![]() ![]() The ejector pit is located underneath a stairway so the easy directly vertical route for a vent pipe is not feasible. As far as I can tell there is no evidence at all of any vent for the ejector or any of the basement bath fixtures. I did not realize I can not tie the ejector vent to the other vents - that means I may have to penetrate the roof twice. I am operating under the assumption that is what my plumber had in mind. ![]() Somewhere on these forums I've seen discussion of the IPC allowing a wet vent setup for a bathroom group that would allow the whole group to wet vent back to the vanity tee and then vent the vanity as usual. I believe the layout is a typical 5x8 setup with the tub/shower at the far end.that end is bordered by the concrete foundation walls on 2 sides and the dimensions of the stubs relative to walls seem to indicate the fixture layout I showed in the sketch. If neither is trapped then obviously I have no choice but to tear up the slab. I have not checked the 1-1/2" line b/c it's capped right now, but I am assuming if the 2" is not trapped the 1-1/2" is trapped. Both the 1-1/2" stub and the 2" stub are embedded in concrete - no gravel or anything like that to speak of.as far as the P-trap, it appears (although I have no way of being really really sure) that the 2" line is not trapped. You had some of the same questions I had. ![]() I have not found any books that address a situation close to the one I have described. Any thoughts or helps is appreciated as this is my first venture into significant DWV plumbing and I'm trying to do it right. Please see the attached sketch for clarity. The wet bar sink would be vented locally and said vent tied into the group vent for the bathroom that eventually will protrude through the roof. I assume if this was "legal" I would need to tie it in below the waste/vent tee for the vanity sink. I'm obviously trying to avoid busting the slab to tie in this wet bar, but I'm worried bringing it in above the slab might mess up the group vent. I'd like confirmation of this.Īssuming the above is correct (I will be posting a pic below that should help anyone interested on confirm), my big question is whether I can run an additional drain from a proposed wet bar into the basement vanity drain line above the slab. I assume this means I will have to run a new vent through the roof for the basement bath. One vent is located near the kitchen/laundry, and one each near the two existing bathrooms on the main floor. I don't believe my house has a main vent stack as it appears there are 3 separate vents through the roof. My plan is to tie that vent back into the vent for the ejector pit in the basement ceiling and then run a vertical vent up through a chase into the attic and out the roof eventually. Based on extensively searching through many posts on these forums I have managed to put together what I think is the correct way to finish the DWV piping for this setup using a group vent that tees off where the vanity sink will connect to the 2" stub. About 10' away I have a pit for a sewage ejector pump. What I have is three stubs coming out of the slab, a 2" stub where a vanity sink would go, a 4" stub where a toilet would go and a 1-1/2" stub where a tub/shower would go. The basement has been plumbed (to some extent) for a bathroom underneath the slab. I have a 2 yr old house that had an unfinished basement when we bought it. ![]()
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