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diyfun
06-14-2011, 06:09 PM
Please refer to the picture attached. The red color part is what I plan to add in. is it good without a separated vent? I remember we can have a wet vent within 5'. But don't know if that rule can apply to my case?

cwhyu2
06-14-2011, 06:13 PM
Needs to be vented.

diyfun
06-14-2011, 06:29 PM
Needs to be vented.

Somebody said my washing machine vent is optional because it is within 5' from the waste stack. So I thought that rule can be used in my new branch.

Ok can I join the new vent with that washing machine vent, like the red dot line in the attached picture?

cwhyu2
06-14-2011, 06:34 PM
That looks fine to me.

hj
06-14-2011, 07:11 PM
The problem is NOT the distance from a vent, it is that the washing machine drain is flowing past the sink drain, so the sink drain DOES need a vent.

diyfun
06-14-2011, 07:23 PM
The problem is NOT the distance from a vent, it is that the washing machine drain is flowing past the sink drain, so the sink drain DOES need a vent.

I see now. A vent will be there for sure. Thank you for your clear explanation.