Sprinkler GPM Density

Total gpm from area of operation and density (gpm/ft^2).

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Formula and source

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.

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Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.