As this is my first post, let me first say that over the years I've found plenty of useful, candid advise on this forum - thanks all.
I need to replace a section of 4'' CI waste stack and lead closet bend in an "older" house, and hope that someone will be able to tell me if I'm on the right track. A sophisticated CAD drawing is attached, but here are the basic questions that I have (doing my level best to use the correct terminology).
1. The project is involves a first floor bathroom. The current vent for the toilet is original and originates in the lead closet bend (see drawing). So, since I'm pretty sure I can't replicated the existing configuration, I'll need to put the vent downstream from the toilet. My plan is to tie into the existing 2'' galvanized steel vent, which seems to be in good condition (again - see drawing). If that's fine, should I use a 4''x2'' sanitary Tee to begin the connection to the vent?
2. If #1(above) is OK, then to do it, I'll need to orient the waste pipe parallel to the plumbing wall in order to connect to the vent. To do that, I think I would need to have two 1/4 bends in the horizontal pipe to the stack (the toilet flange is about 3'' from the stack). I was planning to use 3'' pvc for the toilet drain pipe. Does that all sound OK?
3. There's a 45 degree jog in the stack just behind the first floor toilet (once again - see drawing). It would be easiest to tie into the stack in the section that is 45 degrees to vertical, and I'm guessing that - since it would be closer to the ground - there would be slightly less noise than if I were to connect above the second 1/4 bend. Is there a disadvantage/problem with having a "proflex" connection on other than vertical pipes?
4. Other obvious problems/gottchas? I feel pretty confident in the actual work, if the plan is sound. But if there are many other considerations that I am overlooking, please let me know!
A note on the drawing: we do have other fixtures, other than a toilet. The plumbing to them was omitted to simplify the drawing. the first Floor shower and lav would connect just below the toilet.
Thanks in advance for your response.
I need to replace a section of 4'' CI waste stack and lead closet bend in an "older" house, and hope that someone will be able to tell me if I'm on the right track. A sophisticated CAD drawing is attached, but here are the basic questions that I have (doing my level best to use the correct terminology).
1. The project is involves a first floor bathroom. The current vent for the toilet is original and originates in the lead closet bend (see drawing). So, since I'm pretty sure I can't replicated the existing configuration, I'll need to put the vent downstream from the toilet. My plan is to tie into the existing 2'' galvanized steel vent, which seems to be in good condition (again - see drawing). If that's fine, should I use a 4''x2'' sanitary Tee to begin the connection to the vent?
2. If #1(above) is OK, then to do it, I'll need to orient the waste pipe parallel to the plumbing wall in order to connect to the vent. To do that, I think I would need to have two 1/4 bends in the horizontal pipe to the stack (the toilet flange is about 3'' from the stack). I was planning to use 3'' pvc for the toilet drain pipe. Does that all sound OK?
3. There's a 45 degree jog in the stack just behind the first floor toilet (once again - see drawing). It would be easiest to tie into the stack in the section that is 45 degrees to vertical, and I'm guessing that - since it would be closer to the ground - there would be slightly less noise than if I were to connect above the second 1/4 bend. Is there a disadvantage/problem with having a "proflex" connection on other than vertical pipes?
4. Other obvious problems/gottchas? I feel pretty confident in the actual work, if the plan is sound. But if there are many other considerations that I am overlooking, please let me know!
A note on the drawing: we do have other fixtures, other than a toilet. The plumbing to them was omitted to simplify the drawing. the first Floor shower and lav would connect just below the toilet.
Thanks in advance for your response.