26m0230pa - Travaux de renouvellement de la canalisation acier Dn 900 avenue Louis Bazerques à Toulouse - Mrc/

The contract timeline includes a preparation period of 2 months, which is common to both lots and is not included in the overall execution period. The execution of the market, including the preparation period, begins from the date of contract notification. The actual execution of the works commences on the date specified by the service order. A detailed execution calendar, including task durations and start/end dates, will be developed by the project manager after consulting with the contractors.

No explicit contract start date, end date, or total duration for the entire contract is stated in the provided documents. The duration of any subcontract is also not specified.

The core scope of work for this tender, specifically for "Lot 1 Travaux d’eau potable" concerning the "Dévoiement du DN 900 acier" (Diversion of DN 900 steel pipe) project in Toulouse, involves the following key activities and deliverables:

Core Scope of Work and Deliverables:

• Supply and installation of a DN 900 steel potable water pipeline over 420 linear meters.
• Earthworks, including trench excavation up to 5.0 meters in depth.
• Supply and installation of a valve chamber for the DN 900 steel pipeline.
• Supply and installation of air valves (ventouses) and drainage systems on the DN 900 steel pipeline.
• Backfilling of the abandoned pipeline.
• Provision of fittings, special parts, and valves, including tees, elbows, flanges, butterfly valves (DN900), gate valves (DN150 for bypass, DN200 for air valve), triple function air valves, and drainage points.
• Civil engineering works, specifically a buried chamber.
• Connection to the existing upstream and downstream network and ensuring the continuity of cathodic protection.
• Plugging of the DN900 pipe under the Lestang path.
• Road and sidewalk restoration, including stripping above the trench, repair of concrete sidewalks and asphalt bike paths, and ground marking.
• Preparation of as-built documentation (Dossier de Récolement / DOE), which includes network survey and as-built drawings.

Statement of Work Summary Highlights:

The project includes several preparatory and restrictive tasks:

• Site preparation: Installation, signage, interventions in sensitive areas, site guarding, bailiff reports (before and after works), and managing site immobilization due to network discoveries.
• Works under particular restrictions: Including night work.
• Preparatory works: Localization of buried networks, demolition of road coverings, dismantling and re-installation of curbs/gutters/islands, removal and re-installation of urban furniture, brush clearing, tree felling, and tree replanting.
• Elimination of inflows.

The methodology for execution requires:

• An analysis of site constraints with photographic evidence.
• A description of the method for characterizing and reusing site materials (excavation/backfill).
• Details on the main supplies, including their origin and technical characteristics, with a 30-year commitment on external corrosion and internal abrasion for steel tubes and fittings.
• A detailed work phasing plan and optimization of the maximum delay.
• Details of tests and a list of hold points.
• Site organization and planning.
• Internal control procedures for materials and samples.
• Measures for site protection, continuity of cathodic protection, and optimization of cut-off time.
• Environmental considerations: Proposed optimizations to reduce the carbon footprint using the ECO²chantier tool, and environmental provisions detailed in a specific SOSED (Schéma d'Organisation et de suivi de l'Elimination des Déchets de chantier).