The key point to remember is that every point on any drainage system should be accessible from an inspection chamber or a rodding eye.
Rodding eye inspection chamber.
Rodding eye 22 metres 22 metres 45 metres 45 metres access fittings 12 metres 22 metres 22 metres inspection chamber 22 metres 22 metres 45 metres 45 metres manhole 45 metres 100 metres shallow access chambers up to 600mm deep to be polypipe terrain 4di600 fittings with a 4difc1 top unit.
An inspection chamber is needed any time the pipework changes direction with an angle of more than 30dg if there s a change in pipe size or if two pipes come together at a junction of more than 45dg.
Deep inspection chamber system allowing for space around the unit to work in.
Inspection chambers are a crucial part of any drainage system as they allow for testing inspection and cleaning of the system.
Rodding eyes and access chambers should be used to enable all parts of the underground drainage to be cleared and to allow removal of blockages.
Do i need a ventilating pipe through the roof.
You should use an inspection chamber whenever a branch pipe joins a main drainage run unless it s a rainwater pipe and you can rod the branch pipe downstream via a rodding eye.
You should also use one whenever any drainage pipe changes direction horizontally by more than 30 or when there is a straight run of more than 22m.
An inspection chamber is a clean out generally installed at the property line of a building and a rodding eye is a removable cover on the opening within a drain pipe that helps remove an obstruction by drain rods.
These should either be accessible through an inspection chamber or a rodding eye.
For more info about.
Watching the installation of below ground drainage around a typical residential property and explaining the principal fittings required.
Install the chamber base unit on at least 100mm of granular material.
