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    Adidas13's Avatar
    Adidas13 Posts: 6, Reputation: 1
    New Member
    		  
    #1

    Jan 1, 2006, 12:52 PM
    Bathroom in basement
    Hi, I'm remodeling my basement, and installing a bathroom (sink and Toilet).This involves busting up the floor, which shouldn't be too bad since I will be tapping in to an existing pipe next to a main stack, within 6 feet or so of where the bathroom will be. Do I have to vent this separately? Or will that stack act as a vent?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Jan 1, 2006, 01:27 PM
    " Do I have to vent this separately? or will that stack act as a vent?"
    Yes and no! Yes, you'll have to vent off the lavatory and no you may not use the soil stack as a vent. It's against code and good pumbing practice.
    But there is a bright spot. Instead of running the vent all the way to the roof you may use a AAV (Air Admittance Valve) "cheater vent" off the lavatory. Connect the lavatory drain to the toilet drain so the toilet will be wet vented. Good luck, Tom
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