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auger piling
We undertake auger piles up to 300mm
in diameter. This type of piling is used when vibration and noise must
be kept to a minimum. Loads from 60kN to 200kN can be achieved dependant
on ground conditions. Across is the T3000 rig which can operate in
restricted access areas and with limited headroom.
The following is the method of
installing open bored piles:
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Set up piling rig over the
pile position. Ensure that it is stable.
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Lift the lead flight into the
guide on the rig, and insert drilling head.
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Commence auguring. Once the
lead flight has been screwed into the ground add a second
segmental auger flight and couple it to the first using coupling
pins.
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Insert the drilling head and
continue auguring, adding subsequent flights until the required
depth is reached.
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To extract the flights lift
the head and auger string out of the bore. As each flight is
extracted remove the arising from the flight, insert support
plate at base of flight to prevent auger sting from falling back
and disconnect the flight. This process should be repeated until
the auger string has been completely removed from the bore.
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Provided the bore is stable
concrete to top level of temporary casing.
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Place steel reinforcement
into the concrete as required, using spacers as necessary.
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Move to a new pile position
and repeat steps 1-7
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