CONTINOUS FLIGHT AUGER

Continous Flight Auger (CFA) piling is a form of cast-in-place bored piling. The method is fast and efficient, significantly reducing the piling schedule on site. The main advantage of the CFA method over traditional auger bored piling is that there is no requirement for temporary casing, even in water bearing strata. It is suitable for forming piles in most ground conditions including gravels, sand, clay, silts and rock.

Smooth Edge offers pile diameter’s from 400mm (16 “) up 1200mm (48”) drilled to depths up to 25.0m.

Construction Process

Piles are formed by drilling a hollow stem continuous auger into the ground. At the design depth a high slump concrete is then pumped under pressure into the pile via the hollow stem auger.

 

The auger is extracted at a controlled rate corresponding to the concrete supply rate. Upon completion of the concreting process the spoil is removed from around the head of the pile. A reinforcement cage is then placed into the fluid concrete

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Process is effectively quiet with virtually no vibration. System used for forming load bearing piles and earth retaining walls

Smooth Edge has a range of modern rigs ranging from a 40t machine up to a heavy duty 90t rig