ISO 22966:2009 gives common requirements for the execution of concrete structures and applies to both in-situ works and construction using prefabricated concrete elements.ISO 22966:2009 requires that the execution specification state all the specific requirements relevant to the particular structure.ISO 22966:2009 is applicable to temporary as well as permanent concrete structures.Additional or different requirements can be considered and, if required, given in the execution specification when using lightweight aggregate concrete; other materials (e.g. fibres) or constituent materials; or special technologies/innovative designs.ISO 22966:2009 does not apply to the following: concrete members used only as equipment or construction aids for the execution; specification, production and conformity of concrete; production of precast concrete elements made in accordance with product standards; safety and health aspects of execution, or third-party safety requirements; contractual issues or responsibilities for the identified actions.