UPC section 707.4 is amended by adding a new subsection:
707.4.1 Back-to-Back. A cleanout shall be provided on a common vertical fixture drain or common vent serving two fixture traps that connect to a vertical drain at the same level. The cleanout shall be the same nominal pipe size as the drain serving the fixtures. Where the vertical drain is accessible through the trap opening, the cleanout may be eliminated.
40 SR 71
October 31, 2016
Official Publication of the State of Minnesota
Revisor of Statutes