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Unread 07-12-2007, 09:16 AM   #9
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Join Date: Apr 2006
Location: Socal
Posts: 81

I don't think I completely explained what I was trying to do. I will be removing the existing 1.5"x1.5"x2" tee. Then, I will extend the 1.5" vent line down through the 2x4 and subfloor. This is where my question #1 came in. I would need to drill a 1.5" dia hole in the 2x4 frame in order to extend it down underneath the subfloor. Next, I would install a new 1.5"x1.5"x2" tee and a new trap (all under the subfloor) for my new shower. Hope that makes sense.

As for question #2 two, are you saying that it would be OK to split the 2" drain to two separate 1.5" drains for my sinks as long as I vent prior to entering the waste stack?
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