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| Continuous Flight Auger (CFA) / Large Diameter Continuous Flight Auger | |
| Initially developed in the 1970's, CFA Piling is best-suited to sites with a mixed soil profile and/or sites with a high water table. Virtually vibration less and relatively quiet the system is well-suited to environmentally sensitive sites. Based upon the use of a continuous set of flights the bore is formed to the required depth. Concrete is then pumped through the hollow stem of the augers to the base of the pile. Concrete pressures are monitored and maintained as the auger is extracted and the resulting void simultaneously filled with wet concrete. Piles are cast to piling platform level with reinforcement plunged into the wet concrete and vibrated to the prescribed depth there after. |  |
| Bored Pile Retaining Wall | |
Piling Solutions' bored pile walls can be formed in most ground conditions and offer an economic solution to most temporary or permanent cast in-situ soil retaining problems. All BPW's consist of a single or multiple row of vertical piles, but how they differ in their performance relates to how they are installed along the common axis. |
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| Auger Injection | |
| Auger Injection Piling relies upon extending a continuous set of flights to the prescribed depth by adding in 1.2m auger sections. Casing is not required as the bore is stabilised by the presence of the auger or concrete, injected through the hollow stem, as the augers are extracted and the spoil removed. The integrity of the wet concrete is ensured by inspection of the central hollow stem. Axial pile capacities of up to 2400kN can be catered for on 600mm diameter piles, with depths of in excess of 34m having been achieved. |  |
| Sectional Auger Rotary Piling | |
| Best suited to piling in ground containing shallow deposits of unstable ground where temporary casings can be used to stabilise the bore during construction this system relies upon extending a continuous set of flights to the required depth like the Auger Injection System. Temporary casing is installed as the bore progresses so as to preclude collapse and/or water ingress. The augers are then extracted so as to leave a empty bore into which reinforcement can be placed. Concrete poured and cast to the required level or to ground level if ground water levels necessitate. |  |
| Cased Driven | |
| Permanently cased steel tubular piles are formed by bottom driving thin walled mild steel tube. A dry charge of aggregate and cement is placed in a crimped ended leader tube and then located on the rig. The pile and rig are then located over the pile position and driven by the use of an internal drop hammer striking the dry plug within. Subsequent follow on tubes are added by welding the spigot and socket joint between. Piles of between 150 - 350mm diameter can be driven by hammers of up to 1000kg (Nb larger diameters can be facilitated by using heavier hammers mounted on larger rigs). |  |
| Rotary Bored Piling | |
| Hydraulic rigs can install small to large diameter piles to cater moderate to heavy loads for smaller sites in urban situations. Crane mounted rigs can install large diameter piles to cater higher loads for civil engineering or high rise building structures. Applications include foundation bearing piles, contiguous walls, hard/firm, hard/hard secant walls, king post walls and soak away bores. Piling Solutions have a wide range of experience in the design and construction of bored pile walls and a full design service is available for both foundation bearing piles and retaining wall structures. |  |
| Diaphragm Walls | |
The hydro-mill has the imminent advantage over classical diaphragm walling equipment (i.e. cable grabs& chisels), when projects have at least one of the following characteristics:
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| Jet Grouting | |
The range of applications for jet grouting techniques is very broad,
from improving the mechanical properties of the soil to reducing its permeability.
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