Product Overview

Summary: This Wind Load Evaluation Safe Operating Procedure provides a clear, defensible method for assessing wind actions on structures, temporary works and building elements across Australian conditions. It helps organisations design, review and verify installations so they remain stable and safe under expected wind loads, supporting WHS obligations and engineering due diligence.

Wind loading is a critical factor in the safety and performance of buildings, temporary structures, façades, roofs, signage, scaffolds and material handling systems across Australia’s varied wind regions. When wind loads are not evaluated consistently and in line with current standards, the risk of structural failure, collapse or component detachment increases significantly, exposing workers, building occupants and the public to serious harm. This Wind Load Evaluation Safe Operating Procedure establishes a robust, repeatable process for determining design wind actions, documenting assumptions, and communicating requirements to designers, contractors and site teams.

Developed for Australian conditions, this SOP guides users through site wind region identification, terrain and topography assessment, importance levels, pressure coefficients and load combinations in accordance with relevant Australian Standards. It closes the gap between engineering design and on-the-ground implementation by defining how wind load evaluations are requested, performed, checked and incorporated into drawings, temporary works designs and installation methods. By embedding this procedure into your WHS and design management systems, you reduce the likelihood of wind-related incidents, improve regulatory compliance and create a clear audit trail to demonstrate that structures have been designed and reviewed for the wind conditions they will actually face.

The document is particularly valuable where multiple parties interface—such as between designers, principal contractors, subcontractors and event organisers—by clarifying responsibilities, version control, and approval steps for wind-related design decisions. It supports safer decision-making about when work must cease due to high winds, how to manage staged construction, and what verification is required before structures are handed over or occupied.

Key Benefits

• Ensure consistent, standardised assessment of wind loads across projects and sites.
• Reduce the risk of structural failures, collapses and component blow-offs caused by under-estimated wind actions.
• Demonstrate compliance with Australian Standards and WHS legislation through clear documentation and traceability.
• Streamline communication between designers, engineers, contractors and site teams regarding wind design assumptions and limits.
• Support safer operational decisions about work in high winds, temporary works staging and event structure deployment.

Who is this for?

• Structural Engineers
• Design Engineers
• Construction Project Managers
• Site Supervisors
• Temporary Works Coordinators
• Scaffolding Supervisors
• Civil Engineers
• WHS Managers
• Facilities and Asset Managers
• Event and Staging Managers

Hazards Addressed

• Structural collapse or partial failure due to under-designed wind loads
• Detachment and airborne projection of roofing, cladding, signage or sheeting
• Instability and overturning of temporary structures such as scaffolds, hoardings, stages and marquees
• Falling objects from elevated structures during high wind events
• Uncontrolled movement or toppling of stored materials, plant or equipment in exposed areas
• Worker exposure to unsafe structures that have not been verified for local wind conditions

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions and Abbreviations
• 3.0 Roles and Responsibilities
• 4.0 Applicable Standards, Codes and Legislative Requirements
• 5.0 Wind Region, Terrain and Topography Assessment
• 6.0 Determination of Design Wind Actions (Permanent and Temporary Works)
• 7.0 Input Data Requirements and Assumptions
• 8.0 Evaluation Process for Permanent Structures
• 9.0 Evaluation Process for Temporary and Event Structures
• 10.0 Integration with Structural Design and Detailing
• 11.0 Verification, Peer Review and Approval Requirements
• 12.0 Documentation, Calculations and Drawing Control
• 13.0 Site Implementation and Pre-Start Checks
• 14.0 Operational Limits and High-Wind Action Triggers
• 15.0 Inspection, Monitoring and Reassessment After Modifications or Storm Events
• 16.0 Training and Competency Requirements
• 17.0 Non-Conformance, Corrective Actions and Continuous Improvement
• 18.0 Recordkeeping and Audit Trail
• 19.0 References and Supporting Tools (Checklists, Templates, Calculation Sheets)

Legislation & References

• AS/NZS 1170.2: Structural design actions – Wind actions
• AS/NZS 1170.0: Structural design actions – General principles
• AS 4100: Steel structures
• AS 3600: Concrete structures
• AS 4991: Lifting devices (for wind effects on lifting equipment and devices)
• AS/NZS 4576: Guidelines for scaffolding
• Work Health and Safety Act 2011 (Cth and state/territory equivalents)
• Work Health and Safety Regulations 2011 (Cth and state/territory equivalents)
• Safe Work Australia – Code of Practice: Managing the Risk of Falls at Workplaces
• Safe Work Australia – Code of Practice: Construction Work