I am getting ready to finish my basement and we want to move the washer and dryer down to the basement. My idea is to run the drain and vent inside a false wall. What I need to know is it ok to do this by code and should I use 2x4 or 2x6 for the wall. I have attached a crude drawing of my idea. The red line is the new drain and vent that would be inside the new wall. Also does anyone have suggestions on framing the wall to make it easier to go around the corner? I may also like to put in a utility sink if I can.
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