I'm getting my plumbing feet wet with a laundry room remodel. I have the pipes assembled in this picture but not glued yet. The left T is a 1 1/2" vent which ties into a 2" vent in the ceiling. The 3" down is the start of a stack that will have a master bath added to it from upstairs. I had to extend the length of my drop pipe from 8" to 24" as I noticed code says 18" minimum. Thanks for your feedback!
Happy Thanksgiving to all!
Happy Thanksgiving to all!