I am a DIY homeowner and would appreciate any comments about the attached picture in anticipation of cutting concrete for my basement bath remodel/addition. I pasted together sections from a couple of photos to try to show the whole arrangement. Most of the piping is 3" and meets the vent distance requirements that I see in the IRC book. The wet vent arrangement was suggested by my county plumbing inspector.
The slab is 5" thick and I have a basic diamond blade for my circular saw with which to score the surface but will be renting a jackhammer from my local big box store to do the heavy breaking.
The only thing that isn't shown (hidden behind some of the framing) is a downstream 4/4/2 wye drain connection for a nearby kitchenette, just before entry to the pump basin.
Any corrections or recommendations before the demolition begins would be great. Thanks!
-Adam in Atlanta