Bored Piles
Bored piles are cylindrical bodies made of concrete (with or without reinforcement) which are installed in the ground with a kelly bar and auger technique using a drill rig. The length, diameter, material, shape and layout of the piles can be varied according to their intended use.
Continuous flight auger (CFA)
Continuous flight auger piles (CFA) are created by inserting a hollow-stem auger into the ground in a single pass. Once the depth has been met the auger is slowly removed with concrete pumped through the hollow-stem auger to form the pile. This method is ideally suited and used in unstable ground conditions.
Secant Piles
Secant piled walls are a type of embedded retaining wall and can be created as cantilevered or propped for greater excavation depths. These techniques form a continuous barrier to reduce flow of soils and water through the wall.
Cased Piles
Cased piling is another form of piling into weak, low durability, sandy or river bed soils. Casing of various sizes and lengths depending on structural elements is achieved by drilling the pile and inserting a 8-10mm steel casing. The casing is then lifted out slowing once concrete is placed. This helps guarantee a structurally sound pile construction in these soils.
Sheet Piles
Sheet piling retains soil, using steel sheets with interlocking edges. The interlocked sheet piles form a wall for permanent or temporary lateral earth support with reduced groundwater inflow.
