a. building or civil engineering works 1. construction of buildings 2. fitting out, decoration and installation work 3. assembly and disassembly of prefabricated elements 4. demolition, disassembly, alterations and restoration work 5. redevelopment and maintenance, except routine work, or work that is less extensive 6. general construction work 7. excavation, blasting and other groundwork 8. other work carried out in connection with construction activities. b. client: any natural or legal person for whom a construction project is carried out. c. client's representative: any natural or legal person who performs specific tasks pursuant to these Regulations on behalf of the client in accordance with a written agreement with the client. d. consumer: a natural person who does not primarily act in the course of commercial activity. e. coordinator: any natural or legal person responsible for coordination of project preparation or execution on behalf of the client. f. designer: any natural or legal person commissioned to draw, calculate, plan or describe the whole or parts of the building or installation to be constructed. g. one-man enterprise: undertaking that has no employees.