I'm finishing my basement, and plan to move my washer and dryer to a new location (against a wall that will be new construction). Right now the washer is draining into a utility sink. The sink is not vented, so apparently I can't use the existing drain. But the main drain stack that runs vertically down from my floor joists and through the concrete floor on bottom does have a little offshoot that is not being used (it is capped right now) so I was thinkning maybe I could install plumbing that would run to that offshoot, since the main stack is presumably vented. Will this work/will it be likely to satisfy building code? Where can I find a diagram of the plumbing components neccessary for proper washer/dryer hookups? Thanks for your help!