Was this done correctly? venting questions.

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Rojocapo

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Hi Everyone! first post here, i have a questions about a bathroom waste line that is in progress.

A little bit of info first:

* I am located in New Jersey.
* I know there is at least one vent out the roof from other bathroom.
* AAV will be installed (I know it's not liked but it needs to be) Behind above vanity about 3 feet or so.
* AAV is legal in my state and will be easily accessible behind an unfinished wall
* PVC sizes are 4 inch for toilet, 2 inch for vanity and shower.
* distance between vanity and shower is less then 6 feet.

So my questions.

1) Is the AAV planned, enough to cover the 3 fixtures? Was told it was ok but would like to be 100% certain.
2) My concern is that there is a bit of elevation for the shower drain, will this AAV work on this fixture?
3) If not does this shower need it's own vent?
4) If needed can i have another AAV on the line, will have multiple be a problem?

Thank you for your time to read, please if any questions needed ask away.

https://i.imgur.com/yXhDeQN.jpg
https://i.imgur.com/kirVhQU.jpg
https://i.imgur.com/d3GlvvM.jpg
https://i.imgur.com/TYbPL4i.jpg

If I need a secondary vent/aav it this spot acceptable? https://i.imgur.com/DmVkWZR.jpg
 
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Terry

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The shower needs a vent before tying into the toilet line. You have an S-Trap there, not legal anywhere.
 

Rojocapo

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Thank you, yes that was what i was afraid of, toilet pulling the water from the trap. Can this work for a second aav? will this be a problem? https://i.imgur.com/qGgksGP.jpg

Planning on having 2 aav's on, is the one near the shower enough? or having both is better?
 
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