Skip to content
All safety questions
Asked by a personGeneral — US and Canadaen-US

what are guard rail requirements

A person submitted this question to Rosie's free generator. The asker's identity is neither imported nor published.

Rosie's answer

Published by SALUS

Guardrail systems are required to have a top edge height of 42 inches (1.1 m) plus or minus 3 inches (8 cm) above the walking/working level [1]. The height of the top edge may exceed 45 inches if the guardrail system meets all other criteria [1]. When employees are using stilts, the top edge height of the top rail should be increased by an amount equal to the height of the stilts [1]. Midrails, screens, mesh, intermediate vertical members, or equivalent intermediate structural members must be installed between the top edge of the guardrail system and the walking/working surface when there is no wall or parapet wall at least 21 inches (53 cm) high [1].

Additional guardrail requirements include:

  • Midrails should be installed at a height midway between the top edge of the guardrail system and the platform surface [2].
  • Screens and mesh should extend from the top edge of the guardrail system to the scaffold platform, along the entire opening between the supports [2].
  • Intermediate members should not be more than 19 inches (48 cm) apart [2].
  • Guardrail systems must be capable of withstanding a force of at least 200 pounds (890 N) applied within 2 inches (5.1 cm) of the top edge, in any outward or downward direction, at any point along the top edge [3].
  • When the 200-pound test load is applied downward, the top edge of the guardrail should not deflect to a height less than 39 inches (1.0 m) above the walking/working level [3].
  • Midrails, screens, mesh, intermediate vertical members, solid panels, and equivalent structural members must withstand a force of at least 150 pounds (666 N) applied in any downward or outward direction [3].
  • Guardrail systems should be surfaced to prevent injury and snagging of clothing [3].
  • The ends of top rails and midrails should not overhang terminal posts unless it doesn't create a projection hazard [3].
  • Steel or plastic banding should not be used as top rails or midrails [3].
  • Top rails and midrails should be at least one-quarter inch (0.6 cm) nominal diameter or thickness [3].
  • If wire rope is used for top rails, it should be flagged at intervals of not more than 6 feet with high-visibility material [3].
  • A chain, gate, or removable guardrail section should be placed across the access opening between guardrail sections when hoisting operations are not taking place in hoisting areas [3].
  • Guardrail systems should be erected on all unprotected sides or edges of holes [3].
  • When guardrail systems are used around holes for the passage of materials, the hole should have no more than two sides with removable guardrail sections. When the hole is not in use, it should be closed with a cover, or a guardrail system should be provided along all unprotected sides or edges [3].

For wood railings, wood components should be minimum 1500 lb-ft/in2 fiber (stress grade) construction grade lumber; the posts should be at least 2-inch by 4-inch (5 cm x 10 cm) lumber spaced not more than 8 feet (2.4 m) apart on centers; the top rail should be at least 2 inch by 4-inch (5 cm x 10 cm) lumber, the intermediate rail should be at least 1-inch by 6 inch (2.5 cm x 15 cm) lumber [4].

For pipe railings, posts, top rails, and intermediate railings should be at least one and one-half inches nominal diameter (schedule 40 pipe) with posts spaced not more than 8 feet (2.4 m) apart on centers [4].

For structural steel railings, posts, top rails, and intermediate rails should be at least 2 inch by 2-inch (5 cm x 10 cm) by 3/8-inch (1.1 cm) angles, with posts spaced not more than 8 feet (2.4 m) apart on centers [4].

4 source record(s)

Sources used for this answer

[1] Rules for the Administration of the Oregon Safe Employment Act (Construction, Division 3, OSHA Oregon)

Page 600

Open source document

Source excerpt

Oregon Occupational Safety and Health Division Oregon Administrative Rules ## 1926.502 Fall Protection Systems Criteria and Practices - (a) General. - (1) Fall protection systems required by this part shall comply with the applicable provisions of this section. - (2) Employers shall provide and install all fall protection systems required by this subpart for an employee, and shall comply with all other pertinent requirements of this subpart before that employee begins the work that necessitates the fall protection. - (b) Guardrail systems. Guardrail systems and their use shall comply with the following provisions: - (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. When conditions warrant, the height of the top edge may exceed the 45-inch height, provided the guardrail system meets all other criteria of this paragraph. - Note: When employees are using stilts, the top edge height of the top rail, or equivalent member, shall be increased an amount equal to the height of the stilts. - (2) Midrails, screens, mesh, intermediate vertical members, or equivalent intermediate structural members shall be installed between the top edge of the guardrail system and the walking/working surface when there is no wall or parapet wall at least 21 inches (53 cm) high. - (i) Midrails, when used, shall be installed at a height midway between the top edge of the guardrail system and the walking/working level. - (ii) Screens and mesh, when used, shall extend from the top rail to the walking/ working level and along the entire opening between top rail supports. - (iii) Intermediate members (such as balusters), when used between posts, shall be not more than 19 inches (48 cm) apart. - (iv) Other structural members (such as additional midrails and architectural panels) shall be installed such that there are no openings in the guardrail system that are more than 19 inches …

[2] Rules for the Administration of the Oregon Safe Employment Act (Construction, Division 3, OSHA Oregon)

Page 601

Open source document

Source excerpt

Division 3 Oregon Administrative Rules Oregon Occupational Safety and Health Division - (3) Guardrail systems shall be capable of withstanding, without failure, a force of at least 200 pounds (890 N) applied within 2 inches (5.1 cm) of the top edge, in any outward or downward direction, at any point along the top edge. - (4) When the 200 pound (890 N) test load specified in paragraph (b)(3) of this section is applied in a downward direction, the top edge of the guardrail shall not deflect to a height less than 39 inches (1.0 m) above the walking/working level. Guardrail system components selected and constructed in accordance with the Appendix B to subpart M of this part will be deemed to meet this requirement. - (5) Midrails, screens, mesh, intermediate vertical members, solid panels, and equivalent structural members shall be capable of withstanding, without failure, a force of at least 150 pounds (666 N) applied in any downward or outward direction at any point along the midrail or other member. - (6) Guardrail systems shall be so surfaced as to prevent injury to an employee from punctures or lacerations, and to prevent snagging of clothing. - (7) The ends of all top rails and midrails shall not overhang the terminal posts, except where such overhang does not constitute a projection hazard. - (8) Steel banding and plastic banding shall not be used as top rails or midrails. - (9) Top rails and midrails shall be at least one-quarter inch (0.6 cm) nominal diameter or thickness to prevent cuts and lacerations. If wire rope is used for top rails, it shall be flagged at not more than 6-foot intervals with high-visibility material. - (10) When guardrail systems are used at hoisting areas, a chain, gate or removable guardrail section shall be placed across the access opening between guardrail sections when hoisting operations are not taking place. - (11) When guardrail systems are used at holes, they shall be erected on all unprotected sides or edges of the hole. - …

[3] Rules for the Administration of the Oregon Safe Employment Act (Construction, Division 3, OSHA Oregon)

Page 536

Open source document

Source excerpt

## GENERAL REQUIREMENTS L - (iii) When lanyards are connected to horizontal lifelines or structural members on a single-point or two-point adjustable suspension scaffold, the scaffold shall be equipped with additional independent support lines and automatic locking devices capable of stopping the fall of the scaffold in the event one or both of the suspension ropes fail. The independent support lines shall be equal in number and strength to the suspension ropes. - (iv) Vertical lifelines, independent support lines, and suspension ropes shall not be attached to each other, nor shall they be attached to or use the same point of anchorage, nor shall they be attached to the same point on the scaffold or personal fall arrest system. - (4) Guardrail systems installed to meet the requirements of this section shall comply with the following provisions (guardrail systems built in accordance with Appendix A to this subpart will be deemed to meet the requirements of paragraphs (g)(4)(vii), (viii), and (ix) of this section): - (i) Guardrail systems shall be installed along all open sides and ends of platforms. Guardrail systems shall be installed before the scaffold is released for use by employees other than erection/dismantling crews. - (ii) The top edge height of toprails or equivalent member on supported scaffolds manufactured or placed in service after January 1, 2000 shall be installed between 38 inches (0.97 m) and 45 inches (1.2 m) above the platform surface. The top edge height on supported scaffolds manufactured and placed in service before January 1, 2000, and on all suspended scaffolds where both a guardrail and a personal fall arrest system are required shall be between 36 inches (0.9 m) and 45 inches (1.2 m). When conditions warrant, the height of the top edge may exceed the 45-inch height, provided the guardrail system meets all other criteria of paragraph (g)(4). - (iii) When midrails, screens, mesh, intermediate vertical members, solid panels, or equivale…

[4] Rules for the Administration of the Oregon Safe Employment Act (Construction, Division 3, OSHA Oregon)

Page 622

Open source document

Source excerpt

Oregon Occupational Safety and Health Division Oregon Administrative Rules Division 3 ## Appendix B to Subpart M - Guardrail Systems Non-Mandatory Guidelines for Complying with 1926.502(b) 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. An employer may use these guidelines as a starting point for designing guardrail systems. However, the guidelines do not provide all the information necessary to build a complete system, and the employer is still responsible for designing and assembling these components in such a way that the completed system will meet the requirements of 1926.502(b)(3), (4), and (5). Components for which no specific guidelines are given in this Appendix (e.g., joints, base connections, components made with other materials, and components with other dimensions) must also be designed and constructed in such a way that the completed system meets the requirements of 1926.502. - (1) For wood railings: Wood components shall be minimum 1500 lb-ft/in2 fiber (stress grade) construction grade lumber; the posts shall be at least 2-inch by 4-inch (5 cm x 10 cm) lumber spaced not more than 8 feet (2.4 m) apart on centers; the top rail shall be at least 2 inch by 4-inch (5 cm x 10 cm) lumber, the intermediate rail shall be at least 1-inch by 6 inch (2.5 cm x 15 cm) lumber. All lumber dimensions are nominal sizes as provided by the American Softwood Lumber Standards, dated January 1970. - (2) For pipe railings: posts, top rails, and intermediate railings shall be at least one and one-half inches nominal diameter (schedule 40 pipe) with posts spaced not more than 8 feet (2.4 m) apart on centers. - (3) For structural steel railings: posts, top rails, and intermediate rails shall be at least 2 inch by 2-inch (5 cm x 10 cm) by 3/8-inch (1.1 cm) angles, with posts s…

Related Q&A

Keep exploring.

Human questionGeneral

can you create a toolbox talk that refers to birds safety pyramid?

Bird's Safety Pyramid: Preventing Incidents and Accidents ========================================================= *Date:** 2026-01-08 *Duration:** \[DURATION] minutes *Presenter:** \[PRESENTER NAME] *Location:** \[LOCATION] Objective To understand and apply the principles of the Bird's Safety Pyramid to prevent

Read the thread
Human questionUS

Write a safe work procedure for jumpers in the elevator industry

Safe Work Procedure: Elevator Jumpers Document Number: [SWP-NUMBER] Revision Date: [DATE] Next Review Date: [NEXT REVIEW DATE] Department: [DEPARTMENT NAME] 1. Scope This Safe Work Procedure (SWP) outlines the safety requirements and procedures for elevator "jumpers," which involves temporarily bypassing elevator

Read the thread
Human questionGeneral

Oil and gas industry water transfer water truck safety with jsa compliance

Toolbox Talk: Water Truck Safety in Oil and Gas Industry *Date:** [DATE] *Duration:** [DURATION] minutes *Presenter:** [PRESENTER NAME] *Location:** [LOCATION] Objective To ensure all personnel understand the safety protocols and Job Safety Analysis (JSA) compliance requirements when operating water trucks for water

Read the thread
Human questionGeneral

Lab

Toolbox Talk: Laboratory Safety *Date:** [DATE] *Duration:** [DURATION] minutes *Presenter:** [PRESENTER NAME] *Location:** [LOCATION] Objective The objective of this toolbox talk is to provide an overview of laboratory safety, including hazard identification, control measures, safe work procedures, and emergency

Read the thread
Human questionGeneral

Write a toolbox talk on flaggers safety

Toolbox Talk: Flaggers Safety *Date:** [DATE] *Duration:** [DURATION] minutes *Presenter:** [PRESENTER NAME] *Location:** [LOCATION] Objective The objective of this toolbox talk is to ensure that all participants understand the critical role of flaggers in maintaining safety in work zones, the hazards they face, and

Read the thread
Discussion thread

Add your experience.

Community answers can add practical context. They are moderated, but they are not SALUS-reviewed safety guidance.

New contributions are temporarily closed while the moderation queue is configured.

Community answers(0)

No community answers have been approved yet.

Comments on Rosie's answer(0)

No comments have been approved yet.

Ready to put operational safety to work?

Join 400K users across 150K sites already on SALUS.

Request a demo

No commitment · 30-minute personalized walkthrough