Unique island vent situation

[whackit]

I have a pretty unique situation for an island vent. I'm pretty hemmed in with structure and have only one way to really do it. Here is the rough layout (obviously not including vent extension and not to true scale). Basically I just kept the vent line draining and moved the vent connection from the loop to vertical. Does this work? I think it does but not sure. I'm concerned with code approval not just functionality. I'm under UPC.

Thanks!

 

[Tom Sawyer]

I have a pretty unique situation for an island vent. I'm pretty hemmed in with structure and have only one way to really do it. Here is the rough layout (obviously not including vent extension and not to true scale). Basically I just kept the vent line draining and moved the vent connection from the loop to vertical. Does this work? I think it does but not sure. I'm concerned with code approval not just functionality. I'm under UPC.

Thanks!

View attachment 24556

Save yourself the hassle and either waste stack vent it or stick an AAV on.

 

[Sponsor]

 

[whackit]

Save yourself the hassle and either waste stack vent it or stick an AAV on.

Sadly I can't stack vent it and I don't use AAVs.

 

[Reach4]

See https://terrylove.com/forums/showthread.php?43049-Island-Sink-Venting to see if it adds something for you.

 

[WJcandee]

Also, these guides may be helpful...

Page 13 of this (Bert Polk -- one of Terry's regularly-recommended guides):
Helpful Plumbing Hints for Residential Construction by Bert Polk Plumbing Inspector Lincoln County

Page 7 of this guide (Klickitat County -- nice explanations):
Plumbing-and-Trenching-for-Homeowners---2018 (klickitatcounty.org)
This stuff is UPC.

 

[Asktom]

I can't imagine LA would allow an AAV. If you have an inspector you can talk to, do so before you put it in. The NH 1/4 bend looks like a short sweep, it should be a medium sweep The ABS 1/4 below the combination will need to be a long sweep and you need a cleanout above or below the the san tee and another on the vent where it turns up.

 

[whackit]

I can't imagine LA would allow an AAV. If you have an inspector you can talk to, do so before you put it in. The NH 1/4 bend looks like a short sweep, it should be a medium sweep The ABS 1/4 below the combination will need to be a long sweep and you need a cleanout above or below the the san tee and another on the vent where it turns up.

Yes I know that the fittings are incorrect in terms of sweep. I was more just concerned if relative positions were acceptable.

 

[hj]

I do not see any problem with it. I have done it that way many times when there was room to make the connection to the vertical. Usually, that is not the case.