Transitioning from 4" below to 3" above, and need small offset (2 22's) in main soil stack to make room for kitchen remodel. There will be one toilet/bathroom upstairs that will drain from above, with separate vent. Thoughts on whether this would pass inspection in Seattle? I could use 22's with long stretch between if needed also. I just need to move this over 3" to make room for a structural post.
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