Traps shall have a liquid seal not less than two inches (2") (51 mm) and not more than four inches (4") (102 mm). Traps for floor drains shall be fitted with a trap primer or shall be of the deep seal design. Alternative seals that are in conformance with ASSE 1018 or ASSE 1044 are acceptable.
510 R.I. Code R. 510-RICR-00-00-2.26
Amended effective 2/1/2022