(1) Means of access shall be provided in sewers at distances between every such means of access not exceeding 50 metres in the case of 100-millimetre-diameter sewers, and 80 metres in the case of 150 millimetre or large diameter sewers.

(2) Access-eyes or rodding-ways for sewers shall have a minimum diameter of 100 millimetres.

(3) Rodding-ways on sewers passing under paved areas shall be brought to the surface, and shall be covered with suitably marked movable paving-blocks or cast-iron covers at least 300 millimetres square.

(4) Where rodding-ways have raking arms, the latter shall join the sewer in the direction of flow, and shall be at an angle of not more than 35 degrees from the horizontal unless the local authority approves, in writing, of a steeper angle.

(5) Such raking arms shall have the same diameter as that of the sewer they serve.

(6) Access-eyes, rodding-ways and manholes shall be gastight and watertight, and shall be fitted with identifiable cover at adjoining ground-level, but, where a manhole or rodding-way is permitted within a building, it shall be fitted with a screwed or bolted double-sealed gastight and watertight cover at adjoining floor-level.

(7) Rodding-ways having raking arms shall be sealed with an access-cover, bedded and screwed or bolted.

(8) Where the sewer is more than 2 metres deep, access shall be by means of a manhole:

Provided that a rodding-way may be permitted with the prior written approval of the local authority.