Plumbing Layout and Sizing Input

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by everydayak, Apr 8, 2014.

  1. everydayak

    everydayak New Member

    Messages:
    6
    Location:
    Alaska
    Greetings everyone. I could use some expertise. I am a heavy equipment operator and have laid quite a bit of underground sewer, but this is my first residential plumbing project. This is for a cabin I am building. It is being built in a remote area with no building codes. I do want it to function properly and follow standard practices. For scale the toilet is just under 5' from the soil stack.

    All the best.

    Screen Shot 2014-04-08 at 8.13.51 PM.jpg
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,058
    Location:
    New England
    You have two S-traps there - the kitchen sink and the lavatory. You MUST bring the vent off of the trap arm before it turns down. Personally, I'd also run 2" pipe for the kitchen sink, and I don't see any cleanouts. The bathtub can't have the toilet running by its trap arm until it is vented. I'm not sure if the WM standpipe is correct, either...I'm not sure exactly what's there, but I think it, too is an S-trap. Not sure if the kitchen sink an WM may need a larger line, but one of the pros should know.
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,689
    Location:
    Cave Creek, Arizona
    Congratulations, you got the toilet correct. NOTHING else is vented and all those pretty vents are cosmetic and do NOTHING functional.
  4. everydayak

    everydayak New Member

    Messages:
    6
    Location:
    Alaska
    Understood, thanks for the input. I can see where I went wrong, back to the drawing board.
  5. everydayak

    everydayak New Member

    Messages:
    6
    Location:
    Alaska
    Here is another shot at this.

    Screen Shot 2014-04-09 at 10.53.19 AM.jpg
  6. Kiton

    Kiton Member

    Messages:
    61
    Location:
    Quebec
    EverydayAK,

    I think you need to adjust your venting of the sinks, but certainly the bathroom sink. :


    905.3 Unless prohibited by structural conditions, each vent shall rise vertically to a point not less than six (6) inches (152 mm) above the flood-level rim of the fixture served before offsetting horizontally, and whenever two (2) or more vent pipes converge, each such vent pipe shall rise to a point not less than six (6) inches (152 mm) in height above the flood-level rim of the plumbing fixture it serves before being connected to any other vent. Vents less than six (6) inches (152 mm) above the flood-level rim of the fixture shall be installed with approved drainage fittings, material, and grade to the drain.


    PS

    What app did you use to make the drawing?
    Last edited: Apr 9, 2014
  7. Terry

    Terry Administrator Staff Member

    Messages:
    15,052
    Location:
    Bothell, Washington
    The washer can't wet vent over the tub.
    Bring the washer in below the tub. Both the washer and the tub will need vents.

    Like mentioned above, vents can't go horizontal there until 6" over flood level on the lavs and the sink.
  8. everydayak

    everydayak New Member

    Messages:
    6
    Location:
    Alaska
    Thank you guys, this is much appreciated.

    How about this? This cabin is moveable and has a cold crawl space, I'm not able to tie the washer in lower than the "T".

    I'm using a program called MOI 3D. It is an excellent piece of software. It's creator provides excellent support and the files also open native in Rhino 3D. The fittings were downloaded from Mueller's website. MOI 3D allows for extremely fast drawing. I use it to design and build all types of wood and metal projects.

    Screen Shot 2014-04-09 at 4.43.44 PM.jpg

    Screen Shot 2014-04-09 at 4.44.10 PM.jpg
  9. asktom

    asktom Member

    Messages:
    567
    Location:
    Victor, MT
    Do you have that very special sanitary cross with a side inlet that is shown in the center of your drawing in your hand or is it theoretical? There are several other things wrong but none of them matter if you don't have it. Sorry if I sound sharp.
    Last edited: Apr 9, 2014
  10. Terry

    Terry Administrator Staff Member

    Messages:
    15,052
    Location:
    Bothell, Washington
    [​IMG]

    The newer toilets with 3" flush valves will skip right over through a double santee.
    I won't install a double santee.
  11. everydayak

    everydayak New Member

    Messages:
    6
    Location:
    Alaska
    It is a Mueller Double Sanitary Tee with Side Inlet (02772). They are available online. It doesn't sound like it is the proper fitting for this application.
  12. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,689
    Location:
    Cave Creek, Arizona
    Most areas would not permit the side inlet sanitary cross. One reason being that flushing the toilet would force water into the pipe on the opposite side. The "proper fitting" does not come with a side inlet. IT just keeps getting more and more complicated, doesn't it? As an aside, the traditional "double sanitary tee" had the two openings one above the other. The fitting being discussed is a sanitary CROSS.
  13. everydayak

    everydayak New Member

    Messages:
    6
    Location:
    Alaska
    Out of Mueller's Catalog:
    Screen Shot 2014-04-10 at 8.29.50 AM.png
  14. Terry

    Terry Administrator Staff Member

    Messages:
    15,052
    Location:
    Bothell, Washington
    [​IMG]

    Yes, they make a fitting like that, but I would never install one. You would have nothing but problems.
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