Help with plumbing a drain for a new shower? (with example picture)
I believe I found the answer to my own question at this link: when to use a wye or sanitary T. It says " When connecting any vertical waste drop to a horizontal run the proper way to do it is to either use a Wye &amp; 1/8 bend (45 deg), or a Sanitary combo. A sanitary combo is a combination Wye &amp; 1/8 bend already made in one fitting."



I believe this also addresses the concerns I had with the venting.