Squeak
Member
I have inherited a DIY basement bathroom that has a shower, a toilet and a pedestal sink. Thankfully I have some pictures and descriptions that help explain how it was plumbed before the concrete when back over.
My question: Could a studor vent buried in a wall cavity, with no other airflow, cause for tiny bubbles to show up in the toilet bowl an hour or so after flushing?
No big air bubbles, no gurggles, no real problem draining from any of the pieces. No odors that I can detect when walking in the bathroom. Shower water trap stays without any issues.
More info: shower connects into a branch of a tee with the other side hooked to an ell to a vertical stub that extends up into wall cavity. Sink drains into this stub about 18" off the ground, and then the stub extends up to a total height of 40" where the Studor is placed.
The shower/sink branch then connect into a 3" waste line downstream of the toilet. This 3" line then goes underground to where it connects to the main waste line of the house at a wye. Basement bathroom is branch "A", whereas branch "B" travels to other part of basement where main stack and vent is.
Given this description, and what pictures I have seen, it appears that this is all ok, from a common sense plumbing perspective.
The only thing I think that might be missing is for any real airflow to get to the AAV. Obviously a simple solution is to put a grate up high in that same cavity space, but before I cut a hole, I wanted to see if there is even the possibility that this would fix the problem.
My question: Could a studor vent buried in a wall cavity, with no other airflow, cause for tiny bubbles to show up in the toilet bowl an hour or so after flushing?
No big air bubbles, no gurggles, no real problem draining from any of the pieces. No odors that I can detect when walking in the bathroom. Shower water trap stays without any issues.
More info: shower connects into a branch of a tee with the other side hooked to an ell to a vertical stub that extends up into wall cavity. Sink drains into this stub about 18" off the ground, and then the stub extends up to a total height of 40" where the Studor is placed.
The shower/sink branch then connect into a 3" waste line downstream of the toilet. This 3" line then goes underground to where it connects to the main waste line of the house at a wye. Basement bathroom is branch "A", whereas branch "B" travels to other part of basement where main stack and vent is.
Given this description, and what pictures I have seen, it appears that this is all ok, from a common sense plumbing perspective.
The only thing I think that might be missing is for any real airflow to get to the AAV. Obviously a simple solution is to put a grate up high in that same cavity space, but before I cut a hole, I wanted to see if there is even the possibility that this would fix the problem.