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Eurocodes

Ease of use and reduction of NDPs

The introduction of a more user-friendly approach and the potential reduction of NDPs are horizontal issues across existing standards.

Enhanced ease of use

The use of clear language and structure will aid the ease of use of Eurocodes by practical users. To the extent that it can be technically justified whilst safeguarding the core of essential technical requirements and taking into account feedback from users, enhanced ease of use will be achieved by:

  • improving clarity;
  • simplifying routes through the Eurocode;
  • avoiding or removing rules of little practical use in design;
  • avoiding additional and/or empirical rules for particular structure or structural-element types.

Reduction in number of NDPs

All existing Eurocodes will be assessed concerning the potential to significantly reduce the number of Nationally Determined Parameters (NDPs). This work should be done in close collaboration with the JRC and be based on the NDPs as defined on national level and uploaded in the specific NDP database.

The following steps are foreseen:

  • review the contents of all countries’ National Annexes and supporting documents;
  • compare the values or choices made, using where possible the JRC database;
  • eliminate the NDPs where little or no variation exists;
  • seek unanimity, where there is good consensus;
  • in cases of wide variation, seek the reasons and try to eliminate them.