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    Larry J's Avatar
    Larry J Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 15, 2014, 01:37 PM
    Washing machine drain lines
    What size ABS pipe is required for a washing machine drain, which will also serve as a drain for an adjacent washtub?
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
    Home Improvement & Construction Expert
    		  
    #2

    Nov 15, 2014, 02:11 PM
    Washer stand pipe = 1 1/2"
    Two inches would be better.
    Milo Dolezal's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
    Plumbing Expert
    		  
    #3

    Nov 15, 2014, 02:34 PM
    In my area, Code requires 2" drain for washing machine and 1 1/2" drain for service sink ( wash tub ). They can be combined into one drain which will have to be 2" at the point of connection.

    Besides the drain, Code calls for 2" P-trap and 2" stand pipe (30" tall ) for washing machine plumbing. With today's high output washers, smaller diameter pipes will most-likely be inadequate and will overflow.

    Hope that helps

    Milo
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #4

    Nov 15, 2014, 03:01 PM
    They don't allow ABS in new construction in GA anymore. Do you have ABS piping?
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