Building an ADA bathroom. To get the proper 1/4' slope down to my septic I need the main waste line to be no more than 12" below the finished floor. Looking to use a 3" combo sweep tee athe the toilet wall (picking up the sink up hill). Could this work with the vent just up hill from the horizontal combo sweep tee if it's under 6ft? Any other ideas here? Thanks!



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Using terms like offset closet flange, close to 12”, and long sweep tee make me question your ability to install an ADA bathroom, these types of designs have certain very strict clearances depending on what type of Ada bathroom it is your toilet must be 16” to 19” from the short side wall as well as clearances for the pedestrian

Perhaps you should hire a contractor

Around here no matter what radius the sweep a tee on its back or side will not pass inspection

i would use a 10 invch rough elongated toilet instead of an offset flange.
if the tee you are talking about is a "combo" (wye and 1/8 bend) then you are fine.

The horizontal long sweep wye brings the toilet flange about 15" o.c. from the back wall.

14” rough in toilet will work
Aim for 17 3/4” to 18” off finished close side wall
Toilet handle must be on the wider side of the stall/wall



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Thanks yeah I'm doing 18" from close wall. Yes handle on sink side. I just need to make sure that there is enough space for the 5' turn radius. Bathroom is going to be 6'4 x 7'. Thanks for your advice!

kudos for the 'big' space

the MINIMUM is:




It is a very good thing to EXCEED the minimum code as you are doing.

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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638

look at a Toto unifit toilet. Toto makes the best toilets. (in my opinion)

don't be intimidated by the adapter. it's really quite easy to install.

[www.totousa.com]

Thanks. Yeah I like Toto! Especially the Toto washlet!! Anything else is uncivilized!