Bathtub rough in help needed

[wwhitney]

the order on the 3" line is wc then lav then shower.

OK, that's fine if the lav is properly dry vented, it can wet vent the WC and the shower with that order. Sorry to have misunderstood.

Cheers, Wayne

 

[Reach4]

Pictures (especially sketches and marked-up photos) are better than prose for describing plumbing.