Water Demand Calculator
Estimate daily demand, peak demand, diversity effect, and storage requirement.
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Plumbing & Drainage Tools
Domestic water, drainage, pump head, tank, and hot-water planning tools.
Pump Head Calculator
Calculate static head, pressure head, friction loss, velocity, and total dynamic head.
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Drainage Pipe Sizing Assistant
Estimate drainage fixture units, pipe size guidance, and slope warning.
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Water Tank Capacity Planner
Calculate domestic tank volume, fire reserve separation, usable volume, and refill rate.
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Hot Water Demand Calculator
Estimate hot water storage, heating energy, recovery rate, and heater capacity.
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Water Pipe Pressure Drop Calculator
Estimate water pipe velocity, friction head, and pressure drop.
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Drainage Slope Calculator
Calculate pipe fall, slope percentage, and invert level difference.
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Pump Horsepower Calculator
Estimate pump power from flow, total dynamic head, efficiency, and motor margin.
Open ToolAbout these Plumbing & Drainage tools
Use these tools for practical planning, checking, and early-stage engineering support. Each tool includes sample data, calculation results, interpretation, warnings, assumptions, confidence notes, and branded print output.
How to use this page
Plumbing and drainage tools support water demand, tank capacity, pump head, drainage pipe sizing, and hot water estimates. They are useful for concept checks, tender review, and coordination between architecture, structure, and MEP systems. Final sizing should follow local plumbing codes, fixture schedules, diversity rules, and approved materials.