Sewer cleanout outside house is 8 inches too tall

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by bingo, May 31, 2007.

  1. bingo

    bingo New Member

    Messages:
    10
    Hi all

    The cast iron sewer cleanout for my house is in a bad spot to be sticking up so high. It is about 10 feet outside my foundation wall and appears to be a 3" pipe sticking vertically out of the ground. But the pipe has a fitting that enlarges to a 4" at the end (just before where the cleanout plug is)

    So I'd like to dig into the soil around the pipe, cut it off below the grade and put on a new plug - then put a "valve box" (the plastic jobbies usually seen around sprinkler valves?) over top of it.

    I've never done any outdoor plumbing and I'm not sure if I'm overlooking something. Would I just put a rubber adapter (like a Fernco or Mission boot) over the cut end and then put on an ABS cleanout and plug?

    I actually have installed and replaced a lot of DWV inside of houses, but I don't have even a beginner's understanding of where this sewer cleanout leads to and what I should be considering as far as future access. I've never seen a diagram of where the waste pipe goes after it enters the basement floor!

    thanks,

    bingo

    steve
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,537
    Location:
    Cave Creek, Arizona
    Co

    Cut it off, glue on a female adapter, then screw a plug into the adapter.
  3. bingo

    bingo New Member

    Messages:
    10
    PS It's cast iron...

    Hi HJ

    So you think the valve box isn't a good idea? I'm afraid of people not knowing where this cleanout is in the future...

    you say "...glue on a female adapter"> I guess I should have been more clear: it is a 1920s house and the sewer cleanout is cast iron. That's why I was thinking a Fernco was necessary. What material of adapter should I use to be code? And is there any reason to attempt to make the pipe 4" at the plug (like it was before) or should I just use 3"?

    Thanks again!

    Bingo
  4. bingo

    bingo New Member

    Messages:
    10
    HJ and all - trying to get a response

    Hi
    I don't mean to press but it has been a week and I didn't hear back from HJ or another plumbing expert. Can someone read my original post and my follow-up and help me sort things out? I'm doing this tomorrow!

    thanks
  5. Gary Swart

    Gary Swart In the Trades

    Messages:
    7,341
    Location:
    Yakima WA
    Your plan will work fine. Use a Fernco that will go from CI to either PVC or ABS, your choice. Stay with the 3", I see no reason to have a 4" hole immediately reduced to 3". A female adapter will allow you to use a screw-in plug. The irrigation box is a good idea. One alternate plan might be to figure how to hid the existing clean out with some shrubs and just leave it as is.
  6. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,537
    Location:
    Cave Creek, Arizona
    Co

    A female cleanout ferrule and a No-Hub coupling is all you need, once the pipe is cut off. I forgot, or missed, the cast iron part in my original answer because cast iron cleanouts are becoming very rare.
  7. bingo

    bingo New Member

    Messages:
    10
    thanks!

    Will do and report back any weirdness...
    sr
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