The purpose of our site procedure is to provide a systematic method of controlling the setting out of works throughout the Piling process. Simple monitoring the day to day manoeuvring of the rig ensuring all piles are constructed within the given tolerances for both position and height, with our engineers always on hand to advise on any potential issues.
There are several methods of piling but our ‘setting out’ procedures and general services are similar throughout.
Continuous Flight Auger (CFA): The Continuous Flight Auger (CFA) system is one of the quietest forms of piling and virtually vibration free which makes CFA piles ideal for a wide range of projects, from bearing piles to retaining walls. They are perfect for inner city sites where noise and vibration might cause difficulties with neighbouring properties and on more open greenfield sites. CFA piles are suitable for a wide variety of ground conditions without the need for casing and offer good vertical and lateral capacities.
Rotary Bored Piling: Rotary Auger Bored Piling are constructed with a short solid stemmed auger attached to a telescopic Kelly bar, once the design depth has been reached the Kelly bar/auger is removed from the bore and the pile reinforcement is placed ready for concreting, once concrete has been introduced the pile is completed. Where unstable ground or ground water is encountered this piling system can install temporary/permanent lining tubes to allow sufficient support for the pile bore during the concreting process.
Driven Piling: A pile hammer is used to drive piles into the ground, which compacts the soil around the side and leads to densification of the mass and increases its bearing capacity. The blow count is the number of times the pile must be struck in order to be driven down to the desired depth. Where there are variations in the subsurface conditions, pile lengths may have to be cut-off or spliced to extend their length. Driven piles are well suited to difficult site conditions.
Pre-Cast Piling: Precast Concrete Piles are versatile and suited to most ground conditions. They are reinforced concrete sections which are manufactured off site in discrete standard lengths which are connected by reinforced concrete sections to achieve the required length.
Mini Piling: Especially adapted Rigs that can work in a confined space. This is particularly useful for basement projects in land-locked areas such as London, residential extensions where access for the larger rigs might be an issue or poor ground conditions.
Vibro Piling: The vibratory process is a ground improvement technique which is applied to weak natural soils and filled ground with the purpose to improve the load bearing capacity, reduce settlement and provide an adequate bearing stratum for the building’s foundations.
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