Hi, running a new toilet and shower to bedroom. Need to vent , what would the best way to do this. I am running a new 3 inch drain under the slab. Nothing else will be on this drain. Can I run 3 inch to end of wall and then t up with a 2 inch pipe to roof? Can I then put toilet over since drain is 3 foot lower than toilet?

Thanks

http://www.freeimagehosting.net/newuploads/vl1yb.jpg

Here is what I have

Sorry, here is pic

If wet vents are allowed in your area, check with your local Building depa. You can run the drainage like this and one vent will vent the entire group. Good luck, Tom

Thank you very much for the great diagram, this is more like my set up, using this, what would be best way to vent. When I dug up drain, found it was only 2 inch, that is why I ran new line for toilet and shower.

Question... Are you going to hook PVC to Cast Iron?

Your lines are so light I'm having a problem seeing them. All this hinges upon whether wet vents are allowed. Did you cgeck? If the diagram wasn't clear enough let men write it out. Toilet connects to the main. The lavatory connects to the toilet branch and the shower connects to the lavatory branch. The lavatory vent will wet vent the entire group. You have options on running the vent,
1. Run the vent out the roof,
2. Revent back into another fixtures dry vent at leas 6" over the flood rim of that fixture,
3. Revent back in the attic to a existing roof vent, **OR**
4. If mechanical vents,(AAV's) are allowed you can simply install a AAV in place of running a vent. But the AAV MUST be out where it can be serviced or repaired. Good luck, Tom

Question...Are you going to hook PVC to Cast Iron?

Yes, at septic tank line, fernco into 4 inch cast

I am real sorry about the pics, I understand and appreciate the effort you are giving me. This is what I have so far. This is a new install, no sink, just what you see here. (No wet vent) Nothing else is on this line, Toilet and Shower only. It is a complete new install with drain to Septic Tank. Hope I did better this time around... Thanks again

Sorry! I was locked into a sink. My bad!
Your layout works for me! I now understand that you don't have any vents up there to revent back to and you don't want to cut a new hole in your roof. Cheers, Tom Tom

Sorry, wet vent permitted...

Hey Tom, back wall where vent is, in garage, can make cab, also garage attic open and completely accessible, have pull down later and vent is 12 inches from stairs

Now that you bring it up, vent is in attic right by shower and there are no ceilings, can get a snap cutter and tee in.

Thanks a whole lot for the help!!
George

I rewrote my earlier post. Your layout looks good to me. Good luck, Tom

Very nice, thanks a lot. I see you are from Sarasota, we go to Siesta key every year, stay at Aloha Kai, cheers and again, thanks

Ahh Siesta Key! They have the most beautiful beach in Florida. I live a little North of the airport just off The Tamiami Trail on Sarasota Bay. Moved down as a young man and never left. Next time you get down give me a PM and I'll buy the drinks. Cheers, Tom

Hey Tom,
It is OK to use 3 inch pipe instead of 4, isn't it?

Hey Tom,
It is OK to use 3 inch pipe instead of 4, isn't it?

Yes, at septic tank line, fernco into 4 inch cast

I am real sorry about the pics, I understand and appreciate the effort you are giving me. This is what I have so far. This is a new install, no sink, just what you see here. (No wet vent) Nothing else is on this line, Toilet and Shower only. It is a complete new install with drain to Septic Tank. Hope I did better this time around... Thanks again
Outstanding diagram! Good job! Works for me.

just what you see here. (No wet vent)
Not quite correct. Your toilet's wet vented by the shower vent. But it still works for me. Good luck, Tom

For the drain, do you think I should go 4 inch ?

I also have the vent wye at 90 degree to the stack, there was plenty of room in the dirt to do this