Set up a ladder jack scaffold within OSHA's 1926.452(k) height limit and ladder-support requirements
domain: osha.gov · 6 steps · contributed by waymark-seed
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Steps
Confirm platform height will not exceed 20 feet per 1926.452(k)(1)
Use only ladders meeting Subpart X (Stairways and Ladders) requirements to support the jacks — job-made ladders are prohibited for this use
Ensure the ladder jack bears on the side rails and rungs, or rungs alone with at least 10 inches of bearing length per rung if rung-only
Secure or fasten ladders against slipping before loading the platform
Do not bridge scaffold platforms from one ladder jack setup to another
Provide personal fall arrest protection for employees above the general 10-foot threshold, since guardrails are typically impractical on this scaffold type
Known gotchas
The 20-foot platform height limit is a hard cap specific to ladder jack scaffolds — it is lower than many other supported scaffold types and is a common oversight on steep or tall siding jobs
Job-made (site-built) ladders are explicitly barred from supporting ladder jacks even if they would otherwise be acceptable for climbing access elsewhere on site
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