Drains and Sewers - Capacities vs. Size
Drainage Fixture Units (DFU) connected to building drains and sewers.
Note! - charts are based on clean pipes. Friction coefficients may vary with pipe material.
The Drainage Fixture Unit Values (DFU) are defined by the Uniform Plumbing Code (UPC) and can be used to determine required drainage capacities from fixtures and service systems.
Related Topics
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Sanitary Drainage Systems
The purpose of the sanitary drainage system is to remove effluent discharged from plumbing fixtures and other equipment.
Related Documents
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Cleanouts in Draining Systems
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DFU - Drainage Fixture Units
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Minimum pitch of horizontal drainage pipes. -
Sanitary Drainage Systems - Volume Flow
Calculate expected volume flow load in sanitary drainage systems. -
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Septic systems handles waste from drain systems. -
Sewer Pipes - Capacities vs. Slope
Carrying capacities of sewer and wastewater pipes - gpm and liter per second. -
Trap Sizes vs. Fixture Units
No. of fixture units and required trap size. -
Water Supply Fixture Units - WSFU vs. GPM and Liters/sec
Converting WSFU - Water Supply Fixture Units - to GPM. -
Water Supply Fixture Units WSFU
WSFU is used to calculate water supply service systems.