Does AAV have to be directly inline with through-floor drain?

[Sokolq55]

Does an AAV have to sit directly in vertical line with a drain going through floor or can the vent be routed a bit to the side? Current through floor drain is off-center below sink and if I place an AAV directly over the the drain, I can't really go up much before hitting the bottom of the sink. If I want my AAV to be at least above the sink strainer, I need to route the AAV such that i will no longer be in a straight vertical line with the existing floor drain location. Is this possible or should I reroute my entire drain location to a place where the AAV stack can be properly high enough? Thank you.

 

[Reach4]

You can route the vent to the AAV at up to 45 degrees off of plumb for the first 6 inches above the floor. Higher than that can be horizontal but sloped to drain the water -- maybe 1/4 inch per foot or more with 2 inch pipe.. However the AAV itself should be within 15 degrees of plumb.

Floor drains are special, and it seems to me that they are not required to be vented in the same way a sink drain would need to be. See what you make of page 16 of https://www.iccsafe.org/wp-content/uploads/20-18927_GR_2021_Plumbing_Venting_Brochure.pdf