ArtStudent
New Member
Hi Terry, if the vertical pipe is a 3 inch stack going to the roof, and an upstairs bathroom drops into the same main stack, is what I have designed here up to code and/or functional? originally it was just this one toilet on the ground floor, with a 2 inch vent extending up to the roof, that 2 inch stack was cast-iron and is rusted closed so I’m replacing it with a three, but wondering if it’s OK for the drainage upstairs to pass behind the toilet if it makes sense way out to the sewer.
* for the 90 I have a long wide sweep
* for the 90 I have a long wide sweep