The highly versatile CFA piling technique has become the most widely used bored piling system in the UK.
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.
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.