1926.451(g)(4)(ix): Strength of Guardrail Midrails and Screens
Midrails, screens, mesh, intermediate vertical members, solid panels and similar parts of a scaffold guardrail must withstand a force in any downward or horizontal direction without failure. That force is at least 75 pounds for guardrails with a minimum 100 pound toprail capacity, and at least 150 pounds for a minimum 200 pound toprail capacity.
Key takeaways
- 1926.451(g)(4)(ix) is part of OSHA's construction standards (29 CFR Part 1926, Subpart L).
- OSHA cited it 7 times in the last 3 years, in 7 inspections, with $39,789 in current penalties.
- 2 deaths are linked to inspections that cited this rule.
- Related part: 1926.451(g) Fall protection (2,811 citations).
- Free 5-minute toolbox talk for your crew below.
In this article
What this rule covers
29 CFR 1926.451(g)(4)(ix) is one requirement inside 1926.451 General requirements, an OSHA construction standard (Part 1926, Subpart L). The official text below is copied word for word from the Electronic Code of Federal Regulations (eCFR). The numbers, injury cases and training on this page show how OSHA enforces it on real job sites.
Official text
(ix) Midrails, screens, mesh, intermediate vertical members, solid panels, and equivalent structural members of a guardrail system shall be capable of withstanding, without failure, a force applied in any downward or horizontal direction at any point along the midrail or other member of at least 75 pounds (333 n) for guardrail systems with a minimum 100 pound toprail capacity, and at least 150 pounds (666 n) for guardrail systems with a minimum 200 pound toprail capacity. 7 citations
Source: eCFR, text current as of 2026-10-15. Read all of 1926.451.
Injuries linked to this rule
2 deaths are linked to inspections where OSHA cited 1926.451(g)(4)(ix).
On April 8, 2024, an employee working for a masonry contractor was applying stucco to a building. The employee was working from the 5th buck of a five-buck-high tubular welded frame scaffold. Coworkers recently observed the employee on his knees while working. The mid-rail guardrail…
Full case list with employer, penalty, filters and download is part of OSHA Data (Purple Belt).
Unlock with Purple BeltWhere and how often it was cited
Free toolbox talk
A 5-minute crew talk on 1926.451(g)(4)(ix), plus alerts when this rule changes. Free.
OSHA interpretation letters
- Whether there is a conflict between provisions in 1926.451 regarding the use of screening. (2005-05-11)
- Whether scaffold components may be loaded in excess of minimum load ratings specified in 29 CFR Part 1926 Subpart L; whether a safety factor must be added to such load ratings; Non-Mandatory Appendix A. (2005-04-08)
- Fall protection requirements for workers constructing a water tower while on a scaffold. (2005-04-05)
Related parts of this rule
- 1926.451(g) Fall protection 2,811 citations
- 1926.451(g)(1) 2,215 citations
- 1926.451(g)(1)(vii) 673 citations
- 1926.451(g)(4) 516 citations
- 1926.451(g)(4)(i) 392 citations
- 1926.451(g)(1)(i) 149 citations
- 1926.451(g)(1)(vi) 65 citations
- 1926.451(g)(2) 46 citations
- 1926.451(g)(3) 33 citations
- 1926.451(g)(4)(iv) 32 citations
- 1926.451(g)(4)(iii) 21 citations
- 1926.451(g)(3)(i) 20 citations
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Frequently asked questions
How strong must midrails be?
At least 75 pounds for systems with a minimum 100 pound toprail capacity, and at least 150 pounds for a minimum 200 pound toprail capacity.
In what direction is the force applied?
In any downward or horizontal direction at any point along the midrail or other member.
What parts does this cover?
Midrails, screens, mesh, intermediate vertical members, solid panels and equivalent structural members.
About this page
Sources
- 29 CFR 1926.451 (eCFR), text current as of 2026-10-15
- U.S. Department of Labor enforcement data: OSHA inspections, citations and accident records, copied nightly; data as of 2026-10-19
3-year window. Federal OSHA only; state-plan rules are not counted. Plain-language text is a summary, not legal advice; the official text controls. Black Belt Safety is not part of OSHA or the Department of Labor.