Radius for a toilet waste direction change

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Chesterton

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I am renovating a bathroom and the preferred new location for the toilet is in a corner of the house on the main floor. The basement underneath is finished. Due to the XPS insulation, 2x4s, etc., in the basement, the new location is challenging to access. As you can see in the attached image, the drain for the toilet needs to flow right to left initially. However, the main waste line to which it will connect flows left to right. The floor is 14" above the main waste line.

When looking at it from above, I would like the toilet to be as close to the main waste line as possible--without moving it "upstream" on that main line. What recommendations do you have?

Thanks!
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John Gayewski

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I think youd rather put the wye farther downstream. Maybe not now but later you'll thank yourself.

You could try wye with a90 at at 45 then 45 through the floor. That might not be too bad
 
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