Adding Second Washer Box

[bigred]

What is the best way to add the drain pipe for a second washer box? Attached are images of where I'd like to put and my current plan.

 

[breplum]

Not enough room in that stud bay presentlly, so everything needs to be re-routed. You can cut in a tee, but. Off the top of my head vertical wet venting is limited to two fixture unit drains…and I don’t recall if washing machine drain is two f.u.