Fire-flows shall comply with Table 57.507.3.1 for any structures, group of structures or facilities by the type of land development, or as otherwise determined by the Chief.
1. Where street alignments mandate the installation of dead-end mains, the fire-flow in gallons per minute may be adjusted downward, depending on the type of land development.
2. A minimum residual water pressure of 20 pounds per square inch is to remain in the system with the required gallons per minute flowing.
Type of Land Development | Fire-Flow in Gallons Per Minute |
Low Density Residential | 2,000 G.P.M. from three adjacent fire hydrants flowing simultaneously |
High Density Residential and Neighborhood Commercial | 4,000 G.P.M. from four adjacent fire hydrants flowing simultaneously |
Industrial and Commercial | 6,000 to 9,000 G.P.M. from four to six fire hydrants flowing simultaneously |
High Density Industrial and Commercial (Principal Business Districts or Centers) | 12,000 G.P.M. available to any block (where local conditions indicate that consideration must be given to simultaneous fires, and additional 2,000 to 8,000 G.P.M. will be required). |