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Piling - Continuous Flight Augered

GeMech operate a number of continuous flight auger and rotary bored piling machines ranging in weight from 1.8 tonnes to 32 tonnes. Depending upon the type and configuration of machine, pile diameters range from 150mm to 1300mm.

Continuous flight auger piles are constructed by augering to the design depth using a hollow stem continuous flight auger. High slump concrete is pumped through the hollow stem while simultaneously the continuous flight auger is withdrawn at a controlled rate, thus removing a core of spoil while forming a concrete column from toe to ground level. A preformed reinforcing cage is then lowered into the concrete column to form the pile.

In order that we achieve the highest standard of pile construction, a computer is positioned in the cab of the piling machine. The PL2000 is considered by many to be the most advanced system currently available, continuously displaying and recording augering and concreting parameters. Using telemetry our Contracts Engineer can view the progress of pile construction from his laptop and if necessary take control of the boring and concreting processes.

Our smallest machine is specifically designed for limited access and low headroom and using a segmental continuous flight auger can construct piles of 150mm, 250mm and 300mm diameters. Our most recent addition to the fleet is a Mait HR-100 which is the most powerful CFA piling machine in its weight and class. In continuous flight auger mode we offer pile diameters of 300mm, 450mm and 600mm all to a maximum depth of 13 metres. In rotary bored pile mode using a telescopic Kelly bar it will construct piles in diameters ranging from 450mm to 1300mm to a maximum depth of 35 metres.

Both continuous flight auger and rotary bored piles are typically used where noise and vibration are to be minimised. The continuous flight auger method allows piles to be formed in water bearing stratum without the need for casing or bentinite and is suitable for constructing piles in most strata, typically clays, gravels, sands, silts and soft rocks. Rotary bored piles with telescopic Kelly bar but without temporary casing, are typically used for constructing piles in non-water bearing clays and soft rocks.

Comparatively inexpensive to mobilise, our modern fleet of continuous flight auger and rotary bored piling machines obtain high output at a quality and price you will find hard to beat.

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