The technical specifications are chosen by reference to standards or other equivalent documents available to candidates.
The standards or documents must be marked “or equivalent” and chosen in the following order of preference:
1° National civil standards transposing European standards;
2° European technical approvals;
3° Common civil technical specifications;
4° National civil standards transposing international standards;
5° Other international civil standards;
6° Other technical reference systems drawn up by European standardisation bodies or, in their absence, national civil standards, national technical approvals or national technical specifications relating to the design, calculation and execution of works and the use of supplies;
7° Civil technical specifications defined by companies and widely recognised by them;
8° National “defence standards” and specifications relating to military equipment which are similar to these standards.
The European rules relating to the nature and content of technical specifications are published in the Official Journal of the French Republic.