Stabilisating Foundations: Ground Engineering
Screw piling and ground stabilisation are used where structures are affected by subsidence, settlement or weak ground, or where new foundations are required in restricted or sensitive environments.
Screw piles provide a proven, engineered solution with minimal vibration, low noise and no soil removal. They are ideal for live sites, occupied buildings and heritage assets. Piles are installed to depth until a specified torque is achieved, providing immediate confirmation of load capacity.
Ground stabilisation and slab lifting are often delivered alongside piling to arrest movement and restore performance without excavation.
By avoiding mass concrete and spoil removal, screw piling offers significant sustainability benefits while delivering long-term foundation performance.
For complex ground stabilisation projects, our diagnostic methodologies and soil consolidation strategies reflect the elite engineering principles championed by the British Geotechnical Association
Torque is Truth: The Science of Screw Piling
Unlike concrete foundations which require curing time and assumption-based design, screw piling is data-driven and rapid – ground engineering at its fastest.
How it works
- Torque-to-Capacity Correlation: Piles are installed using hydraulic torque motors. The torque required to drive the pile is directly correlated to the soil’s load-bearing capacity. We don’t just hope it holds; we know the exact capacity the moment installation is complete.
- Zero Spoil, Zero Mess: Because the pile acts as a displacement tool, no soil is removed from the ground. This eliminates the cost of muck-away lorries and keeps the site clinically clean—perfect for hospitals, schools, and enclosed courtyards.
- Low Vibration & Noise: The installation is rotary, not percussive. This makes it safe for use next to sensitive heritage assets or party walls where hammering could cause collateral damage.
Our engineers execute all screw piling and deep foundation installations in strict accordance with the technical standards defined by the Federation of Piling Specialists.
Total Ground Stability: Piling & Slab Lifting
We often combine mechanical piling with chemical ground improvement to offer a complete geotechnical solution.
1. Remedial Underpinning: For subsiding walls, we install piles offset from the footing and transfer the building’s load onto the piles using engineered brackets. This halts movement instantly and can often lift the building back to level.
2. Ground Stabilisation & Slab Lifting: Where floor slabs have dropped due to voiding or poorly compacted fill, we use expansive geopolymer resins.
- The Process: We inject resin through 12mm holes. It expands beneath the slab, compacting the weak soil and hydraulically lifting the floor back to its original datum.
- The Result: A re-levelled floor and stabilised sub-base without ripping out the concrete.
Sustainability Advantage: By eliminating mass concrete and reducing vehicle movements (no spoil removal), screw piling significantly lowers the embodied carbon of your foundation package.
Ground Engineering Projects
Screw Piles technique for Two New Builds
Screw Piles technique for Two New Builds Structural Repairs revolutionises foundation solutions with both screw piles and helical piles. This innovative approach triumphs in challenging sand and peat terrain, as…
Underpinning – Sevenoaks
Underpinning Sevenoaks A residential property, located in Sevenoaks, which was in dire need of improved foundations. Its extension was built on inadequate foundations which resulted in it falling away from…
Subsidence – Woking
Subsidence Woking This residential Woking property had suffered from subsidence and had quite a substantial drop under one of the front corners of the house. As quite a pressing issue…
Ground Engineering from Structural Repairs
Immediate Capacity: Zero Disruption
If you are dealing with subsidence or planning a build in a restricted access zone, stop digging and start ground engineering.
Contact us for a pile design and ground stability assessment.
