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When and where do I need an inspection chamber?

The who-what-why-where-and-when guide to inspection chambers, and when and where you should use them.

Inspection chambers are an integral part of an underground drainage system. They allow the system to be inspected and cleaned as crucially every point in a drainage system should be accessible for maintenance. This might seem a little over cautious but if there are ever problem within the system you’ll be grateful you can quickly identify the problem and are able to get to it to fix it!

Change in direction

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. These should either be accessible through an inspection chamber or a rodding eye.

A long run

You would also need to use and inspection chamber commercially if there is straight run of piping which is over 22 metres long.

Change in gradient

When would you need an inspection chamber.

On site, if there is a change in the gradient of the land, you would need inspection chambers at the start and end point where the gradient changes.

Further from this they are also used for safety purposes as they prevent people from entering a drainage system without permission as they can be extremely dangerous.

Adoptable and non-adoptable chambers

In the UK a chamber that serves 2 or more properties and connects to the public sewer network is considered an adoptable inspection chamber.

A non-adoptable inspection chamber is a chamber which serves just one property and therefore is the responsibility of the property owner.

Find out what your sewer pipe responsibilities are in this article.

JDP offers a range of different inspection chambers suiting different depths and purposes. Our technical support team can offer you free further in-depth advice and installation guidance for your inspection chamber project.

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