Project Summary
Coffey successfully delivered the replacement of aging trunk water mains between Arnesby Distribution Booster Station (DBS) and Knaptoft Distribution Service Reservoir (DSR). The project significantly upgraded critical water infrastructure, addressing leakage issues, improving operational resilience, and supporting long-term service reliability.
Project Description
Located from Arnesby Distribution Booster Station to Knaptoft Distribution Service Reservoir in Leicestershire, the project involved the installation of Ductile Iron (DI) mains to replace deteriorating 8”/9” Cast Iron and 12” PVC mains, significantly improving water quality, system resilience, and supply performance for over 6,000 properties.
Scope of Works
The works included:
- Replacement of 4,071m of existing 8″/9″ CI and 12″ PVC water main with new DI mains.
- Installation of 6,280m of 350mm DI and 2,464m of 300mm DI pipeline.
- Renewal of boundary boxes, stop taps, wash outs, hydrants, sluice valves, air valves, meters, service connections and associated pipework.
- Excavation of verge and carriageway for trunk and distribution main installation.
- Excavation and construction around the booster station and reservoir for key infrastructure tie-ins.
- Installation of new suction and delivery surge vessels, including associated reinforced foundations and footpaths.
- Renewal of the Electromagnetic (EM) meter verification chamber.
- Temporary road and lane closures, including the A5199 Welford Road, for pipe laying and associated works.
Technical Highlights
- Use of a trencher to accelerate pipeline excavation.
- C4 roadfoam utilised as backfill for carriageway reinstatement, delivering faster reinstatement and enhanced structural integrity during the defects period.
- Construction of reinforced structures and foundations for surge vessels and kiosks.
- Commissioning of new surge vessels to enhance system protection and stability.
Environmental and Community Measures
- Community engagement was managed through on-site communication and letter drops during property connection phases.
- Environmental impacts were reduced through efficient reinstatement techniques and the reuse of suitable materials where feasible.
Added Value
- Accelerated pipeline installation using trenching equipment.
- Innovative use of C4 roadfoam improved reinstatement performance and reduced programme duration.
- Effective coordination with road authorities ensured minimal disruption during traffic management phases.
To learn more about Coffey’s work in water, or to discuss future opportunities, please contact us at 091 844356 or info@coffeygroup.com.
