Minnesota Administrative Rules
4714.0702 FIXTURE UNIT EQUIVALENTS.
UPC section 702, Table 702.1, is amended to read as follows:
| TABLE 702.1 | |||||
| Drainage Fixture Unit Values (DFU) | |||||
| Plumbing Appliances, Appurtenances, or Fixtures | Minimum Size Trap and Trap Arm6 (inches) |
Private | Public | Assembly7 | |
| Bathtub or Combination Bath/Shower | 1-1/2 | 2.0 | 2.0 | -- | |
| Bidet | 1-1/4 | 1.0 | -- | -- | |
| Bidet | 1-1/2 | 2.0 | -- | -- | |
| Clothes Washer, Domestic, Standpipe5 | 2 | 3.0 | 3.0 | 3.0 | |
| Dental Unit, Cuspidor | 1-1/4 | -- | 1.0 | 1.0 | |
| Dishwasher, Domestic, with Independent Drain2 | 1-1/2 | 2.0 | 2.0 | 2.0 | |
| Drinking Fountain or Water Cooler | 1-1/4 | 0.5 | 0.5 | 1.0 | |
| Food Waste Grinder, Commercial | 2 | -- | 3.0 | 3.0 | |
| Floor Drain, Emergency | 2 | -- | 0.0 | 0.0 | |
| Floor Drain (for Additional Sizes see section 702.0) | 2 | 2.0 | 2.0 | 2.0 | |
| Shower, Single-Head Trap | 2 | 2.0 | 2.0 | 2.0 | |
| Shower, Multi-Head, Each Additional | 2 | 1.0 | 1.0 | 1.0 | |
| Lavatory, Single | 1-1/4 | 1.0 | 1.0 | 1.0 | |
| Lavatory, in Sets of Two or Three | 1-1/2 | 2.0 | 2.0 | 2.0 | |
| Washfountain | 1-1/2 | -- | 2.0 | 2.0 | |
| Washfountain | 2 | -- | 3.0 | 3.0 | |
| Mobile Home, Trap | 3 | 12.0 | -- | -- | |
| Receptor, Indirect Waste1,3 | 1-1/2 | See footnote1,3 | |||
| Receptor, Indirect Waste1,4 | 2 | See footnote1,4 | |||
| Receptor, Indirect Waste1 | 3 | See footnote1 | |||
| Sinks | -- | -- | -- | -- | |
| Bar | 1-1/2 | 1.0 | -- | -- | |
| Bar2 | 1-1/2 | -- | 2.0 | 2.0 | |
| Clinical | 3 | -- | 6.0 | 6.0 | |
| Commercial With Food Waste2 | 1-1/2 | -- | 3.0 | 3.0 | |
| Commercial Pot or Scullery | 2 | -- | 4.0 | 4.0 | |
| Special Purpose2 | 1-1/2 | 2.0 | 3.0 | 3.0 | |
| Special Purpose | 2 | 3.0 | 4.0 | 4.0 | |
| Special Purpose | 3 | -- | 6.0 | 6.0 | |
| Kitchen, Domestic2 (with or without food waste grinder, dishwasher, or both) | 1-1/2 | 2.0 | 2.0 | -- | |
| Laundry2 (with or without discharge from a clothes washer) | 1-1/2 | 2.0 | 2.0 | 2.0 | |
| Service or Mop Basin | 2 | -- | 3.0 | 3.0 | |
| Service or Mop Basin | 3 | -- | 3.0 | 3.0 | |
| Service, Flushing Rim | 3 | -- | 6.0 | 6.0 | |
| Wash, Each Set of Faucets | -- | -- | 2.0 | 2.0 | |
| Urinal, Integral Trap 1.0 GPF2 | 2 | 2.0 | 2.0 | 5.0 | |
| Urinal, Integral Trap Greater Than 1.0 GPF | 2 | 2.0 | 2.0 | 6.0 | |
| Urinal, Exposed Trap2 | 1-1/2 | 2.0 | 2.0 | 5.0 | |
| Water Closet, 1.6 GPF Gravity Tank | 3 | 3.0 | 4.0 | 6.0 | |
| Water Closet, 1.6 GPF Flushometer Tank | 3 | 3.0 | 4.0 | 6.0 | |
| Water Closet, 1.6 GPF Flushometer Valve | 3 | 3.0 | 4.0 | 6.0 | |
| Water Closet, Greater Than 1.6 GPF Gravity Tank6 | 3 | 4.0 | 6.0 | 8.0 | |
| Water Closet, Greater Than 1.6 GPF Flushometer Valve | 3 | 4.0 | 6.0 | 8.0 | |
For SI units: 1 inch = 25 mm
Notes:
1 Indirect waste receptors shall be sized based on the total drainage capacity of the fixtures that drain therein to, in accordance with UPC Table 702.2(b).
2 Provide a 2-inch (50 mm) minimum drain.
3 For refrigerators, coffee urns, water stations, and similar low demands.
4 For commercial sinks, dishwashers, and similar moderate or heavy demands.
5 Buildings having a clothes-washing area with clothes washers in a battery of three or more clothes washers shall be rated at 6-fixture units each for purposes of sizing common horizontal and vertical drainage piping.
6 Trap sizes shall not be increased to the point where the fixture discharge is capable of being inadequate to maintain their self-scouring properties.
7 Assembly [See Minnesota Rules, chapter 1305, International Building Code].
History:
40 SR 71
Published Electronically:
January 25, 2016
Official Publication of the State of Minnesota
Revisor of Statutes