The Structural Eurocodes are a set of voluntary European standards for engineering, drawn up by the European Committee for Standardization (CEN) and which aim to unify criteria and regulations in the areas of design, calculation and dimensioning of structures and prefabricated elements for buildings.

Eurocodes can be used in European countries to replace national regulations. To do this, the Eurocode must be complied with and also a National Application Document (DNA) that indicates the particularities that must be followed in each country to apply it. For example, although Eurocode 2 allows vertical concrete supports with a depth of 200 mm, in Spain the National Application Document of Eurocode 2 does not allow edges less than 250 mm. In Spain, AENOR's Technical Committee 140 is responsible for its incorporation as standards. UNE.

The Eurocodes drawn up are as follows:

The Eurocode guidelines are divided into “Principles” and “Rules”. The principles comprise general statements for which there is no alternative choice and therefore must be satisfied by every Eurocode project, they also include technical requirements and mandatory analytical models. On the other hand, application rules, on the other hand, are recommendations or procedures that follow the principles but for which alternative procedures can be considered, as long as they satisfy the principles at the same level as the rules recommended by the Eurocode itself.

As for the calculation bases themselves, the Eurocodes follow the limit state method. Limit states include aspects such as resistance capacity, functionality and durability.