Shower/Laundry Wet Vent Question

[Eldudarino]

Longtime lurker, first time poster. I would like to start by thanking everyone for the great information on this forum. It has helped me successfully get through a pretty big project. I was doing fine until it came to this one situation.

I am adding a laundry/bath to an addition that is extending out into a garage. The concrete has been cut open and all of this will be buried and covered over. I will have a 36" shower next to a stacked washer/dryer against an external wall in a single story dwelling. The easiest thing to do is have the washer/dryer and the shower share a vent as shown the drawing. I could add another vent for the shower, but not easily.

In short, a 1.5" vent will serve first a 2" washer stand and then a 2" shower drain downstream. I can vary the trap arm length of my shower, I believe it has to be greater than 18".

Thanks in advance.

 

[Terry]

We can't wet vent shower with washers using UPC code.
I would vent them separately and tie them together at six inches above the washer standpipe.

 

[Sponsor]

 

[Eldudarino]

Thank you so much for the quick reply. I have had some lucky breaks elsewhere in the project, this evens things out!