Ladder rungs or steps, and guardrails or railings of any kind, should not be used for fall arrest anchorages unless they are designed and labeled specifically for that purpose. Steel members should be used for anchorage-point structures whenever possible. Masonry fittings can be suitable when used with through-bolts and plate washers. Expanded anchor bolts should be specified by a registered professional engineer.
See “Introduction to Fall Protection, 4th Edition” Appendix C page 514.
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