Case Studies
Real-world applications demonstrating the performance and versatility of the Rosehill Drainage System in challenging environments
Featured Projects
Pembroke Rail Cutting
Trackside Drainage in Challenging Ground Conditions
Project Overview
The Pembroke Rail Cutting project presented a complex drainage challenge that required innovative solutions and precise execution. Located in South Wales, this trackside drainage installation demonstrated the Rosehill Drainage System's capability to overcome significant ground conditions and infrastructure constraints while delivering exceptional performance.
Working as part of broader rail renewal works, the project required completion within tight rail possession windows, making efficiency and reliability critical factors in the solution design and installation process.
The Challenge
- Shallow bedrock severely restricted excavation depth for traditional drainage solutions
- Telecoms infrastructure presence further limited layout options and routing possibilities
- Curved, uneven terrain required drainage route to follow complex topography
- Tight rail possession windows as part of broader renewal works demanded rapid, efficient installation
- Performance requirements needed to achieve target discharge rate of 42 litres per second
The Solution
- Rosehill Drainage System installation along the cutting with precise 1:20 longitudinal gradient
- On-site cutting and stepping of units while maintaining complete flow continuity
- 75mm compacted pea gravel bed provided stable, well-draining support base
- 50mm Rosehill Drainage Mats strategically positioned to protect trough from sediment build-up
- Modular system flexibility allowed adaptation to ground constraints without performance compromise
target achieved
precision installed
after cutting/stepping
within possession
Results
- Target discharge rate achieved: 42 litres per second flow capacity successfully delivered
- Constraint adaptation: Successfully navigated ground and infrastructure limitations
- Schedule compliance: Installation completed on time with no delays to broader renewal works
- Performance integrity: No compromise to hydraulic performance despite complex installation requirements
- Operational success: System remained fully functional and effective post-installation
The Rosehill Drainage System proved how the system can overcome challenges we encounter on site regularly. The ability to cut and step the units without impacting the performance was extremely useful under a time-restricted install.
Installation Images
National Highways Test Centre
Independent Validation for Strategic Road Networks
Project Overview
The National Highways Test Centre validation project represents a critical milestone in establishing the Rosehill Drainage System's credentials for strategic road network applications. This comprehensive testing programme provided independent verification of system performance under extreme conditions.
Through rigorous full-scale testing protocols, the project demonstrated the system's capacity to meet and exceed the demanding requirements of major highway infrastructure projects, validating both hydraulic performance and structural resilience.
Testing Requirements
- Extreme rainfall simulation to validate capacity under peak flow conditions
- Structural loading tests to confirm resilience under heavy traffic loads
- Long-term durability assessment for strategic infrastructure requirements
- DMRB compliance verification across multiple performance criteria
- Independent validation by recognised testing authority
Testing Protocol
- Full-scale test installation replicating real-world highway conditions
- Simulated extreme rainfall events exceeding design storm intensities
- Comprehensive flow measurement validating hydraulic performance claims
- Structural stress analysis under representative loading scenarios
- Extended monitoring period to assess performance consistency
conductivity confirmed
flow rate validated
compliance confirmed
approved status
Validation Results
- Performance confirmed: All hydraulic performance claims independently verified
- Structural integrity: System demonstrated exceptional resilience under test loads
- DMRB compliance: Full conformity with highways design manual requirements
- Official approval: National Highways approved status granted
- Strategic road eligibility: Approved for use across strategic road network
The comprehensive testing programme at the National Highways Test Centre provides independent validation of the Rosehill Drainage System's exceptional performance capabilities. This approval opens opportunities across the strategic road network, demonstrating our commitment to delivering proven, reliable drainage solutions for critical infrastructure.
Testing & Installation Images
