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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.
Where workers on a construction site are exposed to vertical drops of 6 feet or more, OSHA requires that employers provide fall protection in one of three ways before work begins: Placing guardrails around the hazard area. Deploying safety nets.
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.
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
4. All openings should be protected by a guardrail system consisting of a top rail, an intermediate rail, a toeboard and posts (Figure 1). The top rail should have a vertical height of approximately 42 inches (+/-3 inches) from the top rail surface to the floor. The top railing should have a smooth surface.
The employer must ensure: (i) Each employee less than 4 feet (1.2 m) above dangerous equipment is protected from falling into or onto the dangerous equipment by a guardrail system or a travel restraint system, unless the equipment is covered or guarded to eliminate the hazard.
