This training lesson is an e-learning output of the ROADEX Project and has been developed for use by the ROADEX Partners.  The lesson is not an approved technical standard or Regulation but rather a summary of the research reports from the ROADEX I, II, III and IV projects supplemented by various experiences and recommendations gathered by the author during numerous discussions with roads administrations and experts in the Northern Periphery area.  The lesson also describes a range of well working practices and ‘rules of thumb’ that have been found to work well in projects involving drainage of low volume roads.

By receiving this lesson and acting on it, the user accepts that no liability is given whether in contract, tort, for breach of statutory duty or otherwise.  While every effort has been made to ensure that the statements made and the opinions expressed in this lesson provide a safe and accurate guide; no liability or responsibility of any kind can be accepted in this respect by the ROADEX Project.  In addition no individual, company or organisation within the ROADEX Project can be held personally liable for misuse of information presented within the lesson.

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