Please Help Me With Shower Plumbing

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by seanmathes, Jan 15, 2008.

  1. seanmathes

    seanmathes New Member

    Messages:
    12
    Location:
    Colorado
    A guy over at the John Bridge tile forum suggested I come over here for some help. I am in the process of building a shower. I recently put in the plumbing and a few of the guys over there are telling me that I have an issue with the horizontal wye. I am pretty sure what I have is a wet vent.

    Honestly, I am not getting a building permit or an inspection but I do want to do it right. As long as it operates correctly and I won't have any major problems the way it is I am fine with it.

    Here are a few pics and also the link to my post at the other forum.

    http://www.johnbridge.com/vbulletin/showthread.php?t=57907&page=3&pp=15

    the plumbing stuff begins on about page 3.

    Thanks for any input I really appreciate it.


    As I say in the pic below. The 3" stack is less than five feet from the drain and actually closer to 3'. This drain comes from a bathtub that is just to the right of the shower. This is a 2" horizontal line.

    Attached Files:

    Last edited: Jan 15, 2008
  2. Redwood

    Redwood Master Plumber

    Messages:
    7,450
    Location:
    Connecticut
    All I see is a piece of pipe. Please provide more info on how this drain is constructed.
  3. seanmathes

    seanmathes New Member

    Messages:
    12
    Location:
    Colorado
    Wow, that was fast! Sorry I was editing the post to add more and you already replied. :)
  4. Redwood

    Redwood Master Plumber

    Messages:
    7,450
    Location:
    Connecticut
    Okay where does the other end of that wye go... Sorry for the too quick answer.:D
  5. seanmathes

    seanmathes New Member

    Messages:
    12
    Location:
    Colorado
    To the right it goes to the stack or the wet vent, I believe that's the right terminology. This is a 3" stack with a pipe going up and one going down to the sewer I think. To the left is the trap and drain for the tub. In the picture you can see the drain and trap for the shower.
  6. seanmathes

    seanmathes New Member

    Messages:
    12
    Location:
    Colorado
    Here is a better picture where you can see the stack.

    Attached Files:

  7. hj

    hj Moderator & Master Plumber Staff Member

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

    The important thing is what is connected to the drain line to the left of the Y.
  8. seanmathes

    seanmathes New Member

    Messages:
    12
    Location:
    Colorado
    To the left of the Y is the bathtub drain.
  9. seanmathes

    seanmathes New Member

    Messages:
    12
    Location:
    Colorado
    BUMP for more info and advice please
  10. Fubar411

    Fubar411 New Member

    Messages:
    141
    Location:
    St Louis, MO
    So you have a bathtub and shower sharing a 3" drain? The bathtub is vented w/ 2" I assume?

    If wet venting is allowed where you are, it prob is okay.
  11. Terry

    Terry Administrator Staff Member

    Messages:
    14,943
    Location:
    Bothell, Washington
    I was trying to help a home owner with his handyman plumbing one day, it was plumbed like that.

    They had added a tub beyond the shower, and used the same line.
    Everytime the tub was drained, it backed up in the shower.
    It was pretty nasty looking too.

    Normally, you would have a vent after the trap, before you wyed in another fixture to it.

    And that has always worked well.
    There are shortcuts, and the shortcuts don't save much in time or money.
    The funny thing about the homeowner above, he didn't blame the handyman that had plumbed without venting fixtures.
    He did blame the plumbing contractor that had to keep coming out and snake his drains.

    He also had added a washer drain below his upstairs kitchen sink in the basement.
    That would overfllow too, when the sink above was drained.

    If it were me, I would put in the vent and wyes.

    Or if you want to wet vent it, change the pipe from the stack and wye to 3". You could use a 3x2 wye with a 3x2 fitting reducer on the end.
    Don't know if it would pass an inspection where you live, but the 3" sizing would give it a chance to vent.
  12. seanmathes

    seanmathes New Member

    Messages:
    12
    Location:
    Colorado
    Terry, thank you for the reply, but the 3" stack is a wet vent if I am understanding wet vent properly. The 2" horizontal pipe runs from the tub and shower to the 3" pipe. The 3" tee goes down and up. The pipe that goes up is the vent I assume and the one that goes down goes to the sewer. If I understand this properly this is what makes it a wet vent right?



    ******* Maybe I didn't explain well enough. Ok, so the bathtub is already installed. As soon as you walk in to the room it is on the right. I am converting a closet to a shower that is to the left of the bath tub. They share the same wet wall. The trap in the pictures is for the shower I'm installing. There is also a toilet to the left of the shower that goes into the 3" stack. The toilet is all the way to the left though and is on the other side of the stack than the shower and tub.

    In the first picture the horizontal line is the existing bathtub drain that runs to the 3" stack.

    I Y'd into that horizontal 2" line for the shower drain.

    There are also more pictures in the original post on the other site.

    Am I explaining this properly or do I need more??

    Thanks
    Last edited: Jan 16, 2008
  13. Terry

    Terry Administrator Staff Member

    Messages:
    14,943
    Location:
    Bothell, Washington
    What I'm suggesting, is to replace the horizontal 2" pipe with 3" pipe and wye for the shower connection.

    Right now, when the tub drains, it can pull the water from the trap of the shower.

    In the Seattle area, there isn't any inspector that would let me plumb it the way it is shown.

    [​IMG]
    Last edited: Jan 16, 2008
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