Fire Department Connection Calculator

FDC requirements from system type and demand.

System type served

Sprinkler demand (GPM)

Standpipe demand (GPM)

Building height (ft)

Distance to hydrant (ft)

FDC style

Tab to move between fields

Total FDC flow (GPM)

500

FDC connections needed

Inlet connections2

Required FD inlet pressure (PSI)136.7

Elevation pressure (PSI)21.7

FD pumper capacity OKYes

Hydrant distance OKYes

Check valve requiredYes

Signage typeAUTO SPKR & STANDPIPE

4" Storz sufficientYes

Recommended Connection Desc2 × 2.5" Siamese or 1 × 4" Storz

Drain Valve RequiredYes

How to Use This Calculator

Enter System type served, Sprinkler demand (GPM), and Standpipe demand (GPM).
Set Building height (ft), Distance to hydrant (ft), and FDC style.
Review Total FDC flow (GPM) and FDC connections needed.
Use Inlet connections and Required FD inlet pressure (PSI) to inform your decision.

Ad Placeholder