Vents on WC's

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Vents on WC's

Author: dazataz (ME)

OK guys, my next little bit of uncertainty.
On the first floor (I didn't have this issue on second floor) I'm planning a WC with a flange, a 45 into a wye (with a CO on the backend) and then downstream a wye with a 2" takeoff for the Vent to a Street el, then running that line parallel along the joist until I get to a Wall that I can pop up throuh.

My question arises in that this horizontal line is technically below the flood rim - how to do this or is it an exception? - I didn't see any clear language again in the IRC or UPC.

Am I supposed to immediatley get through the floor and rise above the bowl before going horizonatal?

Clear as mud, or eh, #2 smiling smiley

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Re: Vents on WC's
Author: x apprentice 22 (MA) In Massachusetts we can t run a vent horizontally below the flood rim level unless the offset is 45 degrees or more. It must be 6 inches above the highest fixtures on that floors flood rim level. Ive seen it done here before. Some exceptions are wet venting and island sinks. Ask your plumbing inspector.
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Re: Vents on WC's
Author: hj (AZ) It is NOT an exception, and you DO have to find a way to go vertical before transitioning to the horizontal 42" above the floor.
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Re: Vents on WC's
Author: North Carolina Plumber (NC) If you can get the vent over to where you can drain a sink into it, then it'll be a wet vent and theres no problem with running horizontal.
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Re: Vents on WC's
Author: m & m (MD) It must be within a 45* to 135* range off horizontal when it is unwashed.
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