Understanding the Continuous Flight Auger (CFA) Piling Process
CFA piling, or Continuous Flight Auger piling, is a highly efficient and widely adopted technique for creating robust foundations, particularly suited for unstable or soft ground conditions. At Direct Piling, we utilise this sophisticated method to construct CFA piles by drilling a continuous flight auger deep into the ground. This auger acts as a temporary casing, with its flights supporting the sides of the bore at all times by being filled with soil, preventing collapse.
Once the auger reaches the predetermined depth, a high-quality concrete mix is pumped through its hollow stem. Simultaneously, the auger is slowly and carefully withdrawn. This process ensures that the concrete fills the void from the bottom up, maintaining continuous support to the bore walls and preventing soil ingress. Immediately after the auger is fully withdrawn, the reinforcement cage is inserted into the freshly placed concrete. This creates a solid, reinforced concrete pile that is structurally integral with the surrounding soil.
Benefits and Applications of CFA Piles with Direct Piling
Direct Piling offers cutting-edge CFA piling services, distinguished by our commitment to innovation and client satisfaction. The continuous flight auger technique is not only fast and economical but also one of the quietest piling methods available, making it exceptionally well-suited for sensitive environments. Its limited noise and vibration emissions are a significant advantage, particularly in dense urban areas or near existing structures where disruption must be kept to an absolute minimum. This makes CFA piles an ideal choice for residential, commercial, and infrastructure projects alike.
We boast a versatile range of flight auger sizes, enabling us to tailor the most cost-effective and structurally appropriate design for your specific project requirements. Whether you require foundations for large-scale developments or more confined spaces, we can implement the CFA method effectively across our range of piling rigs, from our mini rigs designed for restricted access to our larger rigs for extensive projects.
