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Thread: Basment shower drain

  1. #1

    Default Basment shower drain

    Had the plumbing roughed in when house was built and finally thinking about finishing basement. The shower drain is cast and below grade. I need to move it about 2 feet over. Looks like the have a donut fitting going from main4 inches to 3 inch bell. Ptrap is under slab since it holds water. Can I remove the cast fitting and put fernco donut in to change to pvc? If so do they sell 4 to 2 pvc reducer? Do I need to move ptrap to be directly under shower drain? Let me know your thoughts I have attached 2 pics. The drain and the other is the vanity drain which the plumber leaded the pvc to cast.
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  2. #2
    In the Trades kordts's Avatar
    Join Date
    Oct 2005
    exurban Chicago


    Your code might not allow pvc under grade. The trap needs to be directly under the drain.


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