The basic requirements for construction works set out in Annex I shall constitute the basis for the preparation of standardisation mandates F1, standards under Article 18A, and UK Assessment Documents.

The essential characteristics of construction products shall be laid down in harmonised technical specifications in relation to the basic requirements for construction works.

For specific families of construction products covered by a F2designated standard, the F3Secretary of State may, in relation to their intended uses as defined in F2designated standards, determine by F4regulations in accordance with Article 60, those essential characteristics for which the manufacturer shall declare the performance of the product when it is placed on the market.

F5The Secretary of State may also determine, by F6regulations in accordance with Article 60, the threshold levels for the performance in relation to the essential characteristics to be declared.