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CPDA - Clay Pipe Development Association
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We provide manufacturers, specifiers and users of vitrified clay pipes research and technical information regarding the design of drainage &
We provide manufacturers, specifiers and users of vitrified clay pipes research and technical information regarding the design of drainage &

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CPDA - Clay Pipe Development Association's posts

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Our website is packed with useful information to help answer your Clay Drainage questions on the off chance that you cannot find the information you're after then please feel free to get in touch and we'll be happy to help... http://www.cpda.co.uk/

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Clay pipes have long been the preferred option in a broad range of aggressive conditions and can carry all effluents acceptable to sewage treatment plants. To find out more about the operational performance of clay pipes please visit our web site http://www.cpda.co.uk/pipe-characteristics/operational-performance/

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Foul Water Tests of Clay Pipes
When drains and sewers are in service, they carry foul not clean water. Therefore, the hydraulic roughness values derived from experiments with clean pipes are not appropriate for the hydraulic design of foul and surface water drains and sewers.

The CPDA sponsored research at the Water Research Centre (Stevenage Laboratory) to determine the amount of slime that adheres to the interior surface of pipes made of various materials. The materials tested were: vitrified clay with salt glaze, unglazed and ceramic glazed interior finishes; asbestos cement; pitch fibre and pvc pipes... http://www.cpda.co.uk/pipe-characteristics/hydraulic-performance/

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The facts about the installation and maintenance of clay pipes can be found here... http://www.cpda.co.uk/installation-and-maintenance/maintenance/
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Not sure of the Clay Pipe Manufacturing Standards you need to work to? You can find them here on our web site http://www.cpda.co.uk/legislation-and-standards/

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We have a wealth of information on our web site to help you design Clay Drainage Systems, from Design Layout to Terminal and Access Fittings everything you need to know all in one place http://www.cpda.co.uk/design/

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Are you involved with designing Highways, roads and bridges? You might want to take look at the contract documents detailed on our web site... http://www.cpda.co.uk/legislation-and-standards/highways-other/

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Do you know the Environmental Characteristics of clay pipes? Concern for the environment is now a primary driver for the choice of construction products. Cost can no longer be the over-riding concern and the long term impact of product choices – in terms of performance and effect on the environment – has become more important than the short term solution. http://www.cpda.co.uk/pipe-characteristics/environmental-characteristics/
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