I am looking to add a sink to my garage, and am looking for some advise on plumbing the drain. I have already had the water supply lines added, and need to add the drain and p-trap. In the picture you can see the existing washer and laundry sink drains on the other side of the wall. I was hoping to just tap into the drain/vent, just above the sink drain (which goes to the right, the washer drain is below it to the left), but not sure if this is feasible, or good practice. I think the P-trap would be too high, as the garage floor is about 6" lower than the laundry floor. Any ideas on how to best accomplish this?
