Thank you in advance for your help. I relocated the toilet which originally was right next to the main stack 6 feet away. In between the stack and the toilet I put 2 tees in the three inch plastic line. One of the tees handles the bathtub and the next one handles the sink. These were there originally but were plumbed into the toilet elbow. My question is if I install a new vent line at the end of the 3 inch line after the toilet will that allow enough air into the system to handle the amount of water discharged by flushing the toilet. I know that I can position the toilet up to 10 feet away from the main without the extra vent as toilets are self venting. I am just concerned about the need for air as the toilet refills and the water columb passes the other two tees. I was very careful with the slope of all piping. I can make the vent as large as necessary. Any advice is appreciated.

Hi Ron...

I'm afraid that your knowledge of plumbing and venting is way off here... ;)

Before I go into much, what state are you in? Let me know and I'll post info. After that, OK?

Mark

Ron, could you possibly draw up a diagram, or even post a picture of the way you have it plumbed now, and how you plan on pluming it? Either way, is really sounds like its not up to code, but we may be able to help you accompish code. Hope we can help. Let us know, okay.

Thanks for the info. I am in New York State. I uploaded a picture. I hope this helps

Okay, first off, when you tie your toilet vent/sink drain and tub drain into the three inch, its in the horizontal right? If so, you will need to use wye fittings with 45s, not tees here okay? Other than that, you will need to dedicated vent for the tub, you can take it up and either tie it in around 48 inches from the floor above the sink, or tie it in 48 inches above the floor into the 3" vent, or find a way to get it up in the attic and tie it in there, or take it all the way out the roof. Tub vent can be 1 1/2. Everything else looks okay from what I can gather. Hopefully Mark will pop in and correct me if he sees something else. Oh yeah, when you take off the toilet vent/sink drain, roll the wye so it is above center line of the three inch pipe. Any more question, come on back and we will do our best to help.

Now, you may also be able to tie the tub drain into the toilet vent/ sink drain, and it will be wet vented, depends on what kind of room you have. This would save a lot of work. Im not up on New york code, so I'm not sure they allow wet venting, but almost everywhere does these days.