MEP Plumbing Calculators
Water supply, hot water and sanitary provision across a building.
Plumbing & Fire Live Tool
Plumbing Demand & Stormwater Calculator
Demand-based water sizing: storage volume from per-capita demand, booster pump set, hot water demand, and external stormwater flow and outfall size.
Storage = Population × Demand × Drawdown Hours (floored at a minimum); Stormwater = Contributing Area × Rainfall Intensity; Outfall rounded up to a standard diameter