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Possible correction needed to E1/VM1 Surface water

Check your Acceptable Solutions and Verification Methods E1 Surface water document has the correct formula, as provided here and in the online document.

This information was confirmed as current in February 2016. It originally appeared in Codewords newsletters prior to January 2014.

  • Published on 1 May 2009
  • Of interest to Territorial Authority, Designers, Engineers
  • 1st edition

Some printed versions of Acceptable Solutions and Verification Methods E1 Surface water have a printing error in the following formula, which appears in Paragraph 2.1.1 for calculating surface water run-off:

Acceptable Solutions and Verification Methods E1 Surface water formula

Unlike the correct version above, in some printed versions of the document the summation sign was inadvertently omitted.

If you have a hard copy of the document, check the formula and if necessary add the summation sign as given above.

This erratum was first notified in May 2009.

Acceptable Solutions and Verification Methods E1 Surface water

All guidance related to E1 Surface water

This information is published by the Ministry of Business, Innovation and Employment’s Chief Executive. It is a general guide only and, if used, does not relieve any person of the obligation to consider any matter to which the information relates according to the circumstances of the particular case. Expert advice may be required in specific circumstances. Where this information relates to assisting people: