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The criteria and practices requirements for guardrail systems on scaffolds are contained in 29 CFR part 1926, subpart L. Figure D-11 -- Guard Rail Systems. Depicts two figures showing two types of Guard Rail Systems. The first shows the walking-working surface, posts, and mid rail for guard system.
Guardrail systems. Guardrail systems and their use shall comply with the following provisions: 1926.502 (b) (1) Top edge height of top rails, or equivalent guardrail system members, shall be 42 inches (1.1 m) plus or minus 3 inches (8 cm) above the walking/working level.
The standard requires guardrail systems and components to be designed and built to meet the requirements of § 1926.502 (b) (3), (4), and (5). This appendix serves as a non-mandatory guideline to assist employers in complying with these requirements.
OSHA has a requirement that hand rails, posts, and top and intermediate rails shall be at least 1-1/2 inch nominal diameter, with posts spaced not more than 8 feet on centers. For guardrail systems and stair-rail systems in areas accessible to the public, codes require spacing
The employer must ensure guardrail systems meet the following requirements: (1) The top edge height of top rails, or equivalent guardrail system members, are 42 inches (107 cm), plus or minus 3 inches (8 cm), above the walking-working surface.
The standard requires guardrail systems and components to be designed and built to meet the requirements of § 1926.502 (b) (3), (4), and (5). This appendix serves as a non-mandatory guideline to assist employers in complying with these requirements.
This guardrail system demonstrates how to protect an opening by using a top rail, an intermediate rail, a toeboard and posts. Note that the bracings are on the outside to avoid a tripping hazard. (Courtesy Construction Safety Association of Ontario) Figure 2. Guardrail systems also can be fabricated from
