Illinois Administrative Code
Title 77 - PUBLIC HEALTH
Part 890 - ILLINOIS PLUMBING CODE
Subpart J - DRAINAGE SYSTEM
Section 890.1330 - Drainage Fixture Units (DFUs)
Universal Citation: 77 IL Admin Code ยง 890.1330
Current through Register Vol. 48, No. 12, March 22, 2024
a) Values for Fixtures. Drainage fixture units (DFUs) (see Appendix A.Table E) designate the relative load of different kinds of fixtures that shall be used to calculate the total load carried by a soil or waste pipe, and shall be used with the tables of sizes for soil, waste and drain pipes for which the permissible load is given in terms of DFUs.
b) Values for Continuous Flow. For a continuous or semi-continuous flow into a drainage system, such as from a pump, ejector, air-conditioning equipment or similar devices, two DFUs shall be considered to be equal to each gallon per minute (gpm) of flow.
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