This piling method is ideal for use in cohesive soils. The rotating auger is forced into the strata reaming out the soil as it goes. Once the required or desired depth has been met the augers are with drawn leaving an "open hole". Steel reinforcement is then placed before being filled with concrete.
These highly mobile rigs are economic to use on large open sites with cohesive ground, and on chalk or some sands. Smaller models are suitable to internal use. As a rotary auger causes minimal vibration it is ideal for use next to buildings or underground services. It is also possible the utilise these rig for "down the hole hammer" where rock or dense material is drilled allowing the piles to be anchored in place.
Standard Pile Size's and Bearing Capacities
*Subject to confirmation
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