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Technique

Secant Pile Wall

A retaining wall made of overlapping concrete piles, with reinforced secondary piles creating a continuous, load-bearing structure for deep excavations and groundwater control.

  • Soil Nails
  • Self-Drilling Anchors
  • Stressed Anchors
  • Rock Bolts
  • Strand Anchors
  • Auger Drilling
  • Rotary Drilling
  • Percussion Drilling
  • Jet Drilling
  • Diamond Drilling
  • Walkover Survey
  • Test Holes
  • Surveys
  • Soil Material Recovery
  • Logging and Profiling
  • Laboratory Testing
  • In-situ Tests
  • Geophysical Methods
  • Desk Study
  • Contiguous Pile Wall
  • Mixed-in-place Slurry Wall (MIPW)
  • Secant Pile Wall
  • Soldier Pile Wall
  • Sheet Pile Wall
  • Mechanically Stabilize Earth Wall (MSE)
  • Displacement Piling
  • Driven Cast In-Situ Piles (DCIS)
  • Open Hole Auger Piling
  • Cased Auger Piling
  • Limited Access Piling
  • Micro Piling
  • Odex / Symmetrix Piling
  • Oscillator Piling
  • Driven Precast Piling
  • Percussion Piling
  • Underpinning
  • Marine Piling
  • Tubular Piling
  • Sheet Piling
  • Post Ramming
  • Ductile Iron Piles
  • Rota Piles (DTH Air Driven Hammer)
  • Spot Bolting
  • Deep Foundations
  • Lateral Support
  • Geotechnical Investigations
  • Slope Stability
  • Retaining Structures
  • Tunnels
  • Materials
  • Soil Improvement
  • NHBRC Certification – Foundation
  • Site verification and process control
  • Rockfall Mitigation Systems
  • Erosion Protection
  • Gabion Walls
  • Landslide Mitigation Systems
  • Dynamic Compaction
  • Consolidation Grouting
  • Compaction Grouting
  • Jet Grouting
  • Soil Mixing
  • Rigid Inclusions
  • Stone Columns
  • Vibro Compaction
  • Impact Compaction
  • Dry-Mix Applications
  • Wet-Mix Applications
  • Dynamic Load Testing
  • Integrity Testing
  • Pull-out Testing
  • Static Load testing

Secant Pile Wall

technique

A retaining wall made of overlapping concrete piles, with reinforced secondary piles creating a continuous, load-bearing structure for deep excavations and groundwater control.

Where this technique is applied

  • Deep basements
  • Underground stations
  • Shafts and tunnels
  • Waterfront structures
  • Deep excavations in sand or gravel

Specialist equipment

Casagarande B125;

Hutte HBR203;

Recent projects

Lateral Support

Clifton School

The project involved constructing a gunite lateral support retaining wall to stabilise excavated slopes. The works included surface preparation, installation of band drains and reinforcing mesh, and the application of gunite to create a structural retaining face.
View this project
Clifton lateral support site progress

Recent projects

Lateral Support
Sprayed Concrete

Meadowview

Construction of a soil nail lateral support wall for the Meadowview Site 14 excavation, comprising drilled and grouted TB500 soil nails, reinforced shotcrete facing, and drainage systems to stabilise the excavation.
View this project
P003 meadowview lateral support 10 access road along wall angled view

Recent projects

Sprayed Concrete

Saldanha Substation N

The project includes the construction of a contiguous CFA piled lateral support wall including primary soft piles, reinforced hard piles, Titan soil anchors, reinforced shotcrete facing, and staged excavation to stabilise the substation excavation.
View this project
P002 saldanha substation n aerial site overview

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