Jackmac
New Member
Hello,
First a little background on the project. I just purchased a house what was built in 1924. All the drain piping in the house is cast iron. The house has a 4" stack running from the basement, up 2 floors, and then out the roof. We are currently renovating the kitchen, and the stack is external to the wall. The previous owners had built out a bulk head around the stack. I would prefer to reduce the size of the stack to 3 inches and sink it back into the wall between the studs.
Currently, the 2nd floor bathroom drains from a common branch off of this main stack. The first floor bathroom and the kitchen sink currently drain into the 4" cast iron drain system after it has gone horizontal on its way out of the house and toward the septic tank.
So the question is how do I get the waste stack pushed back into the stud bay in our kitchen in accordance with the 2003 IPC (Connecticut's current plumbing code)?
My thought has been to rip out the cast iron and move to 3" PVC from the roof down to the basement and tie into the 4" cast iron. Due to the layout this would require an offset just before current cast iron stack goes horizontal.
I think this falls within code, but I am confused on the waste stack vent portion of the IPC. If I put an offset in and reduce the size of the stack, am I no longer able to use the waste stack as a vent?
Thanks
First a little background on the project. I just purchased a house what was built in 1924. All the drain piping in the house is cast iron. The house has a 4" stack running from the basement, up 2 floors, and then out the roof. We are currently renovating the kitchen, and the stack is external to the wall. The previous owners had built out a bulk head around the stack. I would prefer to reduce the size of the stack to 3 inches and sink it back into the wall between the studs.
Currently, the 2nd floor bathroom drains from a common branch off of this main stack. The first floor bathroom and the kitchen sink currently drain into the 4" cast iron drain system after it has gone horizontal on its way out of the house and toward the septic tank.
So the question is how do I get the waste stack pushed back into the stud bay in our kitchen in accordance with the 2003 IPC (Connecticut's current plumbing code)?
My thought has been to rip out the cast iron and move to 3" PVC from the roof down to the basement and tie into the 4" cast iron. Due to the layout this would require an offset just before current cast iron stack goes horizontal.
I think this falls within code, but I am confused on the waste stack vent portion of the IPC. If I put an offset in and reduce the size of the stack, am I no longer able to use the waste stack as a vent?
Thanks