2nd floor powder room directly over exist. basement full bath
I'm in the process of installing a 2nd floor powder room directly over an existing full bath in my basement which I am also in the process of a gut/remodel as well. The powder room will take the place of an existing closet, so I need to run all new plumbing to service the toilet and sink. I sketched up a diagram of the waste-vent system in CAD to help illustrate what I'm trying to run. All horizontal drains & vents will be sloped at least 1/4" per. foot.