Specialised pile strengthening solutions address existing structures with insufficient foundation capacity, differential settlement, or increased loading from extension or functional change.

 

Unlike new-build foundations, works are carried out under constraints: limited access, structural protection requirements, and strict control of vibration, noise, and disturbance. Conventional piling methods are often unsuitable.

 

The approach combines adaptable pile systems, compact equipment, and controlled construction to strengthen foundations within operational environments—improving bearing capacity, controlling settlement, and maintaining structural stability without interrupting use.

Specialised piles are installed to transfer loads to deeper, competent strata.

 

Installation is carried out using compact or low-headroom equipment, allowing works within buildings, basements, and beneath existing structures without major demolition.

 

A primary method is screw-in under-reamed steel pipe piles. Fitted with helical or winged tips, the piles are rotated into the ground to the bearing layer. The installation process forms an enlarged base at the pile tip, increasing end-bearing capacity and improving load transfer. The system mobilises both shaft resistance and end bearing, achieving high capacity with relatively small diameters.

 

The method produces low vibration and noise, making it suitable for operational facilities. Equipment adaptability enables construction in confined and restricted-access conditions with minimal impact on existing structures.

 

After installation, piles are integrated with the existing foundation via pile caps or transfer elements. Loads are redistributed to deeper strata, improving load paths, increasing capacity, and controlling further settlement.

 

Suitable for:

 

• Existing structures with insufficient foundation capacity, differential settlement, or foundation deformation
• Industrial buildings, precision equipment facilities, and critical structures requiring strict settlement control
• Projects involving vertical extension, change of use, or increased structural loading
• Ground conditions including a wide range of soils, as well as completely to highly weathered strata, where pile installation is feasible within diameters of up to approximately 600 mm
• Sites where the bearing stratum is located at moderate depth, underlain by competent materials such as dense sand, gravel, or moderately weathered rock, providing reliable end-bearing support
• Construction environments with restricted access, limited headroom, or stringent environmental requirements, including control of vibration, noise, and disturbance