Case Studies

Delivering Trenchless Solutions for Complex Mains Rehabilitation

Challenge

• Persistent wet weather throughout the full six-week programme, with rainfall experienced every day, significantly impacting ground conditions and excavation activities
• Saturated terrain across farmland and rural routes, increasing the risk of access issues and plant becoming immobilised
• A disused railway line running above sections of the main, creating additional constraints around access, ground stability and design approvals
• Unforeseen challenges encountered along the route, requiring reassessment and redesign of elements of the project, leading to minor delays while solutions were agreed

Solution

• Installed track mats from key access points across fields and rural terrain, enabling safe and continuous movement of plant and vehicles while minimising land damage
• Adapted excavation processes by transferring excavated material directly into grab wagons, reducing the risk of soil being displaced or washed across the site due to heavy rainfall
• Deployed a specialist 15-tonne long-reach machine to safely access and complete works in the constrained areas around the disused railway line
• Progressed works in controlled 110-metre sections, allowing installation and connection to continue while design adjustments were made elsewhere on the route

Outcome

• Completed the project ahead of programme despite sustained adverse weather conditions
• Successfully reinstated all water services, restoring the main to full operational performance
• Delivered high-quality installation supported by rigorous testing and validation in line with client and industry standards
• Ensured long-term reliability and integrity of the rehabilitated asset prior to final handover
• Maintained efficient delivery through adaptive planning and on-site problem solving