We are adding a story-and-a-half addition, with baths both up&down-stairs. I have my wet wall from the downstairs bathroom in a location which allows for the upstairs toilet to flush directly into a vertical 3" pipe, which I will vent with a 3x3x2 wye positioned approx 4-6" below the closet flange. The wye will aim for the nearby upstairs wall housing a 2" vent pipe.
Are there reasons to not do it this way? I think the layout may work better this way, however, I don't know if it's proper. I'd just ask the inspector, but I don't want to look retarded if there is a major reason for not straight piping this toilet. My original option was to run it the normal way, with the flange connected to a closet bend connected to 3" pipe, connected to a low-heel 90 w/2" vent, connected to the vertical 3" stack. Thanks much.
Are there reasons to not do it this way? I think the layout may work better this way, however, I don't know if it's proper. I'd just ask the inspector, but I don't want to look retarded if there is a major reason for not straight piping this toilet. My original option was to run it the normal way, with the flange connected to a closet bend connected to 3" pipe, connected to a low-heel 90 w/2" vent, connected to the vertical 3" stack. Thanks much.