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
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the continuous flight auger is withdrawn at a controlled rate,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.
images below to enlarge.