Plumbing · IPC 2021 §1002.1 / §1002.4
Trap Seal Depth and Weir Dimensions
Fixture trap in elevation: weir no more than 24 in below the fixture outlet, no more than 30 in horizontally to the trap inlet, and a liquid seal of 2 in minimum to 4 in maximum.. Referenced to IPC 2021 §1002.1 / §1002.4.
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