ROTARY PILING
Construction technique & application
By utilising a telescopic kelly bar our large rotary rigs create the pile bore through the removal of 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. Where piles are used for deep basements it may be permissible to leave the concrete at a low level in order to reduce pile trimming.
Rotary piling is generally used in dry stable soils and rocks. However in cohesionless soils, piles may still be formed with the use of casing or drilling fluid to support the bore.
For small diameter piles operating in stable soils throughout the foundation depth, our CFA rigs can efficiently create an open hole auger (OHA) pile. It is also worth noting that our mini rigs adopt a sectional flight method to create the pile bore as their mast height restricts the use of a kelly bar system.
Plant & equipment
We have a wide variety hydraulic rigs ranging from 2.5T to 80T. This provides pile sizes ranging from 250mm to 2500mm and up to 77m depth. The short mast height and small footprint of some of the rigs mean that most sites are accessible with our equipment.

We have a wide variety of hydraulic and crane mounted rotary rigs
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.
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.
CFA PILING
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.