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Old 10-16-2012, 11:36 AM   #1
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Plumbing for Utility Sink in Garage


I want to add a wash sink inside my garage. On the opposite side of the wall where I want to add the wash sink there is an inside bathroom sink. See two different diagrams below for existing setup. What I want to do will be in my next post. The diagrams are not to scale and some of the shown drain lines are not straight.
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Old 10-16-2012, 11:39 AM   #2
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Plumbing for Utility Sink in Garage


Would it be OK to just cut in a San-T at position "A" and use this to pick up the utility sink.

AAV's are allowed in my jurisdiction to vent it if needed??
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Last edited by hammerlane; 10-22-2012 at 08:11 AM.
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Old 10-16-2012, 12:02 PM   #3
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Plumbing for Utility Sink in Garage


if you are talking about one of those laundry tub sinks, 18 inches is a little high for one of those. we always roughed those in at around 12-14 because they are so deep. what you propose would work.
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Old 10-16-2012, 12:43 PM   #4
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Plumbing for Utility Sink in Garage


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Originally Posted by DannyT View Post
if you are talking about one of those laundry tub sinks, 18 inches is a little high for one of those. we always roughed those in at around 12-14 because they are so deep. what you propose would work.
Thanks.

From the garage floor to the top of the bottom plate is just under 13 inches. So I could probably cut that San-T in so that the tap is at about 15"

In your opinion, is there a need for an AAV? Or could I just have the vent for the bath sink vent the utility sink?
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Old 10-16-2012, 04:40 PM   #5
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Plumbing for Utility Sink in Garage


With the use of an AAv for venting, This is how the install would look after the San-T at position "A". Refer to diagram in post #2.
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Old 10-17-2012, 07:11 PM   #6
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Plumbing for Utility Sink in Garage


Had someone say to take the "PROPOSED" drawing in post #2 and modify it to this:

Said to take San-T at position "A", turn it to the left, use a Wye on its back(fitting "F") with a Street-90(fitting "G"). The Street-90 would pick up the slop sink.
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Last edited by hammerlane; 10-17-2012 at 07:15 PM.
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Old 10-17-2012, 09:29 PM   #7
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Plumbing for Utility Sink in Garage


Quote:
Originally Posted by hammerlane View Post
Had someone say to take the "PROPOSED" drawing in post #2 and modify it to this:

Said to take San-T at position "A", turn it to the left, use a Wye on its back(fitting "F") with a Street-90(fitting "G"). The Street-90 would pick up the slop sink.
I like your modification. That would be legal here.

Nice work.
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Old 10-17-2012, 09:59 PM   #8
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Plumbing for Utility Sink in Garage


Quote:
Originally Posted by Alan View Post
I like your modification. That would be legal here.
Would not this configuration work with the use of an AAV after the stub out from
San-T fitting "A"???
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Last edited by hammerlane; 10-22-2012 at 08:11 AM.
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Old 10-17-2012, 10:23 PM   #9
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Plumbing for Utility Sink in Garage


Quote:
Originally Posted by hammerlane View Post
Would not this configuration work with the use of an AAV after the stub out from
San-T fitting "A"???
It would. I prefer conventional venting methods, however.
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Old 10-17-2012, 10:40 PM   #10
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Plumbing for Utility Sink in Garage


Quote:
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It would. I prefer conventional venting methods, however.
I understand. Thanks.

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