Fire Water Storage Calculator

Fire water tank capacity from sprinkler demand and fire flow.

Sprinkler demand (GPM)

Hazard classification

Standpipe demand (GPM)

Additional hose stream (GPM)

Manual duration override (min)

Domestic reserve (gal)

Tab to move between fields

Fire water storage (gal)

30,000

Total tank capacity (gal)

30,000

Total system flow (GPM)500

Supply duration (min)60

Hose stream allowance (GPM)250

Storage volume (cu ft)4,011

Storage volume (liters)113,550

Est. tank diameter (ft)17.2

Est. tank height (ft)17.2

Suction pipe size (in)6

How to Use This Calculator

Enter Sprinkler demand (GPM), Hazard classification, and Standpipe demand (GPM).
Set Additional hose stream (GPM), Manual duration override (min), and Domestic reserve (gal).
Review Fire water storage (gal) and Total tank capacity (gal).
Use Total system flow (GPM) and Supply duration (min) to inform your decision.

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