Amateur Plumber
Member
The city has run new sanitary sewers to my area, and I am about to abandon my septic tank. There are now 2 lines exiting the house and going to the septic tank. One from the kitchen, and one from the bathroom. There are 2 separate vent stacks going to these two drains. I have had a lot of slow drainage trouble with the kitchen drain backing up, so I want to abandon that line outside the house, and run a new line inside the house to tap into the main drain servicing the
bathroom. Key points:
- the new line will be 2" PVC sloped down to the 4" main drain
- the new line will continue to be vented as before for the existing kitchen, through the roof (both vents will still be in use)
- the new line will be about 20 feet long, run along the basement ceiling
- by running the new line inside the house, there will only be the one main 4" drain exiting the house, pretty much on a straight shot to the lateral
My question is how to tap into the existing bathroom plumbing with this new line. My options are to:
1. put a wye into the main line going from the bathroom fixtures (bath and shower) to the 4 " main drain, and run the kitchen line into that.
2. tap into an existing plug that is in the structure (see photo) where the bathroom line now taps into the 4" main drain. But, is that plug intended as a clean-out? This option is a much straighter shot than option 1.
I'm attaching two photos. One shows the main 4" drain, which has the clean-out readily accessible. The other is looking up at the structure where the bathroom fixtures tap into the main drain, and the plug.
Thanks for any advice.
bathroom. Key points:
- the new line will be 2" PVC sloped down to the 4" main drain
- the new line will continue to be vented as before for the existing kitchen, through the roof (both vents will still be in use)
- the new line will be about 20 feet long, run along the basement ceiling
- by running the new line inside the house, there will only be the one main 4" drain exiting the house, pretty much on a straight shot to the lateral
My question is how to tap into the existing bathroom plumbing with this new line. My options are to:
1. put a wye into the main line going from the bathroom fixtures (bath and shower) to the 4 " main drain, and run the kitchen line into that.
2. tap into an existing plug that is in the structure (see photo) where the bathroom line now taps into the 4" main drain. But, is that plug intended as a clean-out? This option is a much straighter shot than option 1.
I'm attaching two photos. One shows the main 4" drain, which has the clean-out readily accessible. The other is looking up at the structure where the bathroom fixtures tap into the main drain, and the plug.
Thanks for any advice.