P3105.4 Vertical Leg for Waste Fixture Drains

A vertical leg (see Figure P3105.4) is permitted within a fixture drain of a waste fixture in accordance with the following criteria:

1. Minimum trap diameter shall be in accordance with Table P3201.7 of the code.
2. The diameter of section A shall be equal to the diameter of the trap.
3. The length of Section A shall not be less than 8 inches (2032 mm) and in accordance with Table P3105.1 of the code.
4. The diameter of Section B shall be 1 pipe size larger than the diameter of Section A.
5. The length of Section B shall not be more than 36 inches (9144 mm).
6. The diameter of section C shall be 1 pipe size larger than the diameter of Section B.
7. The total length of Section A and Section C shall not exceed the distance allowed in Table P3105.1 of the code.
8. Bends shall be the diameter of the largest connected section.

R 408.30534

R 408.30534