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Thread: Washer Dryer Hook Up Moving to Upstairs

  1. #16
    DIY Member skoby's Avatar
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    What are the requirements for a laundry sink. There's a 1 1/2" drain pipe on floor below where I'd like to put the washer.

    If 1 1/2" is ok then I could run a pipe one floor down and into a laundry sink. It's not the best solution but may be allowable if the 1 1/2" drain is sufficient.

    Last edited by skoby; 06-06-2012 at 10:43 AM.

  2. #17
    Forum Admin, Expert Plumber Terry's Avatar
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    A laundry sink is supposed to be 2" waste line and 1.5" trap arm.
    A washer is 2" waste line and 2" trap arm.
    Some areas like a 3" waste line and 2" trap arm for a washer.

  3. #18
    In the Trades Tom Sawyer's Avatar
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    IPC is now all 3" waste and 2" trap arm.

    If you are in Mass, doing this without a permit and a license could land you in a world of trouble and wind up costing ten times what you saved by doing it yourself. Not that I'm being anti DIY here because I have been accused of that before, just telling you the what if's. Massachusetts is not a DIY plumbing friendly environment.
    Last edited by Tom Sawyer; 06-06-2012 at 10:46 AM.
    [B]No, plumbing ain't rocket science. Unlike rocket science, plumbing requires a license[B]

  4. #19
    DIY Member skoby's Avatar
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    Looks like I'm at a standstill for now.

  5. #20
    DIY Member skoby's Avatar
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    Quote Originally Posted by Tom Sawyer View Post
    IPC is now all 3" waste and 2" trap arm.

    If you are in Mass, doing this without a permit and a license could land you in a world of trouble and wind up costing ten times what you saved by doing it yourself. Not that I'm being anti DIY here because I have been accused of that before, just telling you the what if's. Massachusetts is not a DIY plumbing friendly environment.

    I haven't done anything yet except pull down walls. I'm still deciding if it'll be worth it to have it done.
    Last edited by skoby; 06-06-2012 at 02:18 PM.

  6. #21
    Retired Defense Industry Engineer jadnashua's Avatar
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    Short answer...if the pipe exits out the roof, it is likely a vent! Now, you don't need a bunch of vents out the roof, they can be combined, but the rules are you can't combine them just anywhere...it must be 42" above the highest drain or 6" above the flood plane of the sink, whichever is higher. Once a drain, always a drain...same thing on a vent. Now, sometimes it isn't that hard to add a vent so you can use an old one for a drain, but again, there are rules.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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