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Old 02-13-2016, 12:01 AM   #1
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Bathroom Sink Drain/Vent Question


Please see that two linked photos.

OPTION 1 was my original plan, but it makes my sink drain stub out location a little too high. I'd like the sink drain to stub out at the height between the two red circled lines on the stud in the right of the photo.

Is OPTION 2 acceptable? I don't have an extra sanitary tee on hand, but should I replace the wye with a sanitary tee? Should I replace that street 90 with a long turn 2" 90? Also, where would you recommend I install the bushing to reduce from 2" to 1.5" for the sink drain and trap?

The 2" pipe going to the left ties into a vertical 3" drain pipe for the toilet and also acts as a wet vent for the toilet. The 2" pipe going up leads into the attic and penetrates the roof as 3". The "C" between the two lines on the stud in the right side of the photo indicates the counter height (vessel sink).



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Old 02-13-2016, 07:59 AM   #2
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option 2 is acceptable, you can reduce either in the 90 or you could have reduced coming out of the Y..
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Old 02-13-2016, 08:23 AM   #3
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Should I swap out that 90 for a long turn 90 or does it not matter? My inspector didn't seem very concerned about long vs. short bends on anything under 3", but I'd hate to have to redo it. Better safe than sorry by going to a long 90?

Thanks again. You've been a life saver!!!
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Old 02-13-2016, 08:26 AM   #4
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nope your good....a long sweep will bring you way out of the wall...not needed there..
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Old 02-13-2016, 08:27 AM   #5
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didnt you want threads close to the wall too?
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