Product Overview

Summary: This procedure sets out safe, compliant methods for stacking and storing timber and lumber in Australian workplaces. It helps prevent stack collapse, crush injuries, and product damage while supporting efficient yard layout and material handling across construction, manufacturing and warehouse environments.

Lumber and timber products are bulky, heavy and often stored in dynamic environments exposed to weather, traffic and frequent handling. Without a clear and enforced procedure, stacks can become unstable, access ways blocked, and workers exposed to serious crush and manual handling risks. This Lumber Stacking and Storage Safe Operating Procedure provides a practical, step‑by‑step framework for receiving, stacking, segregating and retrieving timber safely in line with Australian WHS expectations.

The SOP covers critical elements such as ground conditions and load‑bearing capacity, stack height limits, dunnage and rack use, segregation of lengths and grades, traffic management, and interaction with forklifts and other mobile plant. It also addresses housekeeping, inspection regimes and controls for outdoor storage, including wind, moisture and pest exposure. By implementing this procedure, businesses can significantly reduce the likelihood of stack collapse, product loss and near‑miss incidents, while improving picking efficiency, inventory accuracy and overall yard organisation. The document is designed to be easily adapted to timber yards, construction sites, joinery workshops and distribution warehouses across Australia.

Key Benefits

• Reduce the risk of stack collapse and crush injuries through clear limits, layout rules and inspection requirements.
• Ensure compliance with Australian WHS legislation and guidance on safe storage, manual handling and mobile plant interaction.
• Improve yard efficiency by standardising how lumber is received, stacked, labelled and accessed.
• Minimise product damage and waste by setting clear requirements for dunnage, support, segregation and environmental protection.
• Support consistent worker training and supervision with a documented, repeatable method for safe timber storage.

Who is this for?

• Yard Supervisors
• Warehouse Managers
• Timber Yard Operators
• Construction Site Supervisors
• Production Managers (Joinery and Fabrication)
• WHS Managers and Advisors
• Storepersons and Forklift Operators
• Logistics and Inventory Coordinators

Hazards Addressed

• Stack collapse leading to crush injuries or fatalities
• Struck-by incidents from shifting or falling timber
• Manual handling injuries from lifting, carrying or repositioning heavy lumber
• Slips, trips and falls due to poor housekeeping around stacks
• Vehicle and pedestrian interaction around storage areas
• Overloading of storage racks or compromised ground stability
• Exposure to hazardous weather conditions (e.g. high winds) affecting outdoor stacks
• Splinters, cuts and abrasions from handling rough-sawn timber

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions and Abbreviations
• 3.0 Roles and Responsibilities
• 4.0 Applicable Legislation, Standards and References
• 5.0 Risk Management and Hierarchy of Controls
• 6.0 Site Layout and Design of Lumber Storage Areas
• 7.0 Ground Conditions, Load Limits and Racking Requirements
• 8.0 Receiving and Unloading Lumber
• 9.0 Safe Stacking Principles (Heights, Widths, Stability and Clearances)
• 10.0 Use of Dunnage, Bearers, Chocks and Restraints
• 11.0 Segregation, Labelling and Access for Different Timber Types and Lengths
• 12.0 Interaction with Mobile Plant (Forklifts, Loaders and Trucks)
• 13.0 Manual Handling Requirements and Aids
• 14.0 Outdoor Storage Considerations (Weather, Wind, Drainage and UV Exposure)
• 15.0 Housekeeping, Aisle Management and Pedestrian Routes
• 16.0 Inspection, Monitoring and Maintenance of Stacks and Racking
• 17.0 Non-conformance, Hazard Reporting and Corrective Actions
• 18.0 Emergency Procedures for Stack Failure or Near Miss
• 19.0 Training, Induction and Competency Requirements
• 20.0 Recordkeeping and Document Control
• 21.0 Review and Continuous Improvement

Legislation & References

• Work Health and Safety Act 2011 (Cth) and equivalent state and territory WHS Acts
• Work Health and Safety Regulations 2011 (Cth) and equivalent state and territory WHS Regulations
• Safe Work Australia – Code of Practice: Managing the Work Environment and Facilities
• Safe Work Australia – Code of Practice: Managing Risks of Plant in the Workplace
• Safe Work Australia – Code of Practice: Hazardous Manual Tasks
• AS 4084: Steel storage racking
• AS/NZS 4801: Occupational health and safety management systems (superseded but still commonly referenced)
• AS 1684 series: Residential timber-framed construction (as guidance on timber handling and storage)
• Relevant state and territory WHS regulator guidance on safe storage and warehousing