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    tmcnutt's Avatar
    tmcnutt Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jan 22, 2008, 10:33 AM
    Drain/vent for bathroom sink and tub.
    I have an older bathroom that I am redoing and the sink drain went through the floor with an "S" trap, which I understand is not allowed with new construction. Is there a way to go through the floor and have a legal trap or should I go with a "P" trap and put the drain in the wall? I have already removed the plaster and the studs are exposed. The main question that I have is can I have the sink drain run approximately 2 1/2' feet and then go down and tie into the tub drain? The point where the line turns down will also go up as a vent. Please see the attached representation. The sink drain will be 1 1/2" and the tub drain will be 2". Is the vent considered a wet vent? The drawings that I have seen show the vent going up above the drain line. Can I share the drain line as a vent?

    Thanks,
    Tom
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    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Jan 22, 2008, 10:42 AM
    Yes, you have the tub wet vented by the lavatory roof vent. Good luck, Tom
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