Kisiel Piling is a national piling contractor that offer design and build piling services for the construction of CFA, Rotary, Limited Access, Steel bearing pile, sub-structure foundations and embedded retaining walls. We are passionate about providing excellent customer service driven by a corporate culture that is focussed on collaborative working. Piling Techniques CFA Piling Continuous Flight Auger or CFA piling constructs the piles using a long, continuous auger. One pile design depth is reached, concrete is pumped through the auger’s hollow stem as it is withdrawn leaving a column of concrete in place. The reinforcing cage is then plunged into the wet concrete to complete the pile. Driven Steel Bearing Piles Steel bearing piles are structural sections; circular tubes, “I” or “H” and are driven or vibrated into the ground to a pre-determined design depth. Where circular sections are used, these are often filled with steel reinforcement and concrete to enhance the pile’s structural capacity. Steel Sheet Piling Steel sheet piling is most often employed to form earth or water retaining structures. The piles driven into the ground either with percussion or vibration and where bands of stronger ground are present pre-augering can be employed to ensure the design depth is reached. The piles are connected by a pre-formed “clutch” that has a degree of water resistance that can be enhanced by using a clutch sealant or by welding. Piling Techniques Rotary Bored Piling Rotary piling uses a short auger or drilling bucket fitted to a telescopic Kelly bar. The auger is drilled into the ground filling the space between the auger flights and lifted out of the pile bore to “spin-off” the soil into a spoil heap. The auger is then inserted back into the pile bore and the process repeated until the design pile depth is reached. Reinforcement is then placed into the open bore and concrete placed into the centre of the pile through a length of trunking or a tremie pipe until the pile is completed. Limited Access Piling Limited Access Piling is used to construct CFA and Rotary bored piles in limited access or headroom. Where the CFA technique is employed the augers short lengths of auger are coupled together to form a continuous auger string in the pile shaft. As with conventional CFA concrete or sometimes grout is pumped through the hollow stem of the augers as they are withdrawn from the pile. Reinforcement is placed into the wet concrete/grout to complete the pile.