CFA PILING
Continuous Flight Auger Piling Techniques
Continuous flight auger piles are constructed by injecting concrete through the hollow stem of the auger, with the spoil being extracted in one continuous movement as the auger is withdrawn. After the pile head is cleared of debris steel reinforcement is submerged into the high slump concrete.
CFA piling is a particularly economical choice of piled foundation in sands, gravels and low grade rock as this process requires no casings or drilling fluids.
Plant and Equipment
We offer an expanding fleet of CFA rigs from 5T to 65T. Pile sizes range from 300mm to 1200mm and up to 30m depth. To help us ensure pile integrity all rigs are fitted with computer monitoring systems which record pile dimensions, concrete pressures and volumes.
In addition to the piling rig, all machines will be supplied with concrete pumps and on larger sites concrete holding drums.
GEOTHERMAL PILING
The temperature differential between the ground and soil provides a means of heating or cooling buildings during the winter and summer months respectively.
ROTARY PILING
Rotary rigs create the pile bore by removing the soil in sections, approximately a metre deep, until the design depth has been reached. At this stage full depth reinforcement cages, steel sections or permanent casings can be easily installed prior to the placement of concrete.
MINI PILING
Central Piling has a variety of bored and driven piling rigs suitable for house extensions, basement construction and restricted access sites.
FURTHER TECHNIQUES
In addition to the piling works, we offer a variety of other products like anchors, grouting, piling platform installation and maintenance, ground beam and slab construction, aswell as spoil removal and pile trimming.
DRIVEN PILING
Driven piles are installed by dropping a hammer weight on a pre-formed pile. When the pile moves a predetermined distance for a given hammer drop height, the pile capacity has been achieved.
RETAINING WALLS
We offer a variety of bored pile retaining walls when provision for temporary and permanent support for basement excavations is required.