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Continuous Flight Auger Piles

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.

Applications

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. 

Advantages

  • Low noise and vibration
  • Works well in non-cohesive soils
  • Cost-effective
  • Minimal site preparation
  • Suitable for tension loads
  • Can be installed successfully into most ground conditions
  • Ideal for foundation and piled earth retaining systems

More Trains, More Service (MTMS) North Works

  • LB24-01 at Wolli Creek

Project Outline

MTMS North Works awarded by John Holland to Avopiling Australia is a section of the MTMS Stage 2 Airport Tunnel Upgrade Project,

Scope of Works

The works involve are installation of piles for the Mascot Substation Launch, Retrieval Shafts and Wolli Creek Substation. The project consist of combination of piles, bored piles using segmental casings and CFA Piles. CFA piles are 49No 750mmØ and 67No 1050 mmØ to depths of 20.00 to 23.00 metres and the bored piles consist of 45No 880mmØ and 27No1000mmØ to depths of 25.00 to 26.00 metres.

Hunter Expressway F3 to Kurri Kurri

  • Hunter Expressway Viaduct 3 F3 to Kurri Kurri
  • Hunter Expressway Viaduct 1 F3 to Kurri Kurri

Project Outline

Hunter Expressway is an infrastructure road and bridge project starting from F3 to Branxton. The remarkable sections of the project is the BW011 twin bridges or Viaduct 3 and Viaduct 1 that runs through Sugarloaf Range. Piles are uniquely designed as influenced by a potential mine subsidence movement in the area. Series of bridges were constructed at around Buchanan Interchange

Scope of Works

Avopiling was awarded by the alliance to undertake the piling works at F3 interchange, retaining walls, noise walls and various bridge towards Buchanan. CFA piling commenced at Theiss' casting yard, then bored piling from F3 to Buchanan Interchange.

Project examples

More Trains, More Service (MTMS) North Works

More Trains, More Service (MTMS) North Works

NSW
MTMS North Works awarded by John Holland to Avopiling Australia is a section of the MTMS Stage 2 Airport Tunnel Upgrade Project,

Project examples

Perth City Link, Perth, WA.

Perth City Link, Perth, WA.

WA

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...

Project examples

Hunter Expressway F3 to Kurri Kurri

Hunter Expressway F3 to Kurri Kurri

NSW

Hunter Expressway is an infrastructure road and bridge project starting from F3 to Branxton. The remarkable sections of the project is the BW011 twin bridges or Viaduct 3...

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Our clients

  • Roads & Maritime
  • Department of Main Roads & Transport
  • Main Roads Western Australia
  • Transport for NSW
  • Queensland Rail
  • Sydney Water
  • Queensland Urban Utilities
  • Water Corporation
  • CPB
  • Lend Lease
  • John Holland
  • McConnell Dowell
  • OHL
  • Acciona Australia
  • Meriton
  • Brookfield Multiplex
  • Hutchinson
  • Probuild
  • JQZ Developer
  • Dragados
  • Samsung C&T
  • Bouygues Australia
  • Jaxon Construction
  • BMD
  • PTA WA
  • PTA WA 1