(A) Private manhole.
(1) For private sewers eight inches in diameter and larger, private manholes must be constructed with a maximum spacing of 300 feet, at changes in horizontal or vertical direction and at other locations required by the Engineer. They may be used on smaller private sewers in lieu of cleanouts.
(2) A control manhole is required on the private sewer serving each user in an industrial building as required by the Engineer in accordance with District ordinances.
(B) Cleanout to grade “C.O.T.G.”. A cleanout shall be constructed on four-inch and six-inch sewer laterals at intervals not to exceed 100 feet, as well as at blind bends greater than 45 degrees. See division (C) below for requirements at connection to building plumbing. Also see division (A) above for use of manholes in lieu of cleanout to grade for private sewers. No cleanout is required on runs less than ten feet in length. (See § 33.153.)
(C) Two-way cleanout to grade. Two-way cleanouts shall be constructed on all four-inch sewers at the connection of the private sewer with the plumbing drain. This cleanout shall be located no further than two feet from the building wall and protected with an approved box. (See § 33.154.) Each building lateral shall have a vent, trap and cleanout. The vent riser shall be extended a minimum of four inches above finished grade, but not higher than the elevation of the lowest plumbing fixture attached to the building drains. Building lateral cleanouts shall be installed at intervals not to exceed 100 feet of straight runs and at all changes in alignment exceeding 22.5 degrees. They shall be extended to finished grade, and be placed in a concrete, or other approved yard box with removable lid. The entire assembly shall have adequate strength to resist applied loads.
(D) Other structures. Other required structures will be located as shown on approved plans and be constructed in accordance with District requirements.
(Ord. 2019-02, passed 4-25-2019)