Blog>Questions>What is the difference between a rodding eye and an inspection chamber?
Last updated: 9 August 2023
What is the difference between a rodding eye and an inspection chamber?
Both rodding eyes and inspection chambers are both parts of an underground drainage system, but they have slightly different functions... What is a rodding eye? A rodding eye is the term given to the removable cover at the top of a drain access pipe at ground level. Rodding eyes are used to inspect
Both rodding eyes and inspection chambers are both parts of an underground drainage system, but they have slightly different functions...
What is a rodding eye?
A rodding eye is the term given to the removable cover at the top of a drain access pipe at ground level. Rodding eyes are used to inspect and remove obstructions from the drains below.
When the rodding eye is removed, a drainage or cleaning rod can be passed down the drain pipe to clear any blockages caused by debris or natural deposits that have built up over time.
What is an inspection chamber?
An inspection chamber, otherwise known as a manhole, is a larger access point to the underground drainage pipes, typically used to carry out general maintenance and remove blockages from the drains.
You'll no doubt have seen many manholes around, and those covers are the access points to get into inspection chambers for the drainage network below ground.
When an underground drainage system is installed, various inspection chambers will be installed at the same time at intersection points where:
A branch drain pipe meets the main drainage run
There's a straight run of piping more than 22 metres long
The size of the pipe changes
A pipe changes direction horizontally by more than 30 degrees
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