Shop bathroom with washer

[Avdey1984]

Hey guys, I’m adding a new bathroom with washer and dryer in my shop. I’ve attached the drawing. Washer first then vanity then toilet last is shower. Where should I place wet venting. I was thinking at the lav? But not sure if I need to add one more where the shower at. Thanks for your help

 

[GReynolds929]

If on UPC you cannot wet vent other fixtures with the bathroom group. washing machine would need it's own vent.

 

[Sponsor]

 

[Avdey1984]

Okay so I could vent the washer and lav separately? I guess I had a question vent at lav is enough for the toilet not to siphon the shower cause it’s last.

 

[John Gayewski]

Washer needs to be the most downstream connection and will have it's own vent

The most upstream fixture in the bathroom group needs a dry vent. So you have two vents that tie together and pennatrate the roof with a boot. Best practice would be (from lowest to highest) washer, toilet, shower, lav.

 

[Avdey1984]

Mock up. Anything wrong with this ?

 

[John Gayewski]

Mock up. Anything wrong with this ?

Hard to say what you have drawn at the top and bottom of the system. You have nothing labeled.

 

[Avdey1984]

picture didnt go though last time of this mock up.

 

[John Gayewski]

Yeah that's what I was afraid of. Your washer needs to connect before the bathroom not after. The shower is also unvented.

 

[Avdey1984]

Will this set up not work?

 

[Avdey1984]

would this work better?

 

[John Gayewski]

Yep. If you wanted the shower back where it was you could use a 2" wye and split off from the lavatory drain. Also you don't need that extra 3" pipe from the toilet to the lav, that can be 2".

But what you have is good.