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Threads provided for the fire department connections to sprinkler systems, standpipes, yard hydrants or any other fire hose connection shall be compatible with the connections used by the local fire department.
Regardless of the average spacing, fire hydrants shall be located such that all points on streets and access roads adjacent to a building are within the distances listed in Table C105.1. For SI: 1 foot = 304.8 mm, 1 gallon per minute = 3.785 L/m. Reduce by 100 feet for dead-end streets or roads.
REQUIRED NUMBER AND SPACING OF FIRE HYDRANTS. FIRE-FLOW REQUIREMENT (gpm) MINIMUM NUMBER OF HYDRANTS. AVERAGE SPACING BETWEEN HYDRANTSa, b, c, f, g (feet) MAXIMUM DISTANCE FROM ANY POINT ON STREET OR ROAD FRONTAGE TO A HYDRANTd, f, g. 1,750 or less.
The fire department connection (FDC) shall not be greater than 50 feet from a fire department access road. Water mains that are 6 inches in diameter and serving a fire hydrant shall not exceed 350 feet in length. Show an NFPA 13 FDC location within 200 feet of a fire hydrant as the truck travels.
This particular appendix gives one methodology based on the required fire flow that fire departments can work with to set a policy for hydrant distribution around new buildings and facilities in conjunction with Section 507.5.
FIRE HYDRANT TEST. A non -sprinklered building hydrant flow test will require a “Single Hydrant Test” of the closest hydrant by the apparatus travel distance. This test will show how much water is available to the apparatus from the hydrant for suppression of the structure.
The average spacing between fire hydrants shall not exceed that listed in Table C105.1. Exception: The fire chief is authorized to accept a defi-ciency of up to 10 percent where existing fire hydrants pro-vide all or a portion of the required fire hydrant service.
