DWV Layout

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bbstnr

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Hi! I'm redoing the dwv in the upstairs of the house after I found that the cast iron was rotted so bad it was basically a trough. Anyway, This is how I have the system dry fitted right now. I have a few questions, 1. Will the tub be correctly wet vented if I leave it the way it is now? I know that's how is was done but I'm not sure. 2. They had a side-hub inlet 90 right at the closet elbow before but I'd like to run it under the joist to a wye. Is that ok? 3. for the lav vent do I run the sanitary tee teh way in the photo or opposite? 4. Is there anything else I should change/be concerned about? Thanks for any help! Pics are in the link

https://flic.kr/s/aHsk5E6Nyh
 

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hj

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I really cannot figure out WHAT the photos show or what you are trying to do. But one thing is sure, I cannot imagine ANY toilet connection needing FOUR elbows stacked on top of each other. Side inlet 1/4 bends, because they do NOT have a sweep are usually confined for vent use, not drainage. When you use one for a toilet connection, and then connect a drain to it, you are creating a "tapped closet bend" and they have been prohibited by codes since at least the 1950s.
 

bbstnr

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hj, thanks for the reply. It used to have a side inlet, I do not want to use one, for the reasons you stated. That abs is the old sink/tub drains. I was going to run it down to the 1 1/2 inlet on the wye. How should I run the closet bend to meet the pipe where it sits? It had that many bends before with the cast iron. Should I angle the long turn 90 and up to a 45 to vertical to meet the toilet flange? Also, the sanitary tee is for the dry vent to the roof.
 
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