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Friday, 11 September 2009

Using CCTV To Really Find Out Whats Happening In Your Drains

By Lee Davidson

Time passes as surely as night follows day. Drains, like everything else, age over time and things can get worse. A drain is obviously designed to go underground, clearly not easy to see inside it, and the only way to really see what is actually going on inside is to use CCTV. Deterioration of the drain can come from lots of different sources. Ground movement, root intrusions and poor construction can cause massive problems

Drains run underground mostly. Stating the obvious I know but that means that you can't know for sure what is going on inside the pipe. The problem could be a blockage, or equally, a collapsed wall, a tree root intrusion, and also many other possible causes of the problem with your drains. Not knowing to me is not an option, better to know what you're dealing with so that preventative measures can be taken

Once you know that you have a drainage problem, there are a couple of ways that you can diagnose the problem. Using CCTV, there are two systems available to you. These are the push rod and also available is the crawler system. The push rod and the crawler system are both available through reputable drainage specialist- better perhaps to know that they are available so you can ask your drainage contractor which they carry. They should carry both systems

The crawler system is used for drainage pipes over 150mm in diameter. Smaller drainage systems (less than 150mm) are diagnosed using the push rod system. Full, detailed reports are then compiled to show exactly what is wrong with the drain so you can then decide what is the best method of solving the drainage problem

An experienced CCTV operator will look out for a variety of problems. Collapsed drains can look remarkably similar to blocked drains and the two problems may need to be tackled in different ways. Tree roots can be seen through the camera lens. Surveys can be written up into a document and then written to a DVD so that they can be stored and recalled easily in the future

CCTV Surveys are also used for Build Over Surveys ( for example when building an extension on your home) or for a Homebuyers Report ( to assess the quality of the drainage in a home you intend to buy ). Avoid problems in the future by commissioning a build over survey first rather than last

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