Greetings all,
I've got an interesting issue, and each possible solution seems to hit a dead-end..
I have a townhouse, and am remodeling a second floor bathroom. I'm basically flipping where both the toilet and tub/shower go, so that it's more of an open bathroom, instead of a galley that it was.
Within this task, the tub plumbing and drain are easy to relocate as they will run between the same two floor joists, just ~4 feet down the joists..
The toilet on the other hand is a pickle.. The old toilet location had the back of the toilet up against the side wall of the town-home that is a shared wall, with the plumbing going down it, through the first floor (living room wall) and into the basement. The current waste pipe goes past the cut living-room bottom plate, and goes through a cut in the plate towards the neighbors basement (it connects to his sewer connection as he's on an end unit, and it's closer. We also have a couple of sink drain connections coming into our sewer pipe from the opposite side neighbor.
What I would like to do is to have the waste pipe in the bathroom go down into the floor two joists over from where it currently resides. I've read that I can't put a hole in the joists as it would have to be slightly over what is allowed due to it being a 3" pipe, and the joists are 2x10. I don't see a way around this with being legal with sistering, boxing, etc.. Soo, on to other possible options.
I was thinking I could run the new waste line down the same wall towards the basement, then tie it into the existing pipe two studs over, but that would involve drilling through the studs that are load-bearing from the second floor weight. Even if I opened up the living room wall downstairs, I could only put a small hole as per code into the studs, or a slightly larger one if I doubled up the studs (up to two each, that I need to go through) but the holes would be slightly too big to be allowed) - That is, if they even framed properly - the bathroom wall (mind you, not load-bearing has a 2x6 plate, but has 2x4 stud completely randomly spaced and staggered on my side vs the neighbors side.. One would hope there are 2x6 studs below..
This leads to possible option 3: Run the new waste pipe down the walls parallel to the old one (but two studs over) and once it gets into the basement, make my own run all the way across the house to the sewer connection on the other side. This presents issues as well. I have a drop ceiling in the basement (great for access) but bad for additions because when I drop the pipe into the basement between the joists, I've got to stay above a steel beam that holds them up about 10 feet away, then would need to drop the pipe under a number of HVAC ducting at the other side of the house, but then come back up to the sewer connection that is just below the bottom of the joists in an unfinished area of the basement, which all ties into a first floor half bath. Obviously I can't have the pipe go uphill, and have to keep a steady small angle down for flow.. So I'm out of ideas..
If there was a way to use some type of steel hole supports on the 2x6 studs like they have for 2" pipe on 2x4's that would be great, but I haven't seen anything like that at the size needed.. Is there another solution to tie the new and old pipe's together after I get out of the second floor, such as boxing in an angled pipe through the two studs in the way, or some other thing I haven't thought of?
I've thought of drilling through the second floor joists, first floor joists (both 2x10) and that's a no-go for a 3" pipe, as well as trying to figure out how to get a Y into the living-room wall downstairs where the existing pipe is, but can't figure out a way as it's load-bearing (although the plate and header joist are completely cut through on the second floor to let the waste pipe drop down into the first floor)
I'll take some pics and/or make diagrams to try to help..
Headaches all over..
I've got an interesting issue, and each possible solution seems to hit a dead-end..
I have a townhouse, and am remodeling a second floor bathroom. I'm basically flipping where both the toilet and tub/shower go, so that it's more of an open bathroom, instead of a galley that it was.
Within this task, the tub plumbing and drain are easy to relocate as they will run between the same two floor joists, just ~4 feet down the joists..
The toilet on the other hand is a pickle.. The old toilet location had the back of the toilet up against the side wall of the town-home that is a shared wall, with the plumbing going down it, through the first floor (living room wall) and into the basement. The current waste pipe goes past the cut living-room bottom plate, and goes through a cut in the plate towards the neighbors basement (it connects to his sewer connection as he's on an end unit, and it's closer. We also have a couple of sink drain connections coming into our sewer pipe from the opposite side neighbor.
What I would like to do is to have the waste pipe in the bathroom go down into the floor two joists over from where it currently resides. I've read that I can't put a hole in the joists as it would have to be slightly over what is allowed due to it being a 3" pipe, and the joists are 2x10. I don't see a way around this with being legal with sistering, boxing, etc.. Soo, on to other possible options.
I was thinking I could run the new waste line down the same wall towards the basement, then tie it into the existing pipe two studs over, but that would involve drilling through the studs that are load-bearing from the second floor weight. Even if I opened up the living room wall downstairs, I could only put a small hole as per code into the studs, or a slightly larger one if I doubled up the studs (up to two each, that I need to go through) but the holes would be slightly too big to be allowed) - That is, if they even framed properly - the bathroom wall (mind you, not load-bearing has a 2x6 plate, but has 2x4 stud completely randomly spaced and staggered on my side vs the neighbors side.. One would hope there are 2x6 studs below..
This leads to possible option 3: Run the new waste pipe down the walls parallel to the old one (but two studs over) and once it gets into the basement, make my own run all the way across the house to the sewer connection on the other side. This presents issues as well. I have a drop ceiling in the basement (great for access) but bad for additions because when I drop the pipe into the basement between the joists, I've got to stay above a steel beam that holds them up about 10 feet away, then would need to drop the pipe under a number of HVAC ducting at the other side of the house, but then come back up to the sewer connection that is just below the bottom of the joists in an unfinished area of the basement, which all ties into a first floor half bath. Obviously I can't have the pipe go uphill, and have to keep a steady small angle down for flow.. So I'm out of ideas..
If there was a way to use some type of steel hole supports on the 2x6 studs like they have for 2" pipe on 2x4's that would be great, but I haven't seen anything like that at the size needed.. Is there another solution to tie the new and old pipe's together after I get out of the second floor, such as boxing in an angled pipe through the two studs in the way, or some other thing I haven't thought of?
I've thought of drilling through the second floor joists, first floor joists (both 2x10) and that's a no-go for a 3" pipe, as well as trying to figure out how to get a Y into the living-room wall downstairs where the existing pipe is, but can't figure out a way as it's load-bearing (although the plate and header joist are completely cut through on the second floor to let the waste pipe drop down into the first floor)
I'll take some pics and/or make diagrams to try to help..
Headaches all over..