Interlock and Ekotex® – Peel Ports – Offshore wind farm
- Location
- Outer Harbour, Peel Ports, Northgate, South Beach Parade, Great Yarmouth, Norfolk, NR30 3GY
The background
When Peel Ports undertook the development of high-performance pavement areas at their Great Yarmouth terminal, they were preparing for a massive logistical undertaking: supporting the construction of the East Anglia Two (EA2) Offshore Wind Farm. Port environments are notoriously unforgiving, and the infrastructure here needed to handle extreme, heavy-duty operational activities without failing. To tackle this ground stabilisation challenge, principal contractor Erith Contractors and Swanton Consulting partnered with the specialist engineering team at Geosynthetics Ltd.
Our client’s requirements
The core requirement was straightforward but technically demanding: engineering a high-performance logistics platform capable of supporting heavy plant machinery and relentless logistical traffic.
Traditional ground engineering methods usually mean digging deep, costly excavations and importing tonnes of expensive aggregate. Peel Ports needed a value-engineered design that bypassed these inefficiencies.
They required a multi-layered geosynthetic system that could handle soil separation and high-load reinforcement simultaneously, whilst being robust enough to secure quick, collaborative technical sign-off from the peer engineering teams.
Our value engineered solution
Imagine soft subgrade soil acting like mud under pressure; without reinforcement, heavy traffic forces aggregate layers to sink, causing the surface to fail. To prevent this, Geosynthetics Ltd engineered a bespoke, multi-layered system combining Interlock high-modulus geogrids with Ekotex® non-woven geotextiles.
The Interlock geogrids provide exceptional lateral restraint through aggregate interlock, mechanically locking the stone in place to increase stiffness, while the Ekotex® geotextile acts as a separation layer to prevent subgrade fines from pumping upward under dynamic loads. The solution follows the latest guidance from BS 8661:2019.
Operating under a “Design and Build” framework, our civil geotechnical engineers collaborated directly with Swanton Consulting to facilitate a seamless, rigorous technical acceptance.
Standout Result:
This smart, peer-to-peer engineering collaboration slashed initial design requirements by optimising the layers of geogrid and significantly reducing aggregate thickness. This saved approximately 25,250 tonnes of aggregate and eliminated 1,250 HGV deliveries, vastly lowering material costs, reducing local CO2 emissions, and accelerating construction times.
To review the complete design configurations, structural calculations, and technical schematics for this project, download the case study now!
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