France – Waterproofing work – Terrassement, réparation d’ouvrages et réfection des étanchéités des tranchées couvertes et dalles de couvertures des ouvrages

This consultation concerns the refurbishment of the waterproofing on the extrados of several buried structures in the RATP network. The tunnels and stations of the Paris Metro and RER are close to the surface because the very heterogeneous nature of the Parisian subsoil has not allowed these structures to be built at great depth. The works therefore aim to: - Stop water infiltrations to prevent the deterioration of our structures; - Ensure the longevity of the structures; - Ensure the availability of the structures for operation; - Ensure the safety of RATP personnel; - Restore a better image of our spaces degraded by the presence of infiltrations; - Improve and achieve the cleanliness objectives of the spaces contracted with IDFM; - Reduce maintenance interventions by agents. The consultation is composed of two lots.