Standpipe/trap in wall with laundry outlet box

Discussion in 'General Plumbing Help' started by edee_em, Jun 13, 2019.

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  1. Jun 13, 2019 #1

    edee_em

    edee_em

    edee_em

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    I currently have a standpipe for my washer installed outside of the drywall, right behind my washer near the washer drain outlet. There is a trap installed at the bottom of the standpipe and it connects to a vented drain a few feet away. Has been working great for the past 19 years+.

    The issue I have is that the supplies I installed are very low. That didn't matter 19 years ago, but it seems, as I age, the floor is getting lower and further away;). So, the plan is to install an outlet box to raise the shutoffs to a more humane height.

    Now this brings me to the question I have: these outlet boxes all have a place for the drain to be installed but that means the standpipe and trap would now be in the wall behind drywall. What are the issues with this and specifically with cleanouts. I want to make sure it's done to code (I live in Ontario, Canada by the way). My thinking is if a blockage occurred, (doing counter hex sounds and dance right now) it should be an easy matter of running a snake down the drain pipe. Or am I way off on how to deal with cleanouts for standpipes buried in walls because of laundry outlet boxes? Thanks

    PS: In all the videos I've viewed it seems there are more installations of these things without any cleanouts compared to those showing a cleanout.
     
  2. Jun 13, 2019 #2

    frodo

    frodo

    frodo

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    install a cleanout on the vent,,install it above the level of the washing machine
    the reason is, if the drain backs up while your washe has a full load, you do not break your back moving the washer out of the way of the cleanout.

    the valve/washer box,, there is no code that states that box was to be in the wall
    mount the box on the drain stand pipe, and screw it to the wall
    hook up the water to the valves in the box
    image 1 is what i think you have
    image 2 is a cleanout installed in the vent
    and a box on the drain,,,

    those boxes are kinda pricey,,you do not have to have a box,,

    2.jpg
     
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  3. Jun 13, 2019 #3

    Diehard

    Diehard

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    In other words, no reason to move the existing standpipe.
    Do what you want with the water supplies. You can raise them with or without a box. :)
     
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  4. Jun 14, 2019 at 3:35 PM #4

    edee_em

    edee_em

    edee_em

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    Yes, understood, but what if I want to bury the standpipe and trap? How is it dealt with properly?
     
  5. Jun 14, 2019 at 3:50 PM #5

    frodo

    frodo

    frodo

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    if you post a picture it would be easier to tell you
    a p trap swings where it connects to the 90

    cut the old trap off, install a new trap, swing i into the wall

    i am assuming the vent is out of the wall also
     
  6. Jun 14, 2019 at 3:58 PM #6

    edee_em

    edee_em

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    P1010039.JPG
    This is a pic of the laundry room wall rough in circa 2000. The washer and dryer are stacked on the left side of the wall. The standpipe is attached to the drain stub in 2nd bay and that goes on to the drain in the 5th bay. It is not behind the drywall. There is cleanout plug at the bottom of the trap. The vent in the pic was not connected at the time of the pic but it is. The vent and drain are actually behind drywall. The blocking was installed for a laundry tub and cabinet set up that never materialized.
     
  7. Jun 14, 2019 at 5:21 PM #7

    Diehard

    Diehard

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    Your standpipe trap is not being vented properly.
    I can't wait to hear what frodo is going to say about that trap arm extension connection to the vertical vent/drain line. A plumber didn't do that.
    Also, it almost looks like that horizontal vent pipe is sloping the wrong way.
     
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  8. Jun 14, 2019 at 6:59 PM #8

    edee_em

    edee_em

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    Thanks for pointing out what is wrong but an explanation would help. I'm especially concerned with the trap not being vented properly. Also concerned with building permit pass when basement was completed.

    I think the slop you see is because the vent wasn't connected at that point. "Plumber" must have corrected slope when attaching vent
     
  9. Jun 14, 2019 at 8:36 PM #9

    Diehard

    Diehard

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    frodo is a very experienced plumber. Whereas I was a plumbing engineer that didn't necessarily get involved with all the small detail stuff. We let the plumbers and code dictate. So he would be best to help you out.
     
  10. Jun 14, 2019 at 8:54 PM #10

    frodo

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  11. Jun 14, 2019 at 11:54 PM #11

    edee_em

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    Thank you mr. frodo!
     
  12. Jun 20, 2019 at 4:18 PM #12

    edee_em

    edee_em

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    frodo, in your first post you mentioned putting the cleanout above the level of the washing machine. In your last post you show the cleanout quite low. Is there a reason for the change?
     

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