New Bathroom Plumbing Help Needed

Hi All,

I just discovered this site - what a great resource.

A little background - I have an old house originally built without a bathroom - later it was added on to an enclosed porch. Lots of problems, so I tore the whole thing down. Now I have a shell of an addition and I am trying to plumb the waste and vent line.

I drew a diagram - obviously I am a beginner - feel free to laugh.

I have a few questions:
- Can I plumb my new bathroom this way?
- Is there a max distance for "A"?
- What fitting would I use for vent/sewer connection?
- What fittings would be best for connecting the shower and sink to the drain/vent?

I should have labelled it, but the shower and sink drains will enter less than 12" above the "T" of the vent and sewer.

I really appreciate any help - there is a lot more to this stuff than I originally thought...plus its tough to live without a bathroom!

Thanks,
Jason

What state or part of the world do you live in? This way someone knowledgeable in your states code can give you a correct answer, and solution.

Good Point - I live in Wisconsin - I am not subject to any inspections or other hassles, but I want this system to work well.

Thanks!

I believe you would be subjected to codes and inspections...
Wisconsin is not in the third world...
If wet venting is allowed you could do it like this...

Redwood - Thanks for the diagram. So I would drain the sink into the toilet drain before the vent and have another vent meet the stack. That would be easy enough.

How about my question for distance of "A"?
And what about having the vent come out of my horizontal run - your diagram has it differently?

I am sure that I am technically bound by the code and I realize most of the code is a good idea. I do live in an area that doesn't do inspections for anything like this. Getting my building permit for demolishing the porch, building a 16X12 addition, and putting a bathroom in the addition involved 5 minutes of talking (no diagram needed) and $25 for the permit. The permit guy's parting words were, "do whatever you want".

You'll have to check the Wisconsin Plumbing Code...
Here's a link...
http://www.legis.state.wi.us/rsb/code/comm/comm081.html

Sorry about mis-drawing the diagram...

Use a combo or wye and 45 at the base...

Here's what you risk by not following codes. Someday you may wish to sell this house. It will require that there be an inspection of the electrical and plumbing. Suddenly, you are told that the buyers loan can not be approved until certain "problems" are corrected. Those problems would be everything that was not done to code. Do you suppose the guy that said, "Do whatever you want" will be around to somehow get you off the hook? Part of the purpose of codes is to assure that things work the way they should, but the other part of codes is to make sure they work safely and without health risks. What codes are not designed to do is to make it difficult or expensive for a homeowner to do or have a project done just for the purpose of being mean.

If I made it seem like I was strongly against the code, I should have been more clear. I know it is a good thing for lots of reasons. And after hearing from you guys, I realize it makes more sense to take the code into consideration when designing this - it probably won't be much more expensive, it will work better, and it will be worth more. I appreciate that.

Any more tips for my installation? Anybody know what the limitations (if any) are for the length of "A"?

The deepest closet bend I recall seeing around here is around 18" deep. I am not sure if there limitation on the depth, but overall length (vertical + horizontal run) is a concern for venting reasons.

Sewer,

How far in overall length can I get from the vent?

Thanks!

In Illinois the total distance from a 4" fixture drain to vent is 6 feet.

You would have to check the Wisconsin code at the link I provided to see what is allowed...