Simplex Westpile has long been renowned for its expertise in Rotary and CFA Piling and its innovative approach to the design and construction of retaining walls.
Continuous Flight Auger (CFA) piling was introduced into the United Kingdom in 1966 by Simplex Westpile. Our long experience of this system has shown it to be a speedy and cost effective method of bored piling.
Continuous Flight Auger Piling is:
- Quiet
- Vibration free
- Wide range of depth and diameter combinations
- Effective retaining wall construction method
- Compatible with most soil types
Simplex Westpile has access to a large and modern fleet of hydraulic piling rigs capable of installing piles in varying conditions and environments.
Continuing investment in the most powerful, large hydraulic rigs by SimplexWestpile, now allows for pile diameters up to 1200mm to be installed in bearing pile and retaining wall applications.
Advancements in concrete design permits greater lengths of reinforcement to be placed where dictated by the design or construction method. CFA piling has developed into a viable alternative to traditional rotary piling for longer piles especially in unstable ground conditions.
Technique:
Piles are formed by screwing a continuously flighted auger into the ground to the required depth. Concrete is then pumped under pressure down the hollow stem of the auger to the bottom of the bore. Once pumping starts, the auger is progressively withdrawn bringing soils with it to the surface.
Drilling and Concreting operations are monitored in the driver’s cab by the most advanced computerised instrumentation system. Whilst these systems record data during the drilling operation they control the concreting operation to ensure a pile is formed correctly in the prevailing conditions.
When the auger and soil are finally removed, reinforcement to meet the design requirement is placed in the wet concrete pile.