WHY CHOOSE PILING SYSTEMS?
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Our screw piles are static-load tested and fully compliant with the Australian Standards, AS2159 – 2009.
Piling System’s screw piles are:
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Produced in an Australian Standard quality-controlled factory using Australian manufactured and sourced components
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A cost-effective and practical alternative to traditional building foundations
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Fast and economical
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Durable and environmentally friendly design
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Installed using smaller excavator-based equipment rather than large piling rigs
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A perfect solution for uneven or unpredictable soil conditions
Why choose screw piles?
- Fastest pile installation method available (up to 100 piles per day)
- Load capacities of up to 2400 kn
- Installation options at any angle
- No vibration or noise
- Easy access to difficult and height constrained sites
- Eliminates all contaminated fill removal
- Excellent tension capacity
Screw Pile Technical Q & A
The pile consists of a high tensile 350 to 400 Grade steel shaft, with a single or multiple helix plate welded to the base of the shaft and a point of attack "bit" at the end, to assist in penetrating the soil profile. The pile is screwed into the soil profile by a hydraulic drive motor which is suspended off the boom of the excavator.
A pressure gauge is mounted in the cab for the operator to read the "torque" being generated as the pile is screwed into the soil profile. The torques are measured and recorded by the installer on the engineer's project log. The design requirements for the torques are test proven from soil bearing capacity to torque relationships which are related to Static Load results and C.P.T comparisons.
The number and sizes of the helixes used is a function of the soil profile, with deep firm clay profiles requiring large plates and 2 to 3 helixes. This reduces the depth the pile would have to go, with conventional piles having to penetrate deeper into the profile. This "gearing" principle gives the screw pile considerable design flexibility. Shallower soil profiles over rock would require a small single helix plate.
The screw pile is a "displacement" pile, which as the tile suggests, displaces soil as it screwed into the ground much the same as a timber screw is screwed into a plank. Unlike bored piers and driven piles, 90% of the load is generated from the helix plate at the base. Unlike bored piers and CFA piles, no spoil is excavated or removed from site, eliminating the potential issue of contaminated soils. Also due to the relatively slender shaft diameter, it far less likely to hit obstacles within the profile. Unlike driven piles, there is no vibration at all from the installation process.
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