| Primary regulatory approach |
European performance-based system
Establishes performance requirements and general design principles for access and working scaffolds. National implementation may also require local regulations and harmonized product requirements.
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United States workplace regulation
Sets mandatory minimum requirements for employers, employees, scaffold users, and scaffold components under federal OSHA construction rules.
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Australia–New Zealand standard series
Provides requirements for the design, construction, inspection, alteration, maintenance, and use of scaffolding. Project requirements may also be controlled by local legislation and site rules.
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| Typical application |
General access and working scaffolds, including modular and tube-and-fitting systems, where structural performance, stability, access, and use conditions must be defined.
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Supported scaffolds, suspended scaffolds, mobile scaffolds, aerial lifts, and other scaffold-related equipment covered by Subpart L.
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General-purpose scaffolding and associated components, including access platforms, working platforms, couplers, prefabricated systems, suspended scaffolds, and special-purpose arrangements covered by the applicable part.
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| Load classification or minimum load basis |
Uses scaffold load classes with uniformly distributed working loads from 0.75 kN/m² to 6.00 kN/m² for Classes 1 through 6. The selected class should reflect workers, materials, equipment, and operations.
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Each scaffold and scaffold component must support its own weight plus at least 4 times the maximum intended load. Platforms must support intended loads without failure or excessive displacement.
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Design loads depend on the scaffold type, duty classification, platform arrangement, height, environmental conditions, and the applicable part of AS/NZS 1576. The duty rating must be selected for the actual work and stored materials.
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| Platform width and usable working area |
Width is selected using defined width classes and the intended use. The platform must provide sufficient room for personnel, materials, access, and safe movement; the scaffold configuration must be checked against the selected load class.
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Each platform and walkway generally must be at least 18 in (457 mm) wide, subject to specific exceptions. Platforms must be fully planked or decked within the guardrails unless an allowed exception applies.
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Platform dimensions and clearances are determined by the scaffold duty, configuration, access requirements, and applicable construction provisions. The selected platform components must match the specified system and duty classification.
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| Guardrails and edge protection |
Requires collective protection against falls, including guardrails, intermediate protection, and toe-board or equivalent arrangements where required by the scaffold design and risk assessment. Dimensions are determined by the applicable configuration and national rules.
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Toprails are generally required at 38–45 in (0.97–1.14 m) above the platform. Midrails are generally required approximately halfway between the toprail and platform. Toeboards or equivalent protection are required where falling-object hazards exist.
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Requires compliant guardrails, midrails, toeboards, and other edge protection appropriate to the scaffold arrangement and fall hazard. Component dimensions, strength, and installation details must follow the applicable AS/NZS 1576 requirements.
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| Access requirements |
Safe access must be integrated into the scaffold design. Ladders, stairways, ramps, and access openings must be arranged so that users are protected from falls and the access route remains usable under the intended loading.
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Access must be provided when platforms are more than 2 ft (0.6 m) above or below a point of access. Permitted methods include ladders, stairways, ramps, walkways, integral prefabricated frames, and approved personnel hoists, subject to detailed conditions.
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Access components and access openings must be designed and installed for the intended scaffold type, height, and duty. Stairs, ladders, platforms, and gates must comply with the relevant provisions of the AS/NZS 1576 series.
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| Stability, ties, and bracing |
Stability must be verified for vertical and horizontal loads, wind, eccentric loading, erection stages, and service conditions. Ties, anchors, bracing, base supports, and connections are selected from the design calculation and configuration.
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Supported scaffolds with a height-to-base ratio greater than 4:1 must be restrained from tipping by guying, tying, bracing, or equivalent means. The scaffold must be securely attached to the structure when required by the rule.
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Stability provisions include suitable foundations, soleplates or base arrangements, ties, braces, anchors, and protection against movement. The required arrangement depends on height, exposure, scaffold geometry, imposed loads, and wind conditions.
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| Wind and environmental loading |
Wind actions, exposure, sheeting or containment, working conditions, and out-of-service conditions must be included in the design. Wind effects can substantially change tie spacing, bracing, anchorage, and allowable configuration.
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Scaffolds must be capable of supporting imposed loads and foreseeable environmental effects. Employers must address high winds, storms, ice, snow, and other conditions that could affect safe use; suspended scaffold work has additional wind-related limits.
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Wind and other environmental actions must be considered for the location, height, configuration, screening, containment, and service condition. Local wind exposure can require a project-specific engineering design.
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| Component compatibility |
Components must be compatible with the designed scaffold system and provide the required structural performance. Mixing components from different systems should be supported by technical documentation and engineering verification.
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Components must be compatible and capable of supporting the required loads. Mixing manufacturer systems or dissimilar components is permitted only when the resulting scaffold maintains the required structural integrity and compliance.
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Components must be suitable for the applicable scaffold system and duty. Interchangeability, coupler use, prefabricated frames, planks, ties, and accessories should be confirmed against the relevant part and engineering documentation.
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| Inspection and competent-person requirements |
Inspection, maintenance, and control arrangements should be established for erection, alteration, use, adverse weather, impact, and dismantling. National occupational-safety legislation may define the formal inspection interval and responsible person.
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A competent person must inspect scaffolds, scaffold components, and associated equipment for visible defects before each work shift and after any occurrence that could affect structural integrity. Defective items must be repaired, replaced, or removed from service.
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Inspection and maintenance must be performed at the intervals and by the responsible persons required by the applicable jurisdiction and standard provisions. Special inspections are needed after alteration, damage, impact, severe weather, or other conditions affecting safety.
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| Erection, alteration, and dismantling |
Work must follow the design configuration and an appropriate erection sequence. Temporary stability during incomplete stages, access, fall prevention, component handling, and dismantling must be addressed.
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Erection, moving, dismantling, or alteration must be performed under the supervision and direction of a competent person. Fall protection is generally required for employees at more than 10 ft (3.1 m) above a lower level, subject to specified exceptions.
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Erection, alteration, and dismantling must follow the applicable design, sequence, access controls, fall-prevention measures, and site procedures. Special configurations should be supported by competent technical design.
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| Falling-object protection |
Toe-boards, brick guards, screens, fans, covered walkways, exclusion zones, or other measures may be required according to the risk, platform arrangement, materials, and project conditions.
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Toeboards are generally required where people below could be exposed to falling objects. Additional protection may include barricades, debris nets, canopies, screens, or prohibiting access below the scaffold.
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Falling-object controls must be selected for the work activity and site exposure. Toe-boards, containment, covered access, exclusion zones, or other protective measures may be required by the standard and local safety rules.
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| Electrical clearance |
Clearances from electrical conductors must comply with applicable national electrical and occupational-safety requirements. The scaffold design should account for erection, use, dismantling, conductive components, and possible movement.
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Minimum clearance from energized power lines is generally 10 ft (3.1 m) for lines up to 50 kV, with greater distances required for higher voltages. De-energizing, relocating, or protecting the line may change the applicable control.
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Electrical clearances must comply with applicable Australian or New Zealand electrical-safety legislation and project controls. Metallic scaffolds should be treated as conductive structures unless the authority having jurisdiction confirms otherwise.
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| Best component-selection priority |
Select the load class, width class, platform, guardrail, tie, brace, base, and access components as one engineered configuration. Verify wind, service, and out-of-service conditions.
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Select components that satisfy the OSHA load factor, platform, guardrail, access, stability, inspection, and electrical-clearance requirements. Confirm whether state-plan or local requirements are more stringent.
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Select components by the applicable AS/NZS 1576 part, scaffold duty, geometry, wind exposure, access arrangement, and local statutory requirements. Obtain engineering verification for non-standard or mixed configurations.
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| Global project caution |
EN 12811-1 is not a universal substitute for national law. Confirm the project country’s occupational-safety rules, product conformity requirements, wind criteria, and inspection obligations.
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OSHA compliance applies to work within OSHA jurisdiction and may be supplemented by state-plan rules, local regulations, engineering requirements, and client standards.
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AS/NZS 1576 should be applied together with the applicable Australian or New Zealand legislation, site rules, engineer’s design, and authority requirements. Do not assume automatic equivalence with EN or OSHA criteria.
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