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Old 02-01-2015, 12:03 PM   #1
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Basement Laundry Room DWV


Hello everyone. So I have moved onto the basement projects and the first order of business is the laundry room. I think I have the right idea, just looking for some reassurance. Any comments/critiques appreciated.

Note that the vent will tie in to a bathroom group on a separate floor.
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Old 02-01-2015, 12:20 PM   #2
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Your pump should discharge to a 4 inch drain if you have one. The DFU load is far to great for a 2 inch drain.
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Old 02-01-2015, 12:54 PM   #3
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Thanks for the quick reply. I guess I assumed since the pump requires a 1.5" discharge, a gravity drain 2" would be more than enough. Unfortunaly the connection sticking out of the wall is 2" (just beyond that is the 4" soil stack) and the pipe is buried in concrete. Is there anyway to make this setup work with a 2" drain to work with??

I dont know if it matters, but the sink will not be discharged into by any appliances. Just water from the tap.
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Old 02-01-2015, 01:24 PM   #4
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What if you drain the washer into the ejector pump also. Then the 2" is all ejector pump discharge pipe and gravity drain starts at your 4".
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Old 02-01-2015, 01:56 PM   #5
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Quote:
Originally Posted by jogr View Post
What if you drain the washer into the ejector pump also.
That's not a bad idea actually, but I was really hoping to gravity drain the washer to prevent the washer from overflowing into the basement if the ejector pump crapped out.

That made me think that I could just make a separate branch into the 4" stack (above the cinderblock wall)...it wouldn't be the most efficient use of PVC, but it would work...
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Old 02-01-2015, 02:14 PM   #6
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Isn't there a 4 inch clean out plug where it go's out?
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Old 02-01-2015, 02:36 PM   #7
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Quote:
Originally Posted by Ghostmaker View Post
Isn't there a 4 inch clean out plug where it go's out?
I live in a split level home and the area where it goes out is buried. The only way to make another connection would be to cut into the main stack. Do you see any other problems with this layout?
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Old 02-02-2015, 02:20 PM   #8
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I updated the layout with the changes.
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Old 02-02-2015, 05:50 PM   #9
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just make sure where the washer vent and sink vent join your 6 inches abovve the highest flood level rim.
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Old 02-03-2015, 06:06 AM   #10
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Yes that horizontal connection is about 20" above the standpipe.
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