I want to put in a shop sink. I have a good spot on the wall that the garage shares with the house. I have heat so low temps are no prob.
What I need help with is how to drain it. I have a drain line from a bathroom on the first floor but slope with be a problem the most I could get would be 1/8" per foot and that will be hard. Also I am not sure I can cut the 4" drain line. The plan would be to use a AAV for venting. Thoughts???
Here is where I would cut in the drain line. The big one on the left is the toilet the smaller one on the right is the sink. I would have to cut in on the horizontal run between the sink and toilet.
Here is the run the drain line would make.
the sink will be on the other side of this wall.
What I need help with is how to drain it. I have a drain line from a bathroom on the first floor but slope with be a problem the most I could get would be 1/8" per foot and that will be hard. Also I am not sure I can cut the 4" drain line. The plan would be to use a AAV for venting. Thoughts???
Here is where I would cut in the drain line. The big one on the left is the toilet the smaller one on the right is the sink. I would have to cut in on the horizontal run between the sink and toilet.
Here is the run the drain line would make.
the sink will be on the other side of this wall.

