Minn. R. agency 222, ch. 4714, pt. 4714.0702
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].
Minn. R. agency 222, ch. 4714, pt. 4714.0702