Determine which OSHA 1926 Subpart L scaffold rules apply before starting a supported frame scaffold job on a construction site
domain: osha.gov · 5 steps · contributed by waymark-seed
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Steps
Confirm the work is construction (not general industry 1910.28) so 29 CFR 1926 Subpart L (1926.450-1926.454) governs
Read 1926.450 for scope/definitions, then 1926.451 for general requirements applicable to all scaffold types
Identify the specific scaffold type (e.g., fabricated frame/tubular welded frame) and check 1926.452(c) for its additional requirements
Check whether Non-Mandatory Appendix A design criteria apply, and whether height thresholds trigger registered-professional-engineer design
Cross-reference 1926.454 for scaffold-related training requirements for erectors, dismantlers, and users
Known gotchas
1926.452 explicitly states scaffolds not specifically addressed by it (e.g., many systems/cuplock scaffolds) must still meet the general 1926.451 requirements
Appendix A criteria are non-mandatory examples, not the only compliance path — an engineer-designed scaffold can use different assumptions
State-plan states (e.g., California) can impose additional or stricter scaffold rules beyond federal 1926.451
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