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Kentucky Administrative Regulations (Last Updated: August 1, 2016) |
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TITLE 815. PUBLIC PROTECTION CABINET - DEPARTMENT OF HOUSING, BUILDINGS AND CONSTRUCTION |
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Chapter 20. Plumbing |
815 KAR 20:080. Waste pipe size
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Section 1. The minimum size (nominal inside diameter) of traps, soil or waste branches for a given fixture shall not be less than that given in the following table:
Minimum Size (in inches)
Trap
Branch
Fixture Unit
Automatic clothes washer
2
2
2
Basement floor drain
3
3
3
Bath: sitz
1 1/2
1 1/2
2
Bathtub
1 1/2
1 1/2
1 1/2
Combination fixture
2
2
2
Dental cuspidor
2
2
2
Dishwashers
1 1/2 up
1 1/2 up
1 1/2 up
Disposal Unit
1 1/2
1 1/2
1 1/2
Drinking Fountain
1 1/4
1 1/4
1
Floor drain in toilet room
3
3
3
Floor drain in utility room
3
3
3
Industrial floor drain
4
4
4
Kitchen sink unit
1 1/2 up
1 1/2 up
1 1/2 up
Laundry tray
1 1/2
1 1/2
1 1/2
Lavatories
1 1/4
1 1/4
1
Santistand
3
4
6
Shower Stall
1 1/2
1 1/2
1 1/2
Sinks: bar or soda fountain
1 1/2
1 1/2
1 1/2
Sinks: Barium
2
2
2
Sinks: Chemical
1 1/2 up
1 1/2 up
1 1/2 up
Sink: Clinic
3
4
6
Sinks: Kitchen, residence
1 1/2
1 1/2
1 1/2
Sink: Plaster
2
2
2
Sink: Service
3
3
3
Sink: Service wall type
2
2
2
Sink: three compartment
2
2
2
Urinal: lip
1 1/2
1 1/2
1 1/2
Urinal: pedestal
3
3
3
Urinal: stall
2 up
2 up
2 up
Urinal: trough
1 1/2
1 1/2
1 1/2
Water closet
3
3 or 4
6
(Recodified from 401 KAR 1:050, 7-5-78; Am. 9 Ky.R. 47; eff. 8-11-82; TAm eff. 8-9-2007.)
Notation
RELATES TO: KRS Chapter 318
STATUTORY AUTHORITY: KRS 318.130
NECESSITY, FUNCTION, AND CONFORMITY: The office is directed by KRS 318.130 through the State Plumbing Code Committee to adopt and put into effect a State Plumbing Code. This administrative regulation relates to the sizes of waste piping that are needed to serve various types of plumbing fixtures and appurtenances.