Hi. A few questions (tried to change the title):
This question has nothing to do with the sketch and probably isn't that simple but here goes: Can I have the following drains all tie into a 30' long, horizontal 2inch "main" before this 2inch pipe connects to the 3" stack running to the basement? Or should I upsize to 3" where one of these ties in (which one)?
2" washing machine (farthest - 30' from 3" stack)
1.5" laundry sink
1.5" lav (middle distance - 15' from 3" stack)
1.5" lav -2nd one
1.5" tub (closest - 10' from 3" stack)
In the iso sketch below the 1.5" bathroom lav drain (yelllow) runs HORIZONTAL the whole length until the end where it drops down ( via 90) and then connects onto a 3"x 1.5" WYE (GREEN) via a 1/6. This green WYE connects to the vent top of the 3" Sani TEE from the toilet drain (purple). I gave the lav its own 1.5" vent. I assume this Green WYE becomes a wet vent in this setup if I understand wet vents correctly. Above this 3" green wet vent section I reduced it to a 2" dry vent to roof.
Will this work? sorry - got double image and can't delete bottom one