Applications and Techniques

Pile Foundation / Deep Foundation Techniques

Continuous Flight Auger Drilling (CFA)
Continuous Flight Aauger (CFA) Piles are Hollow Auger Piles also know as Deep Foundations Cast in Place or Helical Displacement (HDP)
Full Displacement Pile System (FDP)
Drilling with Cased Continuous Flight Auger (CCFA)
Driven Cast-In-Situ Piles (DCIS)
Ductile Piles
Secant Pile Walls
Tangent Pile Walls
Rigid inclusion or Controlled stiffness columns (CSC®)
Controlled modulus columns; CMC
Bi-modulus columns or Hybrid columns (Colonne à module mixte/CMM®)
DSM - Wet soil mixing, also known as Deep soil mixing or Mass stabilization
Vibro Concrete Columns or Vibro Displacement Columns (VDC)

Drilling with Cased Continuous Flight Auger (CCFA)

Drilling with Cased Continuous Flight Auger is one of the single-pass drilling techniques. During the drilling process, a continuous flight auger protected by a counter-rotating casing string conveys the drill spoil to the surface. Concrete is subsequently poured through the hollow stem of the auger. With drilling diameters of up to 600 mm, FOW counts as one of the CCFA drilling techniques.

BENEFITS

• Improved installation times

• Improved verticality tolerance

• Pile is protected from influence of surrounding ground (e.g. ground water)

• Reduced concrete consumption

• Consistent performance of drilling and concreting processes using the assistant systems

• Clean jobsite due to dried soil (absence of water)

• Convenient conversion of the drilling rig

• Penetration through hard layers possible