Minnesota Administrative Rules
Agency 222 - Plumbing Board
Chapter 4714 - PLUMBING CODE
Part 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 |
Assembly2 |
|
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 |
- |
- |
- |
- |
|
Bar2 |
1-1/2 |
1.0 |
- |
- |
|
Bar |
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) miniraura 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].
