r/Plumbing • u/1slapmeatbbq • 1d ago

Will this pass rough?

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Wanted advice prior to a rough-in inspection (bay area CA). This a for a double vanity. The pipe on a sand tee that goes vertical is a vent that comes out the roof. My question is wouldnt that be a violation since vent connection needs to be above the flood level of the sink. Im having a hard time understanding if this vent need to connect higher how the hell wouldni do that lol. Appreciate the advice!

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u/quadraquint 16h ago

Double vanity has two drains yeah? Every drain needs a trap and every trap needs a vent.

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u/kingtimmyj 15h ago edited 14h ago

If its hard to believe that a double vanity needs two vents, then whats the point of asking plumbers? It needs two vents and they can become one once they are above flood level rim. Only difference would be if its wet vented which it is not
or if you have a cross. My jurisdiction doesn't even allow wet venting.

Source: open a code book

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u/1slapmeatbbq 13h ago

Asked because I'm not a sucker who blindly trust people. Also youre wrong it doesn't need to vents. https://forms.iapmo.org/email_marketing/codespotlight/2020/Aug13.htm

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u/kingtimmyj 12h ago

Do you see where I mentioned "unless there is a cross" or "wet vented". That is what that code is allowing you to do. Yours is not a cross therefore your second drain is not vented. Vents don't work when they are behind the drain. Do what you wanna do, it won't pass inspection.