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Old 03-10-2010, 02:22 AM   #1
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Default Basement plumbing help

Hello , I'm putting in new plumbing in my basement under cement slab .I have Attached drawing. Does this look right or will the wet vent from upstairs or the washing machine siphon out the floor drain ? Can you see any changes that need to be made ? Thanks for your help
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Old 03-10-2010, 11:19 PM   #2
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You run a very big risk of having trouble with the floor drain due to the washing machine draining down the vent for the floor drain.

I would move the attachment point for the washing machine drain as far away from the floor drain and adding a dedicated vent between them. Bring this vent up above the drain arm for the washing machine and tie it back into the wet vent for the upstairs bathroom.
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Old 03-11-2010, 06:17 AM   #3
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No wet venting here in Kentucky. Every drain must have a vent, no combination waste/vent.
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