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Thread: What is this?

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  1. #1
    DIY'er carrud's Avatar
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    Default What is this?

    House in So. California, built around 1965. Doing a master bath remodel. Did demo of the stall shower and found this in the plumbing wall. I'm sure this is vent pipes, but I don't know why the cleanout opening (if that's what it is called?) that was in the wall.

    What is this for? I will be replacing the shower drain and trap, and if I were to replace this pictured area (not sure yet) with ABS what is best to do here?

    NOTE: I definitely need to do something about this area because that cleanout piece sticks proud of the wall stud. It didn't bother the previous fiberglass shower but bothers me now with where I'm headed.

    Many Thanks, Clark

    (PS, sent here by the great folks at the John Bridge Forum)

    Name:  2013-07-04 Master Bath Vent Pipe 1.jpg
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Size:  70.0 KBName:  2013-07-04 Master Bath Vent Pipe 2.jpg
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Size:  57.4 KB
    -Clark

  2. #2
    Test, Don't Guess! cacher_chick's Avatar
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    Default

    Most of us would call it "using what we have in the truck". The same thing could be accomplished with a vent bent, minus the cleanout.

  3. #3
    Retired Defense Industry Engineer jadnashua's Avatar
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    It's probably what they call a revent. IF that's the case, it's a little low - code today wants it 42" above the floor or 6" above the highest flood plane that vent serves, whichever is higher. They may have used the T because they didn't have an elbow. At that point, the vent shouldn't need to be snaked.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  4. #4
    Plumbing Contractor for 49 years johnjh2o1's Avatar
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    6" above the flood rim of the fixture it's serving is correct. Seeing as they're nothing connected to it above the floor I would say it's serving a tub or shower. In which case it would be 6" above the flood rim and perfectly legal.

    John

  5. #5
    Moderator & Master Plumber hj's Avatar
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    quote; In which case it would be 6" above the flood rim and perfectly legal.
    The code reads 6" above the floor rim OR 42" above the floor, whichever is HIGHER, so it is NOT "perfectly legal".
    Licensed residential and commercial plumber

  6. #6
    DIY'er carrud's Avatar
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    Based on the info provided above I traced these drains. I see the one on the left goes down to the first floor sink and vents to the roof. The one on the right is for this second floor shower connection only and vents to the left side pipe. So it seems this would in it's present form be legit from the 6"/42" standpoint. ??

    Sorry I did not provide the info about this being on the 2nd floor, which perhaps may have been good info for your replies.


    Many Thanks, Clark

    Many Thanks, Clark
    -Clark

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