COMMENTARY AND WORKED EXAMPLES TO EN 1993-1-5 “PLATED STRUCT.pdf
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Foreword
The EN Eurocodes are a series of European standards which provide a common series of methods
for calculating the mechanical strength of elements playing a structural role in construction works,
i.e.the structural construction products. They make it possible to design construction works, to
check their stability and to give the necessary dimensions of the structural construction products.
They are the result of a long procedure of bringing together and harmonizing the different design
traditions in the Member States. In the same time, the Member States keep exclusive competence
and responsibility for the levels of safety of works.
According to the Commission Recommendation of 11 December 2003 on the implementation and
use of Eurocodes for construction works and structural construction products, the Member States
should take all necessary measures to ensure that structural construction products calculated in
accordance with the Eurocodes may be used, and therefore they should refer to the Eurocodes in
their national regulations on design.
The Member States may need using specific parameters in order to take into account specific
geographical, geological or climatic conditions as well as specific levels of protection applicable in
their territory. The Eurocodes contain thus ‘nationally determined parameters’, the so-called NDPs,
and provide for each of them a recommended value. However, the Member States may give
different values to the NDPs if they consider it necessary to ensure that building and civil
engineering works are designed and executed in a way that fulfils the national requirements.
The so-called background documents on Eurocodes are established and collected to provide
technical insight on the way the NDPs have been selected and may possibly be modified at the
national level. In particular, they intend to justify:
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