Hello, I have an existing utility tub and previously drained my washing machine direct into the utility tub. I would like to add in a washing machine standpipe in addition to the utility tub, but I am unsure about how to design. I thought about either of the designs within the attached (A and B), but I am concerned these designs will lead to sucking the trap dry. I believe tapping into the trap and running a separate line is probably the "best" design, but is there a design solution where I can maintain a single arm and avoid having to bust out the wall?
3.7 MB Views: 12