DARA Contractors provide specialist piling solutions. With our in-ground expertise we work on a wide range of rail, road, civil, mining and infrastructure projects.

Our estimators, engineers, designers, and project management professionals can deliver solutions for even the most complex environments using best practice solutions. It takes detailed planning and site analysis to install piling systems that suit individual sites. DARA’s expertise ensures every foundation we construct is to right quality and built with precision.

Safety is of utmost importance without jeopardising quality or efficiency to achieve results that are of the highest standard. We strive for excellence in everything we do.

Bored Piles

Bored piles are a common technique for constructing foundations in ground conditions that are fair to good; for example, where the ground is not contaminated with acid sulphates or asbestos; where there is no risk of a shallow water table; or in rock and cohesive soils. Drilling bored piles into rock can minimise the chance of foundations settling.

 

Advantages of Bored Piles

Bore piling is suitable for nearly all types of ground conditions from high grade rock to soft soils with the support of a temporary casing. The advantages of bore piles include:

  • Simple and efficient to install.
  • Achieving depths of up to 50 m with a diameter of up to 3m to achieve very high load capacities. The diameter of piles can range from 300 mm to 3000 mm in increments of 300, 400, 600, 750, 900, 1050, 1200, 1500 and 1800 mm depending on your specific requirements.
  • Limited risk to adjacent properties with minimal vibration and ground disturbance.
  • Constructing bored piles into rock deep beneath the ground.
  • Achieving greater depths compared to other techniques.

Continuous Flight Auger

Continuous Flight Auger (CFA) piles are often used in foundations for contiguous, secant and soldier pile walls, and foundation piles. We can construct them to depths of up to and around 20m.

 

 

Advantages of CFA Piles

CFA piles are suitable for a range of soil conditions including gravels, stiff clays, dense sand and low-grade rock. It is not suitable for loose sand or gravel, or in very soft clay or silts. The advantages of CFA piles include:

  • Almost vibration free.
  • Quick to install which makes it a cost-effective method.
  • Being effective for low to mid-range loads to depths of up to and around 20m which makes this technique suitable for most residential and commercial projects.
  • Low noise emissions.

When looking for a company that specialises in CFA and bored pile solutions, give DARA a call to discuss the outcomes we can deliver.