7.4.7.

(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 cleanout fitting,

(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 fixture drain serving a kitchen sink.

(1) Except as provided in Sentences (2) and (3), on drainage piping of 4 in. size and smaller, the minimum size cleanout opening shall be the same size as the drainage pipe and on drainage piping larger than the 4 in. size, the cleanout opening shall be 4 in. or larger and the maximum spacing between cleanouts on horizontal pipe shall be,

(a) in the case of a sink waste pipe, 6 m,

(b) in the case of a horizontal sanitary drainage pipe, or storm drainage pipe, other than a waste pipe from a sink, 15 m, and

(c) in the case of a horizontal sanitary drainage pipe or storm drainage pipe larger than 4 in. size, 30 m.

(2) The spacing between manholes serving a building sewer,

(a) 24 in. or less in size shall not exceed 90 m, and

(b) over 24 in. in size shall not exceed 150 m.

(3) The developed length of a building sewer between the building and the first manhole to which the building sewer connects shall not exceed 30 m.

(4) Cleanouts that allow rodding in one direction only shall be installed to permit rodding in the direction of flow.

(5) Manholes shall be located at all junctions, all changes in grade, size or alignment (except for curvilinear alignment) on a sanitary building sewer that is 8 in. or larger in size.

(6) Manholes shall be located at changes of grade, size or alignment (except for curvilinear alignment) on a storm building sewer or storm drainage piping that is 8 in. or larger in size.

(1) A manhole including the cover shall be designed to support all loads imposed upon it.

(2) A manhole shall be provided with,

(a) a cover which shall provide an airtight seal if located within a building,

(b) a rigid ladder of a corrosion-resistant material where the depth exceeds 1 000 mm, and

(c) a vent to the exterior if the manhole is located within a building.

(3) A manhole shall have a minimum horizontal dimension of 1 200 mm, except that the top 1 500 mm may be tapered from 1 200 mm down to a minimum of 600 mm at the top.

(4) A manhole in a sanitary drainage system shall be channelled to direct the flow of effluent.

(1) Cleanouts and access covers shall be located so that the openings are readily accessible for drain cleaning purposes.

(2) A cleanout shall not be located in a floor assembly in a manner that may constitute a hazard and shall not be used as a floor drain.

(3) Reserved.

(4) Each change of direction of the piping between a cleanout fitting and the drainage piping or vent piping that is serves shall be accomplished by using 45° bends. 

(5) A cleanout shall be provided to serve vertical drainage piping from a wall hung urinal and shall extend above the flood level rim of the fixture.

(6) A cleanout serving a fixture in health care facilities, mortuaries, laboratories and similar occupancies, where contamination by body fluids is likely, shall be located a minimum of 150 mm above the flood level rim of the fixture.