I am looking to relocate a kitchen sink. I would like to run the new drain for the sink into the same drain as the one used by the washing machine. I am looking at this because this is a condo and the the pipes are in a concrete slab. Therefore, I think it will be a lot easier to see if I can share the drain rather than trying open the slab and move the drain.
Is sharing the drain allowed in Mass? Are there any other issues or considerations that I should be thinking about?