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'''EN 1990 – Eurocode 0: Basis of structural design''' is the basis for building codes known as [[Eurocodes]]. It sets out the way to use Eurocodes for structural design.
'''EN 1990''' establishes Principles and requirements for the safety, serviceability and durability of structures, describes the basis for their design and verification and gives guidelines for related aspects of structural reliability.
'''EN 1990''' is intended to be used in conjunction with [[EN 1991]] to [[EN 1999]] for the structural design of buildings and civil engineering works, including geotechnical aspects, structural fire design, situations involving earthquakes, execution and temporary structures.
'''EN 1990''' is also applicable:
*for the design of structures where other materials or other actions outside the scope of EN 1991 to EN 1999 are involved,
*for the structural appraisal of existing construction, in developing the design of repairs and alterations or in assessing change of use.
'''EN 1990''' may be used, when relevant, as a guidance document for the design of structures outside the scope of the EN Eurocodes EN 1991 to EN 1999, for:
*assessing other actions and their combinations;
*modelling material and structural behaviour;
*assessing numerical values of the reliability format.
Annex A2 of [[EN 1990]] gives rules and methods for establishing combinations of actions for serviceability and ultimate limit state verifications (except fatigue verifications) with the recommended design values of permanent, variable and accidental actions and ψ factors to be used in the design of road bridges, footbridges and railway bridges. It also applies to actions during execution. Methods and rules for verifications relating to some material-independent serviceability limit states are also given.
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