Kitchen & Laundry Re-Route Tampa. Here is an example of a kitchen and laundry re-route. We used sch.40 pipe and fittings. The customers cast iron sewer under slab was completely collapsed and could not be cleared. We ran the new piping from the kitchen into the garage and connected to a 3″ stack with the laundry and the laundry wash tub. This project spanned 3 days with 3 technicians. We replaced all concrete and had to core drill through the footer. We used a sleeve through the core drilled footer per code. We tied the sewer back into the existing sanitary sewer outside the foundation walls.