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// CODE SNIPPET

P3113.1 Size of Vents

Residential Code 2018 of Kansas > 31 Vents > P3113 Vent Pipe Sizing > P3113.1 Size of Vents

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The required diameter of individual vents, branch vents, circuit vents, vent stacks and stack vents shall be not less than one-half the required diameter of the drain served. The required size of the drain shall be determined in accordance with Chapter 30. Vent pipes shall be not less than 1¹/₄ inches (32 mm) in diameter. Vents exceeding 40 feet (12 192 mm) in developed length shall be increased by one nominal pipe size for the entire developed length of the vent pipe.

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