_20190125_181711 by geoffhazel posted Jan 25, 2019 at 6:26 PM The plan is to add a small studio to the garage. I have a 2"drain sticking up (label DRAIN) that's been inspected, a 2" vent that goes through the roof and another vent that needs to get hooked in from a basement sink ("vent from below"). Today I'm adding two sinks on "loops" (a and b). I planned on connecting the drains to the drain that goes into the floor, and then running an upper "run" for venting that picks up a connection from the floor drain , turns the corner, and then picks up the other vent before heading up and out. Where loop B connects to the other longer run, I plan to use a long sweep tee. The vent run above would be a sanitary tee. What I'm wondering is , first off, in general how does this look? Second, do I need any cleanouts? If I did, I don't know where I'd put them. The sink on loop A is behind a run of cabinets. The sink on loop b is in the wall behind a vanity. Third, where two vents meet horizontally from different directions before heading up through the roof, is there a special T I should use? I suppose I could stack two tees so they each have their own sweep. PS: shower and toilet are in but not part of this diagram. they have been approved to use the "wet vent" that's going to accept the output of loops A and B and then extend up to the Vent "loop"