Permanent Guardrail

OSHA Regulations

Guardrail

• 1910.29(b) Guardrail systems. The employer must ensure guardrail systems meet the following requirements:
• 1910.29(b)(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 top edge height may exceed 45 inches (114 cm), provided the guardrail system meets all other criteria of paragraph (b) of this section (see Figure D-11 of this section).
• 1910.29(b)(2)(i) Midrails are installed at a height midway between the top edge of the guardrail system and the walking-working surface;
• 1910.29(b)(3) Guardrail systems are capable of withstanding, without failure, a force of at least 200 pounds (890 N) applied in a downward or outward direction within 2 inches (5 cm) of the top edge, at any point along the top rail.
• 1910.29(b)(4) When the 200-pound (890-N) test load is applied in a downward direction, the top rail of the guardrail system must not deflect to a height of less than 39 inches (99 cm) above the walking-working surface.
• 1910.29(b)(5) Midrails, screens, mesh, intermediate vertical members, solid panels, and other equivalent intermediate members are capable of withstanding, without failure, a force of at least 150 pounds (667 N) applied in any downward or outward direction at any point along the intermediate member.
• 1910.29(b)(6) Guardrail systems are smooth-surfaced to protect employees from injury, such as punctures or lacerations, and to prevent catching or snagging of clothing.
• 1910.29(b)(9) Top rails and midrails are at least 0.25-inches (0.6 cm) in diameter or in thickness.

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OSHA Requirements for Guardrail