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Monumental building structures, bridges, and other civil engineering structures

(*) Structures or parts of structures that can be dismantled with a view to being re-used should not be considered as temporary.

The reliability required for structures [within the scope and field of application of EN1990] shall be achieved through design in accordance with EN1990 to EN1999 and by appropriate execution and quality management measures.

EN1990 allows for the choice of different levels of reliability, both for structural resistance and for serviceability. The choice of the levels of reliability for a particular structure should take account of the relevant factors, including :

- the possible cause and /or mode of reaching a limit state;

- the possible consequences of failure in terms of risk to life, injury, potential economical losses;

- public aversion to failure;

- the expense and procedures necessary to reduce the risk of failure.

The levels of reliability relating to structural resistance and serviceability can be achieved by suitable combinations of protective measures (e.g. protection against fire, protection against corrosion, etc.), measures relating to design calculations (e.g. choice of partial factors), measures relating to quality management, measures aimed to reduce errors in design (project supervision) and execution of the structure (inspection in phase of execution) and other kinds of measures.

Point (B3.1) of EN1990 Annex B defines three classes based on the consequences of failure or malfunction of the structure (Table 2.2).

Table 2.2. Consequences classes [Table (B1) - EN1990ยก

Consequences Class

Description

Examples of buildings and civil engineering works

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