The Ontario Building Code | Cleanouts for Drainage Systems

7.4.7.1. Cleanouts for drainage Systems

(1) Every sanitary drainage system and storm drainage system shall be provided with cleanouts that will permit cleaning of the entire system.

(2) A cleanout fitting shall be provided on the upstream side and directly over every running trap.

(3) Every interior leader shall be provided with a cleanout fitting at the bottom of the leader or not more than 1 000 mm upstream from the bottom of the leader.

(4) Where a cleanout is required on a building sewer 8 in. or larger in size, it shall be a manhole.

(5) Where there is a change of direction greater than 45° in a sanitary building drain or a sanitary building sewer, a cleanout shall be installed at each change in direction.

(6) Every sanitary building drain or storm building drain shall be provided with a cleanout fitting that is located as close as practical to the place where the drain leaves the building.

(7) Every soil or waste stack shall be provided with a cleanoutfitting,

(a) at the bottom of the stack,

(b) not more than 1 000 mm upstream of the bottom of the stack, or

(c) on a Y fitting connecting the stack to the building drain or branch.

(8) A cleanout shall be provided to permit the cleaning of the piping immediately downstream of an interceptor.

(9) Every indirect drainage pipe carrying waste from a food receptacle shall have a cleanout access at every change of direction of more than 45°.

(10) A cleanout shall be installed on a trap arm serving a kitchen sink as close as practical to the trap outlet and shall be readily accessible.