||08-09-2012 08:55 AM
Plumbing project and venting
Hi all. I live in a home built in 1928. I've been having issues with my washing machine backing up at the stack drain pipe and spilling water on my basement floor.
I was planning to remove a section of galvanized piping in the basement and replacing it with PVC. My suspicion is that the trap for the washer drain is clogged and that the pipe is sized too small. Part the the section I plan to remove and replace is the drain for the kitchen sink which is almost directly above the washer (or 4 feet to the left of the washer drain stack pipe). I may also add a laundry sink next to the washer.
While investigating, I've noticed that there is no venting of the sink in the kitchen. There is also no venting of the laundry drain, but it is very close to the main vent stack as you can see from the pictures. The galvanized pipe running straight up goes to the ceiling, takes a 90 degree turn and heads about 4 feet where it again takes a 90 degree turn up through the ceiling to the kitchen sink.
Is this a problem that there is no venting in the kitchen sink? It seems to work fine. Is it a problem that the laundry drain has no vent if it is so close to the main vent? Any advice on how to tackle these issues?