(1)P The following assumptions shall apply:

- Structures are designed by appropriately qualified and experienced personnel.

- Adequate supervision and quality control is provided in factories, in plants and on site.

- Construction is carried out by personnel having the appropriate skill and experience.

- The construction materials and products are used as specified in this Eurocode or in the relevant material or product specifications.

- The structure will be adequately maintained.

- The structure will be used in accordance with the design brief.

(2)P The design procedures are valid only when the quality requirements for execution and workmanship given in Annex D are complied with, except where specific measures are taken to enable alternative quality standards to be validated by fracture mechanics or test.

(3) Numerical values identified by □ are given as indications. Other values may be specified by Member States.

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