Tenders Are Invited For Construction Work For Engineering Works Except Bridges, Tunnels, Shafts And Subways ... in France

Work Detail

Construction Work For Engineering Works Except Bridges, Tunnels, Shafts And Subways – Reconstruction And Rehabilitation Work Of The Le Napoléonien Combined Collector In Rambouillet - Application Phase. The Scope Of The Work Concerns The Unitary Network “Le Napoléonien” Located Inside The Park Of The Château De Rambouillet Just Upstream Of The Guéville Wastewater Treatment Plant. The Napoleonic Network Is Initially Made Up Of 2 Main Pipelines Respectively, Circular Northern Branch Dn1500 Mm And Flat-Bottomed Southern Branch Dn1200 Mm Over 1.2Km (At A Depth Between 2 M And 3 M) Before Joining Into A Single Main Pipeline Dn 2000Mm Over 600Ml (At A Depth Between 3M And 4M). These Structures Are On The Banks Of The Guéville, Hence The Presence Of A Tablecloth At Approximately 1.80 M. The Master Plan “Updating The Sanitation Master Plan For The Communes Of Rambouillet, Gazeran And Vieille-Eglise-En-Yvelines” Made It Possible To Define A Work Program On The Napoleonic In Order To Eliminate Any Infiltration Of Parasitic Clear Water. The Estimated Volume Of Clear Water Is Of The Order Of 600 M3/D (Or Approximately 7 L/S) At The Napoleonic Level. In 2025, A Distribution Chamber Was Created To The Right Of The Dn1200mm And Dn1500mm Collectors In Order To Be Able To Isolate Each Of The Branches In Order To Carry Out Their Rehabilitation. The Major Objectives Of This Operation Are As Follows: • Restoration Of Waterproofing, • Reinforcement Of The Structural Condition Of The Structure • Disconnection Of Rainwater Inlets • Improvement Of The Operating Conditions Of The Structure The Work Includes: • Laying In Open Trenches Of 575Ml Of Dn2000mm Cast Iron Sanitation Pipes, At A Depth Of Between Approximately 2.50M And 5.10M, • One-Off Rehabilitation (Removal Of Infiltration) From Existing Collectors Using The Following Techniques: Dn1500mm: Installation Of Stainless Steel Cuff (Including Preparatory Work); Dn1200mm: Injection Into The Masonry And Repair Of The Slab; • The Creation Of A C3 Distribution Chamber In Cast-In-Place Concrete At The Junction Between The Existing Dn1200mm And Dn1500mm And The Projected Dn2000mm Pipe, • The Connection Of The Projected Dn2000mm Pipe Projected Onto The Prv Dn2000mm Collector Which Supplies The Gazeran Wastewater Treatment Plant, • The Disconnection Of The Overflow From The Brochet Pond And Its Connection To The Existing Ep Network, • The Disconnection Of The Overflow Of The Faisanderie Pond

Contact Information