maintenance
combination of all technical and associated administrative actions during the service life (3.1.113.1)(3.1.113.2) to retain a building, or its parts, in a state in which it can perform its required functions (3.1.43)
maintenance
combination of all technical and associated administrative actions during the service life (3.1.113.1)(3.1.113.2) to retain a building, or its parts, in a state in which it can perform its required functions (3.1.43)