Sprinkler GPM Density
Total gpm from area of operation and density (gpm/ft^2).
Example
You enter
- Area of operation (ft²) 1500
- Hazard category (default if density blank) ordinary_2
You get
- Total gpm 300
- Density gpm per (ft²) 0.2
- Meets hazard minimum Yes
- Hazard minimum density 0.2
Details, formula, and sources
Total demand GPM = density (gpm/ft²) × area_of_operation (ft²) + hose-stream allowance per NFPA 13 §11.2 hydraulic calculations.
NFPA 13 (2022) §11.2 (Hydraulic Calculation Procedures) by name and section.
NFPA 13 read-only at nfpa.org/freeaccess.
Estimate. AHJ and licensed fire protection engineer govern.
Field names used by the API: area_of_operation_ft2, hazard_category, total_gpm, density_gpm_per_ft2, meets_minimum, hazard_minimum_density
- Hose-stream allowance 100 gpm light hazard / 250 gpm ordinary / 500 gpm extra hazardNFPA 13-2022 §11.2 typical