Waste line connection

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GrumpyD

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Hello
I need to connect a rear outlet toilet on a slab to this 30-year-old array. The height of the toilet drain is indicated by the pvc in the last pic (stuck through just for this.) Unfortunately, when I did the original work I had no room at all to have the clean-out any further away from the stack.

Are there options other than raising of the toilet, as that creates some problems?

Context: my place, built myself, structures, systems, etc. I fabricate, restore, repair in a pretty wide array of materials.
We haven't a plumbing inspector anymore.

Last inspector refused to inspect my work because "You annoyed me with code things that I never heard of, why would you care about code? And, really it is so far away. I don't want to get my car all dusty"
It was a 20 minute drive, some on unpaved public roads. :oops:

Also- anyone have preferred rear outlet toilets and connections (gasket, etc)? The one I got ages ago was murdered.

Thanks so much for any help with this
 

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wwhitney

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Are we to assume that in your photos the top of the block wall is a consistent elevation? If so, how far is it horizontally from the WC stub-through to the stack?

Anyway, clearly the configuration in your first two photos could be redone to allow your new WC drain to connect to the stack, or connect horizontally to the building drain. For the first option, you could replace the elbows with street elbows, and you could change the wye to a san-tee. For the second option, you could replace the cleanout fitting with a LT90 and then use another horizontal upright wye for the cleanout, with the cleanout fitting in the branch inlet.

Cheers, Wayne
 

Tuttles Revenge

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The plan is to build the floor up to the height needed to match the drain height?

There are basically 2 styles of floor mounted rear discharge toilets. The american style where the drain height is roughly 4" above your finished floor or the european style which has a discharge at roughly 8" above the rough floor. The american version uses a foam gasket to seal against a typical closet flange. The european style uses a rubber gasket to slide the toilet socket into.
 

wwhitney

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There are basically 2 styles of floor mounted rear discharge toilets. The american style where the drain height is roughly 4" above your finished floor or the european style which has a discharge at roughly 8" above the rough floor. The american version uses a foam gasket to seal against a typical closet flange. The european style uses a rubber gasket to slide the toilet socket into.
Both styles have the full siphon trap internal to the bowl, and don't require that the drain turn down immediately within the wall, like wall hung toilets often do?

Cheers, Wayne
 

Jeff H Young

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rough in is too high. i guess when you say toilet on a slab the slab is yet to be poured that works youll need a wall as well
 

Tuttles Revenge

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Both styles have the full siphon trap internal to the bowl, and don't require that the drain turn down immediately within the wall, like wall hung toilets often do?

Cheers, Wayne
I looked at documentation for both variety and can't find any indication that an immediate downward pipe is required like the wall supported toilets do. I've installed a handful with straight horizontal runs for attic remodels and have not had any issues with them. *that I know of*.. But the customers who we've installed them for are clients of a particular remodel contractor that I've been working with since '06 and some of these clients we've done remodels for multiple times, so I definitely would have heard about it.

The first time I encountered these was a homeowner provided toilet that I couldn't even install on a 12" rough in. I had to move the toilet flange to 9".
 

GrumpyD

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Well, thank you all for your swift responses.
I should have noted: The sill, (the perimeter of the house) in the 3 pics is at the same height. The toilet's waste line height is 4 oc up from the poured slab in the adjacent shop (so the slab is a bit lower then mortar under top course of cinderblock.) Pipe hole in cinderblock is 6 1/2' feet from stack. The toilet is going against the other side of the 2" x 6" framing in that picture.

Well laid out options and good information!

I hadn't even considered that euro toilets might be an option in the US. I'll look into the available models, hopefully sparing the need to clear out the area around the stack.

Thanks so much,
D
 
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Tuttles Revenge

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Duravit is the brand I use a lot simply because they're readily available in my area. I've used them for scenarios where I've got to install plumbing in attics where I can't cut the floor joists, or hooking up to old wall hung carrier toilets, or installing them on odd rough ins where a 10" toilet won't fit.

This is one example.
 

Jeff H Young

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Some real good info Tuttles! I am not up to date on a lot of these options for oddbal rough-in. Duravit has possibilities where others might not
 
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