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    Dave Roussel's Avatar
    Dave Roussel Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jun 24, 2009, 08:03 AM
    Drain Pipe
    How far can a drainpipe go before it reaches the vent stack ?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Jun 24, 2009, 12:36 PM
    A 1 1/2"drain line can go 3 1/2'.
    A 2" " " " " 5'
    A 3" " " " " 6'
    A 4" " 6'
    A 4" " " 10

    UPC measured from the weir of the trap to the vent opening.
    Other codes can very but UPC's about average. Cheers, Tom
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