Gimper
New Member
I'm working on my finishing my basement and am adding a dual lav, and was hoping to get a check of my plan and confirmation of the cleanout requirement. I've looked at all of the dual lav threads that I could find, and couldn't find a whole lot on the cleanout requirements other than some where they say one is needed.
Attached is a drawing. The blue lines are what is existing, all in 2". I assume that the 2" line also vents the stool, shown stubbed out in green. The horizontal vent line at the top comes from the shower on the left, and runs off to the right and through the roof as a dry vent. I was planning on adding the lines in pink, all in 1.5" other than the 2" connections on the santees where they tie into the existing. (I'll use a long turn 90º, I just couldn't find a model for one)
I'm under the 2012 IPC, and in reading 708.7 on cleanout size, is the 1.5" trap connection sufficient as a cleanout as long as I have a SJ connection where it leaves the wall? If I put a 2" cleanout between the two santees, I don't think it would be very accessible being behind drawers.
If this doesn't work, what should I do? Should the left lav trap arm be 2" with a cleanout, then reduce to 1.5" for the SJ connection. (Since I can't seem to find a 2" -> 1.5" SJ fitting. I suppose I could do a spigot reducer in the 1/8th bend coming out of the wall?)
I think it was originally roughed in with the intention of a 48" or 60" single vanity, and of course going to a dual 84" makes it a bit more difficult. Also, any advice on offset from the sink centerline if coming out of the wall with a 45º? I'll play with the trap arm to see where it'll fit best if there's not a sort of standard of practice. I figure as long as it passes within a couple of inches of the tailpiece then I can align it using the trap.
Thanks!
-Kris
A long sweep 90 below the pink lav where the vertical turns to horizontal.
Attached is a drawing. The blue lines are what is existing, all in 2". I assume that the 2" line also vents the stool, shown stubbed out in green. The horizontal vent line at the top comes from the shower on the left, and runs off to the right and through the roof as a dry vent. I was planning on adding the lines in pink, all in 1.5" other than the 2" connections on the santees where they tie into the existing. (I'll use a long turn 90º, I just couldn't find a model for one)
I'm under the 2012 IPC, and in reading 708.7 on cleanout size, is the 1.5" trap connection sufficient as a cleanout as long as I have a SJ connection where it leaves the wall? If I put a 2" cleanout between the two santees, I don't think it would be very accessible being behind drawers.
If this doesn't work, what should I do? Should the left lav trap arm be 2" with a cleanout, then reduce to 1.5" for the SJ connection. (Since I can't seem to find a 2" -> 1.5" SJ fitting. I suppose I could do a spigot reducer in the 1/8th bend coming out of the wall?)
I think it was originally roughed in with the intention of a 48" or 60" single vanity, and of course going to a dual 84" makes it a bit more difficult. Also, any advice on offset from the sink centerline if coming out of the wall with a 45º? I'll play with the trap arm to see where it'll fit best if there's not a sort of standard of practice. I figure as long as it passes within a couple of inches of the tailpiece then I can align it using the trap.
Thanks!
-Kris
A long sweep 90 below the pink lav where the vertical turns to horizontal.