Plumbing

Plumbing calculators for pipe sizing, drainage fixture units, water heaters, septic tanks, sump pumps, and gas pipe sizing.

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Size water supply piping based on fixture units, building height, available pressure, and pipe run length.

Calculate total drainage fixture units and determine required drain, vent, and stack pipe sizes per plumbing code.

Calculate water heater recovery rate, first hour rating, time to full recovery, and standby heat loss.

Size septic tanks and drain fields based on bedrooms, occupants, soil percolation rate, and daily wastewater flow.

Size sump pumps based on pit dimensions, water inflow rate, discharge height, and calculate battery backup duration.

Determine the correct backflow prevention device type, size, pressure loss, and estimated installation cost based on hazard level.

Size natural gas piping using the longest run method with Weymouth formula per IFGC standards.

Size thermal expansion tanks for hot water systems based on system volume, temperature range, and pressure settings.

Size a water softener based on water hardness, iron content, household usage, and regeneration frequency.

Size grease interceptors for commercial kitchens based on fixture flow rates, retention time, and load factors per PDI standards.