more.
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© National Fire Protection Association (NFPA) 2016