Wet vent question

[Branimal]

I am plumbing a bathroom in a tight space. Can I wet vent the toilet and shower as shown via the 2" dry vent connected to the lavatory sanitary tee as shown. Lavatory santee will be standard height - 18" off flinished floor. Or will the shower flow pull the water out of the lav's trap?

(Scrap pipe was used to connect the fittings. Distance's b/w fittings will follow venting rules)

 

[Reach4]

Looks good to me. The lav vent will prevent the shower and toilet from pulling water out of the lav's trap.

 

[Sponsor]

 

[Branimal]

Looks good to me. The lav vent will prevent the shower and toilet from pulling water out of the lav's trap.

Is it acceptable to replace the sanitary tee in the picture with a 2" double fixture fitting. I'd like to pick up the kitchen sink on the wall opposite of the bathroom.

There will be NO garbage disposal on the kitchen sink. The drainage pipe expands from 2" to 3" in a fairly short distance.

See picture.

 

[Reach4]

Is it acceptable to replace the sanitary tee in the picture with a 2" double fixture fitting. I'd like to pick up the kitchen sink on the wall opposite of the bathroom.

Not if you want to wet-vent the shower and toilet with the lavatory. A horizontally wet-vented bath group must not carry kitchen waste.

 

[Branimal]

Thanks.

My issue is i'm try to get all the plumbing into one joist bay. Its rough sawn lumber and the space b/w the joists is 13".

I can dry vent the shower. But I'm not sure how to dry vent the toilet with the given space constraints.

 

[wwhitney]

Is it acceptable to replace the sanitary tee in the picture with a 2" double fixture fitting. I'd like to pick up the kitchen sink on the wall opposite of the bathroom.

Since that would spoil wet venting of the rest of the bathroom group, just run the kitchen sink drain separately, it can wye into the bathroom branch drain after all the bathroom fixtures. If you want to share the dry vent between the lav and the kitchen sink, they only need to be separate to an elevation 6" above both fixture flood rims, then they can wye together.

Cheers, Wayne

 

[Branimal]

Since that would spoil wet venting of the rest of the bathroom group, just run the kitchen sink drain separately, it can wye into the bathroom branch drain after all the bathroom fixtures. If you want to share the dry vent between the lav and the kitchen sink, they only need to be separate to an elevation 6" above both fixture flood rims, then they can wye together.

Cheers, Wayne

That works. I could run the kitchen sink drain in the wall and drop into the bathroom drain in the joist bay after the bathroom plumbing. Thanks!!