PIL/General/TBT-PIL-011

Screw Pile Installation

Piling & Foundations › General › Screw Pile Installation

All Categories/Piling & Foundations/General/Screw Pile Installation

Screw Pile Installation

Toolbox Talk Record

Ref: TBT-PIL-011  |  Issue: 1  |  Date: March 2026
PresenterProject
LocationDate

What?

  • Screw piles are steel shafts with helical plates that are rotated into the ground using a hydraulic torque head.
  • They are used for foundations where low vibration, minimal spoil, and rapid installation are required.
  • The torque head rotates under high hydraulic pressure — contact with the rotating shaft causes severe injury.
  • Screw piles must be installed to the depths and torque values specified by the geotechnical designer.
  • The installation rig must be set up on a stable platform with adequate bearing capacity.
  • Buried services must be located before installation, as the helical plates can sever cables and pipes.
  • Operatives must maintain a safe distance from the rotating pile shaft and torque head during driving.
  • Noise levels during installation are generally lower than driven piles but still require hearing assessment.
  • Extensions are added to the shaft as the pile is driven deeper — handling these involves manual handling risks.
  • Torque monitoring during installation provides real-time data to verify pile capacity is being achieved.

Why?

EntanglementThe rotating pile shaft and torque head can catch clothing and limbs, causing fatal entanglement injuries in seconds.
Service strikesHelical plates rotating through the ground will sever gas, electricity, and water services if not located beforehand.
Foundation integrityIncorrect installation depth or torque values result in inadequate bearing capacity and potential structural failure.
Do Don't
  • Locate all buried services using CAT, Genny, and service plans before installation
  • Maintain a safe exclusion zone around the rotating pile shaft and torque head
  • Monitor torque values continuously and record them against design requirements
  • Set up the installation rig on a stable, level platform with adequate bearing capacity
  • Use mechanical aids to handle pile shaft extensions to reduce manual handling risk
  • Brief the installation team on the specific pile layout and design requirements
  • Inspect the rig, torque head, and hydraulic connections at the start of each shift
  • Ensure operators hold the appropriate qualifications for the piling rig category
  • Stop installation and consult the designer if expected torque values are not achieved
  • Wear hearing protection where noise assessment indicates it is required
  • DON'T stand within reach of the rotating pile shaft during installation
  • DON'T wear loose clothing, lanyards, or unsecured items near the torque head
  • DON'T install screw piles without completing a buried services survey first
  • DON'T exceed or fall short of the specified torque without engineer approval
  • DON'T set up the rig on soft or uneven ground without ground improvement
  • DON'T manually guide pile extensions while the torque head is engaged
  • DON'T ignore unexpected resistance or sudden loss of torque during driving
  • DON'T use damaged or bent pile shafts — reject and replace them
  • DON'T operate the rig without completing pre-start hydraulic system checks
  • DON'T allow unauthorised personnel inside the exclusion zone during piling

See also: Piling Safety Awareness | Piling Rig Stability and Setup
ebrora.com

RAMS Builder

Generate professional Risk Assessment and Method Statements in minutes. 10 document formats, site-specific content, instant Word download.

Learn More