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Contiguous pile walls are formed by constructing a line of circular reinforced concrete piles with a gap typically of 150mm between them. They may be constructed using segmental temporary casing and conventional heavy duty rotary drilling tools or by continuous flight auger techniques. A reinforced concrete guidewall can be constructed at piling platform level to aid positional and verticality tolerances, if required.
Male concrete piles are constructed with a full length reinforcement cage.
The main advantages of Contiguous bored pile walls are:
After construction, piles are broken down and usually incorporated into a reinforced concrete capping beam.