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I know that the height will vary based on how high the sink is mounted and how deep it is, but I'm trying to figure out how long of a run I can make for my sink.

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1 Answer 1

The trap is usually attached to the end of the tailpiece, and tailpieces are typically between 6 - 8 inches long (though I've seen up to 12). So the "standard" height of a trap would be, 6 - 8" below the fixture.

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So if I have a "standard" base cabinet that's 34 1/2" (?) and I get an average bar sink with a depth of ~ 8" and a 2" drain pipe, about how high would the trap weir be? (34.5 - 8 - 8 - ?) –  2 Left Thumbs Aug 8 '13 at 13:25

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