AskingforaFriend
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Problem? - Second floor toilet connected to a 3” drain pipe that “might” have a trap under the slab floor...
This question is about “adding” a toilet on the second floor to a bathroom in a building designed as a workshop/pool house . I’ll try to be short and direct to the point, I know novels aren’t preferred but this does need history.
I’ve had a on going project since 2013. It’s a shop/pool house (built on a concrete slab) with a couple of rooms in the attic space intended for bedrooms, one room already has a bathroom. The building also has a kitchenette which will come into play in my question.
Before starting sheetrock in the building last year I decided to add a last minute small bathroom to the other room upstairs. The new bathroom is located directly above the kitchenette sink. I utilized the same kitchenette drain pipe/vent pipe for the bathroom sink. Now I needed to plumb the toilet into waste system stack.
Here’s where I may have a potential problem.
The kitchenette was roughed in with a 2” sink drain and vent in the 2x6 wall. For a unknown reason, the hot/cold water lines AND a 3” drain pipe (between the water lines) were rouged in the slab coming up 10” in front of the 2x6 wall.
The plumber that finished roughing in the building after it was framed told me the 3” pipe was of no use and asked if he should plug it. At the time I saw no use for 3” pipe thinking it was a error and agreed to plug it.
Back to the new bathroom. As I determined the best route for the new 3” toilet drain pipe I remembered the plugged drain pipe. All I needed to do was remove the plug and route the pipe up into the 2x6 wall and then connect to the toilet drain pipe between the first and second floor. Simple solution and we moved on to the finishing stage of this long term project...
Recently I was searching the Internet about a plumbing question when I coincidentally read a thread about a ice maker 3” floor drain with a trap.... it took a while but I literally woke up early the next day thinking about the way I connected the new toilet to the waste system...
It’s been eight years since this project started and blueprint versions along with contractors have come and gone. I don’t know who installed the plumbing in the slab but it really doesn’t matter now.
So... will a toilet on a second floor draining into a pipe in a concrete slab with a trap (assuming) pose a problem... ??
I’m going to place a camera in the 3” pipe and hopefully determine if there is a trap.
Thanks for any advice...
This question is about “adding” a toilet on the second floor to a bathroom in a building designed as a workshop/pool house . I’ll try to be short and direct to the point, I know novels aren’t preferred but this does need history.
I’ve had a on going project since 2013. It’s a shop/pool house (built on a concrete slab) with a couple of rooms in the attic space intended for bedrooms, one room already has a bathroom. The building also has a kitchenette which will come into play in my question.
Before starting sheetrock in the building last year I decided to add a last minute small bathroom to the other room upstairs. The new bathroom is located directly above the kitchenette sink. I utilized the same kitchenette drain pipe/vent pipe for the bathroom sink. Now I needed to plumb the toilet into waste system stack.
Here’s where I may have a potential problem.
The kitchenette was roughed in with a 2” sink drain and vent in the 2x6 wall. For a unknown reason, the hot/cold water lines AND a 3” drain pipe (between the water lines) were rouged in the slab coming up 10” in front of the 2x6 wall.
The plumber that finished roughing in the building after it was framed told me the 3” pipe was of no use and asked if he should plug it. At the time I saw no use for 3” pipe thinking it was a error and agreed to plug it.
Back to the new bathroom. As I determined the best route for the new 3” toilet drain pipe I remembered the plugged drain pipe. All I needed to do was remove the plug and route the pipe up into the 2x6 wall and then connect to the toilet drain pipe between the first and second floor. Simple solution and we moved on to the finishing stage of this long term project...
Recently I was searching the Internet about a plumbing question when I coincidentally read a thread about a ice maker 3” floor drain with a trap.... it took a while but I literally woke up early the next day thinking about the way I connected the new toilet to the waste system...
It’s been eight years since this project started and blueprint versions along with contractors have come and gone. I don’t know who installed the plumbing in the slab but it really doesn’t matter now.
So... will a toilet on a second floor draining into a pipe in a concrete slab with a trap (assuming) pose a problem... ??
I’m going to place a camera in the 3” pipe and hopefully determine if there is a trap.
Thanks for any advice...
