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Size of Fixture Drains (Inches)
Maximum Allowed Distance from Trap to Vent
2 ft. 6 in.
3 ft. 6 in.
4 ft. 0 in.
5 ft. 0 in.
4 and larger
6 ft. 0 in.

Related Code Sections

Section 890.1470 Vents and Venting, Fixture Trap Vents
Distance of Trap From Vent. Each fixture trap shall have a protecting vent located so that the developed length in the fixture drain from the trap ...
L Illustrations for Subpart K, Distance From Trap to Vent
(Referenced in Section 890.1470(a)) (Source: Amended at 38 Ill. Reg. 9940, effective April 24, 2014 ...
Section 890.410 Traps and Cleanouts, Fixture Traps/Continuous Waste
to Fixture. The developed length from the fixture outlet to the trap weir shall not exceed 24 inches, except that an interceptor used as a trap shall ...