Shower and toilet vent

[Gil850]

Can I do this? See picture

 

[Jeff H Young]

I sure dont think so . tieing a drain into a trap arm never been allowed

 

[Sponsor]

 

[wwhitney]

Looks fine to me. The shower trap arm is dry vented, then the shower drain is used to wet vent the WC. Under the UPC the dry vent would need to be 2".

Cheers, Wayne