I am working on new plumbing for an addition we just built. Does anyone see any issues? Do I need a clean-out at the end of the run?

I plan on using a 3" elbow in lieu of a combo to keep everything within the joists below. Haven't found anywhere stating that is an issue.

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    I think any time you can add a clean out it is worth the extra 20$ in plumbing and will save many times that if there is a plug that you can get to with a hand snake or larger auger. – Ed Beal Oct 17 '20 at 17:46

Looks reasonable, other than the (hopefully just a sketch issue) shower trap looking S rather than P on the sketch.

Presumably the drawing fails to show whatever constraints keep the shower connection from being more direct (i.e. from the sketch, seems like the Wye could just roll over to point more at the trap and simplify your connection, but I assume there are obstacles. If there are not obstacles, do that - it does not need to enter the 3" line facing up - 45 degrees up towards the shower would be dandy, 2 degrees up towards the shower would also be acceptable - it IS a wye. They do that. Taking the dry vent wye off the top is correct.)

  • I added an additional picture for context. Downslope is to the left. I can spin the p trap and modify the blocking but if it's okay to have it spun upstream and wrap into the wye that would be desirable. It's going to be a tight turn either way into that wye unless i spin the p trap 180 degrees and enter the 3" further downslope. – johnnyo8395 Oct 16 '20 at 18:10

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