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

    Jan 5, 2008, 05:24 PM
    Installing new washer drain,old slab
    I am moving my washer from one wall to another in my utility room. We are on a concrete slab and there is a 4 " sewer line just outside the new location wall that goes through my yard and ties into my main line. I plan to bust through my foundation and tie into this line installing a new service inside my wall. My concerns are how to vent this line and where to install a P trap. All help and comments are appreciatd!

    Ken
    doug238's Avatar
    doug238 Posts: 1,560, Reputation: 62
    Ultra Member
    		  
    #2

    Jan 12, 2008, 07:12 AM
    Use a 4 by 3 fitting and a 3 inch trap. You will not have to vent it. You can still use a 2 inch riser.
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