The materials of all house drains laid in any streets, alleys or public or private places shall be of good quality, glazed vitrified-clay (rubber-ring type), cast iron pipe, or asbestos cement, not less than four inches in diameter, the size of the pipe to be used in a given installation to be determined by the authorized city agent, extending from the public sewer to a point about five feet outside of the exterior wall of the building to be connected with said sewer. Only cast iron pipe shall be used when any building is constructed over any sewer pipe. All floor drains installed in public garages, repair shops and similar places shall be provided with a catch basin through which the drainage shall pass before entering the sewer. The basin shall not be less than two feet, six inches, in cross sectional dimension and two inches in depth below outlet connection, when a four-inch drain is installed. A trap shall be provided in the outlet connection between the catch basin and the main drain, and said trap shall be vented. Such plumbing shall comply with the Oregon State Plumbing Specialty Code. No septic tanks, cesspools or dry wells shall be used between buildings and the sanitary sewer. A property owner in whose plumbing installation catch basins are required shall keep such catch basins clean and remove sediment regularly. The city shall be authorized to inspect all catch basins periodically and may order the cleaning of the same any time deemed necessary. All floor drains shall be provided with suitable and accessible cleanout and the same shall never be removed except for purpose of opening stoppages and cleaning the drain.
(Code 2000 § 5.230)