Cacher_Chick
Test, Don't Guess!
The drain must be routed in such a way that the vent riser will take off vertically, with no less than 45 degrees in pitch.
Proper vents last the life of the system, AAVs do not.
I'm sure you have good intentions but most home-owners, even ones who are handy, wont replace an AAV every few years... they will bury it in a wall and forget all about it.
But if the trap never siphons, then who cares
OT, but related to your job: Just for kicks, look up "bundling" in the National Electrical Code.
According to NY State Code,
905.3 Vent connection to drainage system. Every dry vent connecting to a horizontal drain shall connect above the centerline of the horizontal drain pipe.
I believe I have achieved this. I don't see anything else that would indicate that a flat vent is not allowed.
No problem, its going to the attic before termination to an AAV905.4 Vertical rise of vent. Every dry vent shall rise vertically to a minimum of 6 inches (152 mm) above the flood level rim of the highest trap or trapped fixture being vented.
905.5 Height above fixtures. A connection between a vent pipe and a vent stack or stack vent shall be made at least 6 inches (152 mm) above the flood level rim of the highest fixture served by the vent. Horizontal vent pipes forming branch vents, relief vents or loop vents shall be at least 6 inches (152 mm) above the flood level rim of the highest fixture served.
This is awkward, but...
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