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Thanks Terry. I omitted the vents from the diagram. We have a vent on the bath trap arm. Unless it was misunderstood, the inspector is requiring us to add a vent between the toilet and where the toilet and tub drains join. I didn't have that originally. To restate part of your answer to...

I'm in Seattle, which adopted 2012 UPC. My drain/waste lines for bathroom are on horizontal branches from the main stack. I have less than 135-degrees of bends, but the toilet terminates a total of about 7' from the main stack, and the tub more than 5' where it branches from toilet drain line...