SFA Piling
At Piled Solutions, our groundwork contractors offer a range of specialist foundation installation techniques, including both open and restricted access solutions, such as rotary piling. SFA (Sectional Flight Auger) piling involves the use of a continuous flight auger (CFA) to drill into the ground, followed by an injection of concrete through the auger’s hollow stem as it’s withdrawn. This method creates a cast-in-situ pile with minimal ground disturbance and without the need for open excavation. It is especially effective in urban or restricted-access sites, where noise and vibration must be kept to a minimum.
We cover clients in Kent, Hertfordshire, West Sussex, East Sussex, Essex, Brighton, Crawley, Croydon, Romford, Chelmsford, Wimbledon, Tunbridge Wells, Harrow, St Albans, Haywards Heath, Colchester and Harlow.
This solution offers a quick, clean, and reliable solution for a wide range of soil conditions, making it ideal for both residential and commercial construction projects.
SFA piling is a method of restricted access piling, suitable for sensitive areas due to its compact equipment, low noise levels, and minimal ground disturbance. The continuous flight auger system allows our groundwork contractors to install piles without the need for open excavation or temporary casing, making it perfect for sites with limited working space or height restrictions. Its quiet operation and low vibration levels mean it can be used safely near existing buildings, underground services, or sensitive environments. With quick installation and minimal spoil, SFA piling is a clean, efficient, and reliable solution for foundation installations in tight or hard-to-reach areas.
The piling rig is positioned over the designated pile location and aligned precisely to ensure correct placement.
A continuous flight auger is drilled into the ground to the required depth. The auger displaces the soil as it advances, without creating an open borehole.
Once the target depth is reached, concrete is pumped through the hollow stem of the auger. The auger is then slowly withdrawn while concrete is continuously injected to fill the void.
Our groundwork contractors insert a steel reinforcement cage into the fresh concrete immediately after the auger is removed, before the concrete begins to set, to provide added strength.
The concrete pile is left to cure, forming a strong, cast-in-situ foundation installation. The site is cleaned and prepared for the next pile if required.
This method ensures:
Consequently, it’s well-suited to sensitive or built-up areas across Croydon, Romford, Chelmsford, Wimbledon, Tunbridge Wells, Harrow, St Albans, Haywards Heath, Colchester, Harlow, Kent, Hertfordshire, West Sussex, East Sussex, Essex, Brighton, Crawley and beyond.
