Hello am wondering if I can use a 3-3-2 Low Heel elbow to vent a WC? If I'm not using a standard description, this is a 3" elbow with a 2 " take off (sort of a 'Y' fitting) The elbow would be oriented vertically with the 2 " on the 'upstream' side. This will be connected directly below the WC. My issue is a spacing one, can't fit the necessary vent down stream of the elbow. Is is appropriate to have a vent 'upstream' of the fixture?
Thank you.
Tim

Addendum: I found an other post regarding this fitting. It appears that the answer would be that this would not be allowed. However, to proceed, the 2" would be to run a dry vent for the WC, if that changes anything.

Hi Tim...

No vents upstream of the fixture... ;)

No side inlet elbows allowed in most states, but as you have heard me say before, you'll need to double check with your plumbing inspector to be 100% sure, OK?

Since you are from California I am having trouble ironing out the wet venting issues we discussed in your other thread.

Milo, another "plumbing expert" from the site, is from your state and when he pops in will look at this and give you the proper advice on wet venting your setup.

Most codes are very similar, but I have noticed that California has a few codes that can be quite different than the codes I work under so give Milo a little time to post in on this, OK? I will send a private message to him!@

Thanks...

Mark

Mark, Thank you for all your efforts.I have a very sinking feeling that I've built myself into a very difficult box. I went out and bought a bunch of fittings to try and experiment with different layouts with out much success. Do you think it would be reasonable to have the 3" pipe do a U turn using two 90's? (Sorry don't laugh too hard!)
Thanks again.
Tim

Hi Tim...

Any chance you can post a REAL picture on this. If possible, that would help me to finalize this for you, OK?

Also, have you considered changing/moving the layout of the bathroom abit... maybe?

Back to you...

Mark

Mark will post picture later, but yes was thinking that if I rotated the toilet so it backed against the shower that might work. Any other suggestions would be appreciated.
Thanks again,
Tim

Mark, What you are looking at is the joists running parallel to the wall which the 3" main drain line passes through. The red tubes are the radiant heating tubes. The 3" pipe is temporarily connected to the LAV drains coming from the upstairs bathroom. The distance from the far wall to the drain pipe is 71" and to the other wall is 54"(This is the space for the shower as currently designed) I've been thinking of trying to locate the toilet inline with the 3" drain. I would like to try and avoid moving the toilet towards the far wall, as it will place the toilet across from the door. Make sense?
The top of the joist is 8.5" above the concrete floor,and approximately 4" above the centerlline of the 3" pipe.
What else can I tell you? Hope this helps, and Thank you for everything so far.
Tim

Thank you! This is super helpful... ;)

I'm off to work (frozen pipes everywhere... *UGH*), but will be back in later tonight and will post my thoughts then... hopefully finish this up so you can get started, OK?

Chat soon...

Mark, good luck with your frozen pipes. Did you see the frozen car in NY? Pretty funny, I thought, but it was not my car. So, I've spoken with a plumber regarding this and he agreed that you could not 'wet vent a WC'. But then became unsure of some of the other issues. I think I've come up with a solution. If I rotate the shower to run along the inside wall towards the door. And put the toilet against the wall where the shower was, I think I will have sufficient space to run the piping. See attached drawings.
Mark, and anyone else, let keep this thread open and end the original post, if that is all right.
Tim

Hi Tim...

I did not see the car in NY, but will look it up as I love that kind of stuff... especially because it is NOT my car... :D

This last layout you drew up works fine as you are individually venting everything and all fits, but I'm just not thrilled with the layout? If you are really OK with the layout, however, then as you drew it all you are fine!

I also drew something up I think would work or could even be reversed... see image. If this is piped as drawn below the toilet gets its own 2" vent and the 2" sink drain/vent WET VENT the shower drain. The vents connect at 42"-48" off the floor via an INVERTED sanitary tee fitting off the 2" toilet vent and then the 2" toilet vent continues to the 2nd floor to connect to the 2" water closet and tub vent you mentioned in your diagram.

I have one or two other layouts if interested...

Remember...

The 3"x2" wye for the toilet vent MUST roll above the centerline of the toilet drain for it to be a vent.

Use long sweep elbows when changing directions (horizontal to horizontal and horizontal to vertical).

Install a full-size 2" cleanout at the toilet vent and under the sink cabinet.

Otherwise, let me know what you are thinking here, OK?

Mark

Mark, Thank you so much for this drawing. Had not considered placing the WC next to the LAV. We were thinking of trying to keep the WC out of view, but if I can move the door/extend the wall then this might work. I would like to see your other ideas, if you have the time. In my last drawing. Could I eliminate the shower dry vent, making it wet vented by the WC? Lastly, the layout I originally posted r would be our preferred, but it does not seem possible??
PS, again thank you for all your time and efforts. After tomorrow I'll be going away for 35 days, so this will have to wait. I'll have my wife check here to see what your suggestions are.
Tim

Hi Tim (Tim's wife)...

You asked, "In my last drawing could I eliminate the shower dry vent, making it wet vented by the WC", and the answer is no because in your area you CANNOT wet vent a toilet, right?

I'll work up a couple more ideas and post them in the next couple days, OK?

Check back later...

Mark

Mark, Thanks again. Whenever you have the time. I'd really appreciate your input.
Tim