A telescopic Kelly bar is used to excavate pile bores in all types of ground conditions. In-hole tools can be changed easily to adapt to changing ground strata, from soft soil to hard bedrock.
Where soft overlying strata is encountered, casings are installed to provide temporary pile bore support during the pile construction.
Bentonite or polymer fluids can also be utilised to provide temporary pile bore support.
Reinforcement is placed prior to concrete placement to ensure accurate positioning and level. Concrete is then poured through a tremie pipe.
Bored piles are typically used in bridge abutments, medium to high-rise buildings, marine applications and instances where high moment resistance is desirable.
Suttles are capable of installing pile diameters of between 350mm and 1,800mm and up to 40m deep.