Continuous Flight Auger (CFA) Piles are built by drilling a hollow-stem auger into the ground to form the pile’s diameter and a concrete pump is utilised to deliver concrete through the hollow auger stem to the pile.
Pile diameters range from 300mm to 1.2 m.
Piling Lengths range to 36 m.
Rig weights range from 11t to 160t.
CFA Piles can be installed quickly and inexpensively without significant vibration or excessive noise being produced. They are ideally suited for most soil types. Avopiling’s own design of drilling tools is capable of drilling into certain rock layers. Once desired pile level is achieved sand-cement grout or special concrete mix is then pumped into the hole through the hollow stem of the auger while being extracted, eliminating the need for temporary casing and making them ideal for non-cohesive or water bearing soils.
CFA System is ideal for foundation piles and for embedded retaining walls such as contiguous and secant piled walls.
Perth City Link, formerly known as the Northbridge Link, is a collaborative project funded by three tiers of Government and led by Metropolitan Redevelopment Authority and the Public Transport Authority (PTA).
The PTA’s $609 million ($360 million Rail and $249 million Bus stage) transport infrastructure work at and around Perth Station is the catalyst to bring Perth City Link's vision to life.
Installation of 288 No. 2800mm x 1200mm rectangular Cutter Soil Mixing panels up to 9m in depth
Installation of Stage 1 during 2012 of 81 No. 1050mm & 1200mm diameter Bored Piles up to 47m in depth utilising a temporary casing system with the combination of polymer and bentonite as drilling fluid. The piles included socketing of up to 12m in the Kings Park Formation rock. Stage 2 to commence in 2013, includes 62 No. 1050mm & 1200mm diameter piles up to 45m in depth.
Installation of 330 No. of 750mm & 600mm diameter Continuous Flight Auger (CFA) Secant Pile Wall up to 16m in depth for the Pedestrian Underpass
Installation of 100 No. 450mm diameter CFA Secant Pile Wall up to 11m in depth for temporary excavation works in front of the Horse Shoe Bridge
Installation of 100 No. 750mm & 900mm diameter CFA Contiguous Wall Piles for Barrack Street East/West & The Child Care Centre
Installation of 132 No 700mm & 1200mm diameter up to 10.5m deep Jet Grouting Columns
Perth City Link, formerly known as the Northbridge Link, is a collaborative project funded by three tiers of Government and led by Metropolitan Redevelopment Authority and the...
