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-   -   Macerator waste (https://www.askmehelpdesk.com/showthread.php?t=405414)

  • Oct 12, 2009, 11:44 PM
    silverback1951
    Macerator waste
    I need to run the waste for my macerator between ceiling and floor. This requires the drilling thru' of joists. How can this be achieved safely.
  • Oct 13, 2009, 05:10 AM
    speedball1
    What size floor joists are we talking about and what size is the discharge line? Tom
  • Oct 13, 2009, 08:04 AM
    silverback1951

    Floor joists are six by two and the discharge pipe is 32mm
  • Oct 13, 2009, 08:23 AM
    ballengerb1

    Is the ceiling open or closed? You will also need to make each hole slightly lower than the previous hole so you maintain a 1/4" pitch
  • Oct 13, 2009, 08:49 AM
    silverback1951

    Closed ceiling
  • Oct 13, 2009, 10:40 AM
    ballengerb1

    You will need to open the ceiling or the floor, no 2 ways about it. Cutting the holes correctly is only the first trick, installing several sections of PVC glued together one at a time is the next task.
  • Oct 13, 2009, 11:11 AM
    Milo Dolezal

    I agree with Ballangerb1. Also, do not notch the joist - drill them. You will have to measure with precision so you don't kill the slope. With 5 1/2" of joist and 1 1/4" pipe - do don't have too much room for error.

    How far is this pipe going in that ceiling ?

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