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// CODE SNIPPET

P3105.1 Distance of Trap From Vent

Residential Code 2018 of Kansas > 31 Vents > P3105 Fixture Vents > P3105.1 Distance of Trap From Vent

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Each fixture trap shall have a protecting vent located so that the slope and the developed length in the fixture drain from the trap weir to the vent fitting are within the limits indicated in Table P3105.1.

Exception: The developed length of the fixture drain from the trap weir to the vent fitting for self-siphoning fixtures, such as water closets, shall not be limited.

MAXIMUM DISTANCE OF FIXTURE TRAP FROM VENT

SIZE OF TRAP (inches)	SLOPE (inch per foot)	DISTANCE FROM TRAP (feet)
1¹/₄	¹/₄	5
1¹/₂	¹/₄	6
2	¹/₄	8
3	¹/₈	12
4	¹/₈	16

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm,

1 inch per foot = 83.3 mm/m.

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