Hello everyone!
I am adding a second story bathroom on top of the 1st story bathroom.
1st story bathroom has a 3" drain under the slab, for the toilet, toilet is vented thru 2" pipe and sink discharges into this vent. So it looks like this:
I
I ---U lv
I /
I/
I
======U WC
=== is a 3" pipe, --- is 2" pipe, I is a 2" vent and U is a water trap,
I plan to cut the 3x3x2 tee out, replace it with 3x3x3 tee and run a 3" stack up to the second story, so i can drain a toilet down. The sink and a toilet will be along the same wall and a shower 8' away.
I was hoping to make it simple, run this 3 inch stack to the 2nd floor, it would change to 2" at the tee between the joists and 2" will serve as a vent for both 1st and 2nd floor toilets.
I am not sure if I can drain my sinks and shower into the same stack. and also if i need any extra vents. The way i drew it, that 2nd story shower and a sink will have a separate vent and will drain below 2nd story toilet. Should I extend this 2" stack all the way down and try to drain it into horizontal 3" pipe before the 1st floor toilet vent? I am looking for the simplest solution, horizontal pipe is under the slab and I want to avoid a lot of concrete braking
I would highly appreciate an advice from the professional. Our project is way over budget and we cant afford a licensed plumber to do the work. I pulled a building permit and it means the plumbing will have to pass an inspection.
Thank you very much for your input!
I am adding a second story bathroom on top of the 1st story bathroom.
1st story bathroom has a 3" drain under the slab, for the toilet, toilet is vented thru 2" pipe and sink discharges into this vent. So it looks like this:
I
I ---U lv
I /
I/
I
======U WC
=== is a 3" pipe, --- is 2" pipe, I is a 2" vent and U is a water trap,
I plan to cut the 3x3x2 tee out, replace it with 3x3x3 tee and run a 3" stack up to the second story, so i can drain a toilet down. The sink and a toilet will be along the same wall and a shower 8' away.
I was hoping to make it simple, run this 3 inch stack to the 2nd floor, it would change to 2" at the tee between the joists and 2" will serve as a vent for both 1st and 2nd floor toilets.
I am not sure if I can drain my sinks and shower into the same stack. and also if i need any extra vents. The way i drew it, that 2nd story shower and a sink will have a separate vent and will drain below 2nd story toilet. Should I extend this 2" stack all the way down and try to drain it into horizontal 3" pipe before the 1st floor toilet vent? I am looking for the simplest solution, horizontal pipe is under the slab and I want to avoid a lot of concrete braking
I would highly appreciate an advice from the professional. Our project is way over budget and we cant afford a licensed plumber to do the work. I pulled a building permit and it means the plumbing will have to pass an inspection.
Thank you very much for your input!