Adding 2nd floor bathroom, basic layout

[Red91sc]

Attached is the basic layout I'm looking at adding to my second floor. Before I went into more detail with fitting types, sizes, and distances I wanted to make sure the basic layout I have is appropriate.

For reference this area is roughly 8' x 7'.

 

[Terry]

The vent for the shower and the toilet goes straight up in the end wall for the shower and the lav has its vent?
You have the shower trap arm over the toilet which is correct.
That would work.

 

[Sponsor]

 

[Red91sc]

The vent for the shower and the toilet goes straight up in the end wall for the shower and the lav has its vent?
You have the shower trap arm over the toilet which is correct.
That would work.

Yes the vent goes straight up, there will be a wall there dividing the shower and toilet. I was also avoiding having to run any 3" thru the joist by doing this. The vent for the lav with go up inside the other wall and will carry overhead and connect back to the main vent line.

I know it's probably preferred to have the toilet as the last connection. Would it be OK if I had the toilet above the shower connection?

 

[Stuff]

Unless you have a low ceiling nothing sticks out for the arrangement. I've found this is a good overview for bathroom layout issues to review: http://starcraftcustombuilders.com/bath.design.rules.htm

 

[Terry]

The toilet has to be below the shower.

 

[James Henry]

I don't think this is right, the lav is draining into the shower trap arm.

 

[Reach4]

I don't think this is right, the lav is draining into the shower trap arm.

Unless you deem that the lav is wet venting the shower.

 

[James Henry]

Unless you deem that the lav is wet venting the shower.[/QU

I reckon.

 

[Red91sc]

Here's the 3D layout I have mostly completed. Toilet is 3", shower 2", and sink is 1.5"

 

[Reach4]

Works nicely IMO. Lav is vented already.

 

[Red91sc]

Works nicely IMO. Lav is vented already.

Do you mean the lav is already vented from the 3" stack and I don't need the vent going up? I thought the furthest you could go with 1.5" was 3'-6"...

 

[Terry]

The lav does need it's own vent which is shown in your drawing.
The toilet and shower are vented together. Two vents for that bathroom.

 

[Red91sc]

The lav does need it's own vent which is shown in your drawing.
The toilet and shower are vented together. Two vents for that bathroom.

Just making sure, so from what you see everything looks good?

 

[Red91sc]

Is the double wye OK? One side will have the sink, the other side the toilet, do these have issues with getting clogged?

I can you a separate wye for each it just consumes more vertical space below as well as adds an additional 90 off the toilet...