Toilet vent question

Looks like the only way I can vent my toilet is through the short wall I will build beside the toilet to close it off a bit from the vanities. (The wall behind it will be a pocket door and the wall on the other side is an external wall with major header at top.) The wall won't be built until after the underground work is approved. Two questions:

1) To vent vertically through the wall, can you use a tee fitting and run the two inch pipe vertically, or should a wye be used?

2) Any unique tricks to building a wall around a vertical 2" pipe?

Thank you,

John

1). You cannot come off a horizotal branch using a tee for vent. It must be a wye, and it must be rolled up 45º, so that the vent takeoff is above the waterline, so to speak.

2) 2" pipe fits nicely inside 2X4 walls.

hold up here. You can use a san tee horizontally if the branch is dry (nothing else drains into it) at least under the IPC code anyway. The vent only needs to be 1 1/2" also and furthermore if you are plumbing under IPC code they vent can be an unlimited distance from the toilet.