Guidance on drafting National Annexes
The determination of the levels of safety of buildings and civil engineering works and parts thereof is, and remains, within the competence of CEN Members. The national standard implementing the EN Eurocodes in a country can have a National Annex, which is usually published by the relevant National Standardisation Body (NSB) and contains all national choices to be used for the design of buildings and civil engineering works to be constructed in the relevant country.
While the principles underpinning the content of National Annexes have not fundamentally changed in the Eurocodes evolution, there are some areas that deserve clarification. Thus, CEN/TC 250 provides a guidance document on drafting National Annexes to EN Eurocodes for National Standardization Bodies (NSBs).