Product Overview

Summary: This Post-Tensioned Concrete Operations Safe Operating Procedure sets out a clear, step-by-step method for planning, installing, stressing and inspecting post-tensioned (PT) systems on Australian construction sites. It focuses on controlling the significant safety risks associated with high-tension strands, heavy stressing equipment and concrete works, while supporting WHS compliance and consistent construction quality.

Post-tensioned concrete delivers major structural and commercial advantages, but it also introduces high-consequence risks that must be tightly controlled. Strands stressed to hundreds of kilonewtons, heavy hydraulic jacks, congested work decks and tight construction programs can quickly create a dangerous environment if work is not standardised. This Safe Operating Procedure provides a practical, field-ready framework for managing PT works from pre-start planning through to stressing, grouting, sign-off and handover.

The document translates Australian WHS obligations and technical requirements into clear, task-based instructions that frontline teams can actually follow. It addresses critical risk points such as strand handling, anchorage zone works, exclusion zones during stressing, working at height around decks and edges, and coordination with concrete placement. By implementing this SOP, businesses can reduce the likelihood of catastrophic strand failures, equipment incidents, struck-by injuries and structural defects, while also improving productivity and communication between engineers, post-tensioning specialists and general site crews.

Key Benefits

• Reduce the risk of catastrophic strand or anchorage failures by standardising safe stressing and inspection practices.
• Ensure compliance with Australian WHS legislation and relevant post-tensioning and concrete standards.
• Improve coordination between engineers, PT specialists and site crews through clearly defined roles, responsibilities and hold points.
• Minimise rework, delays and structural defects by embedding quality checks at each critical stage of PT installation and stressing.
• Strengthen training and onboarding for new workers with a clear, step-by-step procedure for all post-tensioned concrete activities.

Who is this for?

• Construction Project Managers
• Site Supervisors
• Post-Tensioning Supervisors
• Structural Engineers
• Leading Hands and Forepersons
• Post-Tensioning Technicians
• Formwork and Concrete Crew Leaders
• WHS Managers and Safety Advisors
• Principal Contractors
• Civil and Structural Contractors

Hazards Addressed

• Release of stored energy from PT strands or tendons during stressing or cutting
• Failure of anchorages, wedges, jacks or hoses under high tension
• Struck-by hazards from recoiling strands, tools or components
• Crush and pinch injuries from hydraulic jacks and stressing equipment
• Falls from height around decks, edges and penetrations
• Trips and falls due to congested decks, tendons and stressing equipment
• Manual handling injuries from lifting coils, ducts, anchors and equipment
• Exposure to cementitious dust, grout products and concrete splashes
• Noise and vibration from stressing equipment and associated plant
• Electrical hazards from powered equipment, leads and wet environments

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions and Terminology (Post-Tensioning Components and Processes)
• 3.0 Roles, Responsibilities and Competency Requirements
• 4.0 Applicable Legislation, Standards and Codes of Practice
• 5.0 Pre-Start Planning and Engineering Documentation Review
• 6.0 Plant, Tools and Equipment Requirements (Including Inspection and Maintenance)
• 7.0 Personal Protective Equipment (PPE) Requirements
• 8.0 Hazard Identification and Risk Controls for PT Operations
• 9.0 Delivery, Storage and Handling of Tendons, Ducts and Anchors
• 10.0 Installation of Ducts, Strands and Anchorage Hardware
• 11.0 Pre-Pour Inspections, Sign-Offs and Hold Points
• 12.0 Concrete Placement, Curing and Protection of PT Components
• 13.0 Stressing Operations: Set-Up, Exclusion Zones and Communication Protocols
• 14.0 Stressing Operations: Step-by-Step Procedure and Recording of Forces
• 15.0 Cutting, Trimming and Finishing of Strands and Anchorages
• 16.0 Grouting Operations and Verification of Tendon Encapsulation
• 17.0 Working at Height and Edge Protection Requirements Around PT Decks
• 18.0 Manual Handling and Housekeeping Controls on PT Work Decks
• 19.0 Emergency Procedures for Equipment Failure, Strand Failure or Injury
• 20.0 Environmental Considerations (Waste Concrete, Grout and Washout Management)
• 21.0 Training, Induction and Competency Assessment
• 22.0 Monitoring, Review and Continuous Improvement of the PT SOP
• 23.0 Document Control and Recordkeeping (Stressing Records, Inspection Reports)

Legislation & References

• Work Health and Safety Act 2011 (Cth and relevant state/territory variants)
• Work Health and Safety Regulations 2011 (Cth and relevant state/territory variants)
• Safe Work Australia – Code of Practice: Managing the Risk of Falls at Workplaces
• Safe Work Australia – Code of Practice: Managing Risks of Plant in the Workplace
• AS 3600: Concrete structures
• AS 4672.1: Steel prestressing materials – General requirements
• AS 4672.2: Steel prestressing materials – Uncoated stress-relieved strand
• AS 3850: Prefabricated concrete elements (where PT is used with precast)
• AS/NZS 1576: Scaffolding (for access and edge protection around PT decks)
• AS/NZS 3012: Electrical installations – Construction and demolition sites