CEN - European Commitee for
Standardization - works in conjunction with other organizations, in
particular, it has an agreement for technical cooperation (the Vienna
Agreement) with the International Organization for Standardization (ISO, prepares common European design rules, Eurocodes (EC), following order
vouchers (mandates) from European Community which in due course will
replace the corresponding national rules, assumes that every member
country issues a national Application Document (NAD), which will contain: -
national values of the boxed numbers which every nation may choose, -
references to standards, - possible changes, additions and alternatives, -
comments and explanations.