rorythom
New Member
Hello,
My husband and I bought an old house last year. We have a very small budget with which we have been repairing it. Along the way we have discovered that there is no venting system at all for the plumbing. This was a foreclosed home that I purchased through auction direct from bank/gov so the inspection process was a little different. I never actually used the old toilet because it was taped shut with a sign that said it "appeared to be malfunctioning". Apparently from what I have heard from neighbors, the previous owners had problems with back-ups in the system (which makes perfect sense seeing that there are no vents.)
We are moving the kitchen onto the back of the bathroom wall, so all plumbing will be located on one wall on one floor. There is a basement below where the main 3" drain runs horizontally to an outside 4" main sewer pipe that goes vertically into the ground. From diagrams that I have seen, I would think that this main drain might have a vent above it, however it does not.
I am attaching a diagram of the existing plumbing and a floor plan of how things will be laid out. I am trying to figure out the best place to put in a vent to serve the fixtures that we have. I was hoping because they are all on one wall that it would make solving the problem easier, however the wall is old and thin and isn't even the width of a 2x4. I am thinking of furring out the wall or perhaps just running the vent pipe on the outside of the wall and boxing that part of the wall out.
But I cannot figure out what size vent pipe to use and where to put it in the line. I would like to add on beyond the toilet and put the vent pipe straight up behind the kitchen sink, but I have read that the toilet should be add the end of the drain. The toilet sits directly above the 3" horizontal drain and is connected by a sanitary tee. Originally it had a cleanout at the end of the line, but that's now where I would like to plumb in the kitchen sink and add a vertical vent up through the roof. Would that work? Could the tub and toilet wet vent through that? I could vent the washer and bathroom lav up and tie-in to the proposed main vent in the attic.
Perhaps I am over my head here. What is really throwing me is the placement of drains into the line, particularily which order they should be in. There are some other branches off the main 3" line that you will see in the diagram that I am trying to figure out how to utilize. I don't think the 1 1/2" line is viable anymore. We had to fix the slope of the 3" pipe (it was not properly supported and was actually sloping away from the sewer), so now the 1 1/2" is up between the joists. Besides it is coming straight out the top, which seems to be frowned upon.
Any thoughts would be very welcome. I'm going round and round inside my head trying to work it all out. Thanks! ps. We are in California
My husband and I bought an old house last year. We have a very small budget with which we have been repairing it. Along the way we have discovered that there is no venting system at all for the plumbing. This was a foreclosed home that I purchased through auction direct from bank/gov so the inspection process was a little different. I never actually used the old toilet because it was taped shut with a sign that said it "appeared to be malfunctioning". Apparently from what I have heard from neighbors, the previous owners had problems with back-ups in the system (which makes perfect sense seeing that there are no vents.)
We are moving the kitchen onto the back of the bathroom wall, so all plumbing will be located on one wall on one floor. There is a basement below where the main 3" drain runs horizontally to an outside 4" main sewer pipe that goes vertically into the ground. From diagrams that I have seen, I would think that this main drain might have a vent above it, however it does not.
I am attaching a diagram of the existing plumbing and a floor plan of how things will be laid out. I am trying to figure out the best place to put in a vent to serve the fixtures that we have. I was hoping because they are all on one wall that it would make solving the problem easier, however the wall is old and thin and isn't even the width of a 2x4. I am thinking of furring out the wall or perhaps just running the vent pipe on the outside of the wall and boxing that part of the wall out.
But I cannot figure out what size vent pipe to use and where to put it in the line. I would like to add on beyond the toilet and put the vent pipe straight up behind the kitchen sink, but I have read that the toilet should be add the end of the drain. The toilet sits directly above the 3" horizontal drain and is connected by a sanitary tee. Originally it had a cleanout at the end of the line, but that's now where I would like to plumb in the kitchen sink and add a vertical vent up through the roof. Would that work? Could the tub and toilet wet vent through that? I could vent the washer and bathroom lav up and tie-in to the proposed main vent in the attic.
Perhaps I am over my head here. What is really throwing me is the placement of drains into the line, particularily which order they should be in. There are some other branches off the main 3" line that you will see in the diagram that I am trying to figure out how to utilize. I don't think the 1 1/2" line is viable anymore. We had to fix the slope of the 3" pipe (it was not properly supported and was actually sloping away from the sewer), so now the 1 1/2" is up between the joists. Besides it is coming straight out the top, which seems to be frowned upon.
Any thoughts would be very welcome. I'm going round and round inside my head trying to work it all out. Thanks! ps. We are in California