CFA Continuous Flight Auger Piling
The highly versatile CFA piling technique has become the most widely used bored piling system in the UK.
![Piling rig on site.](/sites/vw_uk_corporate/files/styles/text_image_visual/public/2024-06/Portrait%20website%20image%20%289%29.png?itok=i8ffL0vZ)
VolkerGround Engineering can design and install piles varying in diameter from 300mm to 1200mm in a wide range of ground conditions to a maximum depth of 32m.
- Our fleet of modern fully instrumented rigs are ideal for efficient, quiet and vibration free CFA pile installation within the most environmentally sensitive construction sites
- CFA piling installation process is versatile for most ground conditions as it does not require casing or support fluid
- Considered to be the most cost effective of the bored piling techniques
How does the process work?
The construction process used in CFA piling involves the rig drilling a hollow stem auger down to the required depth.
Once depth is attained, the concrete is then pumped from a static pump and storage agitator. Utilising the on board instrumentation system, the rig operator is able to match the tool withdrawal to the rate of pumping; ensuring positive pressure is maintained throughout the construction process.
Once the full bore has been concreted and excess spoil removed a pre-formed steel reinforcement cage is inserted to the designed depth.
Key capabilities
- Rig Loadings: 20 - 125 tonnes
- Pile Diameter: 350-1,200mm
- Maximum depth: 32m
- Working Load: up to 10,000 kN
Contact us
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