Worked examples for water demand, pump head, NPSH, pressure drop, tanks, hot water, drainage size, and slope checks.
Sample inputs: occupants: 180; litersPerson: 135; fixturePeak: 420; diversity: 45; storageHours: 24
Plan around 24.30 m³/day daily demand and 189.00 L/min diversified peak flow.
Run calculatorSample inputs: staticHead: 22; pressure: 2.5; flow: 18; pipeDiameter: 65; pipeLength: 85; fittings: 25
Select a pump around 18.00 m³/h at 57.64 m TDH, then verify against pump curves.
Run calculatorSample inputs: wc: 12; basins: 18; sinks: 4; floorDrains: 10; pipeDiameter: 110; slope: 1
The selected pipe diameter is acceptable for preliminary fixture-unit planning.
Run calculatorSample inputs: dailyDemand: 32; reserveDays: 1.5; fireReserve: 60; usable: 90; refillHours: 8; codeProfile: gcc
Provide approximately 120.00 m³ gross tank capacity for the entered domestic and fire reserve assumptions.
Run calculatorSample inputs: occupants: 80; litersUser: 18; fixtureAllowance: 350; tempRise: 35; storageFactor: 70; recoveryHours: 2
Plan around 1,253.00 L storage and 25.50 kW heater recovery for the entered demand profile.
Run calculatorSample inputs: flow: 12; diameter: 65; length: 80; fittings: 25; maxVelocity: 2; codeProfile: gcc
Velocity is within the entered 2.00 m/s target.
Run calculatorSample inputs: length: 18; slope: 1.5; startInvert: 100.25; minSlope: 1; codeProfile: gcc
Over 18.00 m, a 1.50 % slope gives 270 mm fall.
Run calculatorSample inputs: flow: 25; head: 45; efficiency: 68; motorMargin: 15
Plan around 5.18 kW motor power, or 6.95 HP, before pump-curve selection.
Run calculatorSample inputs: atmosphericBar: 1.013; suctionHead: 2.5; vaporPressureBar: 0.023; suctionLoss: 0.8; npshr: 3.1; margin: 1
NPSH margin meets the entered planning requirement.
Run calculator