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Old 01-20-2008, 11:32 AM   #16
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Two drains, one trap?


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Originally Posted by tigerbalm2424 View Post
This work?



ok, if I understand whats going on , my venting in this diagram wont work, right. Or would this work?
Did not see this one you made, this will be fine providing there is no sink on the line coming from the upper floor.

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Old 01-20-2008, 11:36 AM   #17
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Two drains, one trap?


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First, I want to say thanks for the continued help with this!

Ok, so lets do it this way. Here is a diagram of what I can see for the plumbing in this area of the house. The upstairs is finished so I cant see whats in the wall. I went outside and the only vent stack coming through the roof in this area looks to be 3" or 4" diameter.

All I need to do to finish the bathroom is figure out the sink drain. If I understand Ron correctly, this red would be what I would need to do to add a back to back sink(correct me if I am wrong). Is there any way to do the back to back sink without needing to tie back in above the upstairs sink drain?

Thanks again guys!


Works for me, I'd rather see you replace that lower tee with a wye, will make it easier to clean the line out if needed, a tee can cause a sanke to gp up even you you don't want it to, wye will make it go in the direction intended.
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Old 01-20-2008, 11:41 AM   #18
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Two drains, one trap?


It looks like the pipe on the right is the vent for the lower tub/shower . If it is you could tie your new vent back into it above the bathroom ceiling (space permitting), then you wouldn't have to mess with the upstairs bathroom.
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Old 01-20-2008, 11:43 AM   #19
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Two drains, one trap?


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It looks like the pipe on the right is the vent for the lower tub/shower . If it is you could tie your new vent back into it above the bathroom ceiling (space permitting), then you wouldn't have to mess with the upstairs bathroom.
Yes you could do that if there is room inside the will past the toilet stack, or ceiling if there is room.
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Old 01-20-2008, 11:46 AM   #20
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Two drains, one trap?


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Yes you could do that if there is room inside the will past the toilet stack, or ceiling if there is room.
So, like this?

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Old 01-20-2008, 11:51 AM   #21
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Two drains, one trap?


Works for me
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Old 01-20-2008, 11:53 AM   #22
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Two drains, one trap?


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Works for me
Thanks both of you guys!! Time for a HD run!

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