[81101508] - Génie architectural - Architectural engineering[81000000] - Services d'ingénierie et de recherche et services technologiques - Engineering and Research and Technology Based Services[72141600] - Travaux de construction et maintenance de systèmes de transport en commun (Trains, métro, tramway) - Mass transit system construction and maintenance services (Train, tramway, subway)[81101500] - Génie civil - Civil engineering[72140000] - Travaux Publics - Heavy construction services