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Drains and Sewers

Drainage Fixture Units (DFU) connected to building drains and sewers

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Drains and sewers - capacity vs. slope and fixture units

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.

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  • en: building drains sewers fixture units slope
  • es: construcción de desagües alcantarillas unidades fixture pendiente
  • de: Gebäude Kanalisation Kanalisation Befestigung Einheiten Hang
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