Washing Machine drain-vent delima

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by carltie, Aug 28, 2013.

  1. carltie

    carltie New Member

    Messages:
    4
    Location:
    Boston
    Hello,

    Re-positioning my washing machine . The picture below indicates the new high efficiency washing machine setup. I am using 2" pipe for the drain but I am not sure how to connect it to the main drain as the connection are very closely coupled with bends. I am also wondering if I need to have a vent and if so how to make the connection. Would AAV work for washing machine ? I live in Massachusetts so not sure if the code allows.

    CheckSetting.jpg

    Any help would be appreciated.
    Thanks!
  2. Gary Swart

    Gary Swart In the Trades

    Messages:
    7,298
    Location:
    Yakima WA
    Your real problem is that Massachusetts do not allow DIY plumbing. Briefly on your questions: No AAV for washers, washer must drain into an open standpipe that is trapped and vented. Your diagram indicates an unvented trap with a standpipe that is too short. It appears you have a vent available, but I'm pretty sure the connection the the main drain will have to be lower. Again, DIY is illegal in MA, you need to hire a plumber.
  3. cacher_chick

    cacher_chick Test, Don't Guess!

    Messages:
    3,236
    Location:
    Land of Cheese
    It looks like you have plenty of hack work there already if the washer and kitchen sink are piped with 1-1/2" pipe. You cannot legally plumb there, and you have some re-work to be done. Assuming the fixture vents are installed correctly, 2" sink and washer drains should tie directly into the 3" line.
  4. carltie

    carltie New Member

    Messages:
    4
    Location:
    Boston
    You can say that again - hack work indeed! Just bought the house and realized my delima. Previous owner cut a lot of corners. Not sure what you mean "cannot legally plumb there" Is there no way this job can be done? What about this setup below. Is the vent legal?

    CheckSetting2.jpg
    Last edited: Aug 28, 2013
  5. cacher_chick

    cacher_chick Test, Don't Guess!

    Messages:
    3,236
    Location:
    Land of Cheese
    What Gary was eluding to was that where you live, it is against state law to perform plumbing without a license.

    The vent must be vertical, and the vent take-off must be located at or prior to the point which the drain line turns downward.
    Last edited: Aug 28, 2013
  6. carltie

    carltie New Member

    Messages:
    4
    Location:
    Boston
    Fair enough. I agree a licensed plumber would has to complete the job . Any thoughts on how much this re-work would cost me?
  7. Gary Swart

    Gary Swart In the Trades

    Messages:
    7,298
    Location:
    Yakima WA
    No way anyone will even venture a guess on the cost. Several reasons, but a couple of reasons include the extent of the work than needs to be done has to be evaluated on site and local plumber rates vary widely from place to place. Your best bet is to get at least 3 estimates from local contractors. Talk to locals about their experiences. Keep in mind that some estimates may be very high because they really don't want the job. Also be leery of an estimate that is super low. Finally, don't waste you time trying to figure out how the job should be done. Let the pros determine that.
  8. Tom Sawyer

    Tom Sawyer In the Trades

    Messages:
    3,050
    Location:
    Maine
    If I'm seeing the mess right it appears that both fixtures drain into a 4" x 1-1/2" sanitary tee that was cut into the cast stack. It needs to come out and be replaced with a 4x2 and both drains then need to enter the new line separately. It looks to me like around 500 bucks or so.
  9. carltie

    carltie New Member

    Messages:
    4
    Location:
    Boston
    Great advise guys! Thanks a lot. Looks like the stack would have to be cut open and rectified after all. Seems like a major plumbing job.
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