Problems with Terry's washer drain pic

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by Ian Gills, Jun 11, 2010.

  1. Ian Gills

    Ian Gills Senior Robin Hood Guy

    Messages:
    2,777
    Location:
    USA
    This picture is famous and, like you, I love it.

    [​IMG]

    But to my crooked eye, it looks like the 2" standpipe is reduced down to 1.5" before the vent.

    Reducing a drain is a no-no. No?

    The vent looks like 1.5" pipe, which is OK.
    Last edited: Jun 11, 2010
  2. Terry

    Terry Administrator Staff Member

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    Bothell, Washington
    The drain is 2" all the way.
  3. bpetey

    bpetey New Member

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    Location:
    CA
    To me it looks like everything is 2" except the sink stub out looks to be 1 1/2.
  4. ak_fangler

    ak_fangler New Member

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    Alaska
    Is that right hand vent loop required, or just desirable?
  5. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

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    That's there to meet the requirement for the WM vent to be 6" above the flood rim.
  6. Terry

    Terry Administrator Staff Member

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    Location:
    Bothell, Washington
    The right hand vents the washer and the left the laundry tray.
    They revent 6" above flood level.

    If they had allowed the laundry tray to wet vent over the washer, there would have been one vent.
    It depends on the jurisdiction that the plumbing is being done in.

    You can show a minimalistic example, but it doesn't allows pass inspection in all cities.
    This one does.
  7. Redwood

    Redwood Master Plumber

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    Yep that be the problem...

    [​IMG]
  8. Ian Gills

    Ian Gills Senior Robin Hood Guy

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    In my other glass eye I note a nail guard missing on the far right stud where the 10 gauge Romex passes through at the bottom.

    [​IMG]
    Last edited: Jun 11, 2010
  9. hj

    hj Moderator & Master Plumber Staff Member

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    Location:
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    The Romex is back far enough so it does NOT need a nail plate. I would either install it as shown without the extra vent, OR use a back to back fixture fitting and put the sink and washer drain at the same elevation without the second vent. Either move the riser to the right when the plumbing was installed, offset the sink drain back to the center outside the wall, or move the sink to accomodate the drain. And our inspectors do not like to see soft copper used above the floor.
  10. Terry

    Terry Administrator Staff Member

    Messages:
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    Location:
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    There is no soft copper there.
    It's a combination of hard copper from the floor and PEX above.
    They let you use PEX in Arizona right? It's not like it's alien or illegal.
    If you look closely at the picture, you see the Uponor (Wirsbo) pipe fittings.

    A double fixture cross can allow the flow of water to skip across. I prefer my method to the double fixture when you are installing a washer with a high flow output.
    The santee forces the water down, and doesn't allow skipping across the fitting.
    Both are legal, but some things just work better.
  11. Rich B

    Rich B DIY Senior Member

    Messages:
    283
    Location:
    New Jersey
    Romex Yellow cover is 12 gauge not 10.....20 amps......and thats all you need for a washer......a dedicated 20 amp circuit with a GFCI outlet is code today, I believe.....


    A 10 gauge Romex might be for the dryer....I did not notice it on my first look.....
    Last edited: Jun 12, 2010
  12. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,540
    Location:
    Cave Creek, Arizona
    A double fixture fitting, (NOT a cross), being a modified double combo, is a directional fitting which does not allow "skip across". They do allow PEX here, although I do not use it. Normally they do not use a hybrid system with PEX and copper combined. Every one has his/her preferred way of doing things. Some are just more complex than others.
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