Plumbing Question

[Carmine]

Adding a master suite to my new-to-me home.
It's a one-story ranch with a basement.
(The one I was always working on was finally completed and sold.)

The photo below shows my plumbing plan. I would use a Wye vs a Tee, but I'm not finding Wye's with anything more than a toilet-size connection, whereas a Tee gets me the toilet and bathtub in one piece.

In the drawing, the existing drain is shown in black. The new proposed is blue. Will this work, and will it be to code? Thanks.

 

[ricks_RR]

this site is getting shitty

 

[Timothy]

All toilets vent thru the stack that part should be ok. However the issue will probably be with the bathtub and or sinks. They will probably need to vented with a separate line connected at a point above the highest plumbing fixture (sink, shower or tub) in the house and then out of the house. I would advise consulting your plumbing inspector in your area. They will have the final say either way.