An Fhrainc – Works for complete or part construction and civil engineering work – Projet Saint-Rémy-lès-Chevreuse - Marché de travaux GC – Création d’un poste de redressement à la gare de Courcelle sur Yvette

Le PR de Courcelle is a building to be constructed in concrete in R+0, with external dimensions 23.10 m (L) x 9.10 m (l) x 6.80 m excluding parapet and guardrail. The façades of the building are part of an architectural approach and are clad with a wooden cladding on one length and one width. The PR is to be located within the RATP station premises, in the immediate vicinity of operational buildings in use. The creation of the Courcelle rectification post includes, in particular: — studies and execution methods, layouts, topographical surveys and inspections of adjacent works; Major Works: — demolition and full excavation works; — construction of a retaining wall (approximately 40 m), with a height of approximately 6.00 m; The PR will be partially inserted into a slope, requiring excavation in a constrained/restricted area, with the creation of an L-shaped retaining wall that will act as a screen on one length and one width of the building. The creation of a Berlin wall avoiding the retaining wall with a less dimensioning screen is acceptable according to the demonstration of the time and economic gain. — civil engineering works for the creation of the PR (approximately 210 m2), — waterproofing works on the outer face of the type DEG for the buried parts of the PR; — waterproofing of the PR roof slab; — wet network works including the management of the PR EP from the roof to the connection in the existing network; — carrying out dry network works (1 multitubular 4 sheaths for HTA Enedis and pulling chambers, 1 multitubular 54 sheaths for energy and RATP system, technical trenches, pulling chambers), Second Works: — rendering and anti-dust interior painting works — metalwork: guardrails (approximately 65 m), ventilation grilles (approximately 12 m2), installation of handrails, crinoline and roof access ladders, pedestrian access doors and lorry access doors, fencing (approximately 66 m) gates and gateways; — installation of a clear-wood cladding on one length and one width of the PR (approximately 225 m2) — construction of 2 or 3 catenaire and radier blocks as well as an associated under-road crossing, obligatorily in ITC 2027 (interface with the RATP catenaire trade) Landscape: — installation of a vegetated roof as a cover for the PR and a vegetated complex of the type ECO Végétal (approximately 150 m2) in the environment of the PR and the station footprint. The works will be carried out according to a complex schedule linked to the various constraints generated by the enclosure of the work area, the proximity of the operator, the neighbours and transport users as well as a school. This consultation is open to variants at the initiative of the bidder. The proposed variant must obligatorily be accompanied by a "base solution" offer in accordance with the consultation file. In order to be considered, the variant must: - Only relate to the following perimeters: o Variant 1 – Excavation works o Variant 2 – Multitubular o Variant 3 – Retaining wall - Be limited to one per authorised perimeter; - Demonstrate the time and/or economic gain; - Meet the requirements, risks and conditions set out in this RPC and must comply with the standards in force, the results mentioned in the CCTP and its annexes, and not increase the risk of conflict with the surrounding works. Furthermore, the implementation of the variants must not call into question the project schedule and the available footprints, nor increase the project risks. Refer to Article 1.3 of the Consultation Regulations.