Fixture Unit Table
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Type of Fixture or Group of Fixtures
Based on the 2000 International Plumbing Code
Fixture Units
Automatic (commercial) clothes washer (2" standpipe) 3
Automatic (residential) clothes washer 2
Bathroom group consisting of water closet, lavatory, bathtub or shower, including or excluding a bidet, an emergency floor drain, or both. (1.6 gpf water closet) 5
Bathroom group consisting of water closet, lavatory, bathtub or shower, including or excluding a bidet, an emergency floor drain, or both. (greater than 1.6 gpf water closet) 6
Bathtub (with or without overhead shower) 2
Bidet 1
Combination sink-and-tray 2
Dental unit or cuspidor 1
Dental lavatory 1
Drinking fountain 1/2
Dishwasher, domestic 2
Floor drains with 2" waste 2
Kitchen sink, domestic, with one 1½" waste 2
Kitchen sink, domestic, with food waste grinder and/or dishwasher 2
Lavatory with 1¼" waste 1
Laundry tray (1 or 2 compartments) 2
Shower stall 2
Sinks 2
Urinal 4
Urinal, 1 gallon per flush or less 2
Wash Sink (circular or multiple) each set of faucets 2
Water closet, flushometer tank, public or private 4
Water closet, private (1.6 gpf) 3
Water closet, private (flushing greater than 1.6 gpf) 4
Water closet, public (1.6 gpf) 4
Water closet, public (flushing greater than 1.6 gpf) 6
Fixture drain or trap size (inches):
      1 1/4
      1 1/2
      2
      2 1/2
      3
      4
1
2
3
4
5
6




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