This Part 11 of prEN1993-1 gives design rules for structures with tension components made of steel which due to their connections with the structure are adjustable and replaceable. Due to the requirement of adjustability and replaceability such tension components are mostly prefabricated products delivered to site and installed into the structure as a whole. Tension components that are not adjustable or replaceable, e. g. air spun cables of suspension bridges, are outside the scope of this part though rules of this part may be applicable. This part also gives rules for determining the technical requirements for prefabricated tension components for a structure and for assessing their safety, serviceability and durability.