osha safety cable post spacing
Designing an OSHA compliant railing system is equally important; post-spacing, material choice, finish, toeboard, and gates are all things to consider when designing your guardrail. Hispassion is to be a resource his clients can count on when loss control and risk management consulting is needed. Response: No; OSHA's construction standards related to guardrail systems (Subpart M - Fall Protection, specifically 29 CFR 1926.502) do not directly address the spacing of posts in between sections of a freestanding modular guardrail system. Some areas require taller guardrail. The employer must ensure: Platforms used with fixed ladders provide a horizontal surface of at least 24 inches by 30 inches (61 cm by 76 cm). The employer may use chains or gates instead of a removable guardrail section at hoist areas if the employer demonstrates the chains or gates provide a level of safety equivalent to guardrails. Learn the Differences Between IBC and OSHA Stairs? One stair rail system with handrail on each open side and one intermediate handrail located in the middle of the stair. Next, check and use torque wrench to retighten nuts to recommended torque. In-fill panels, such as mesh or screens, must extend from the walking surface to the top-rail and the entire opening between vertical rails. Toeboards must be 3.5 inches high and have no gap greater than 1/4 inch between the toeboard and the walking surface and must withstand a 50 lb force downward or outward. Rungs, cleats, and steps of portableladders and fixed ladders should be a minimum of 10 inches (25 cm) apart and no larger than 14 inches (36 cm) apart, as measured between center lines of the rungs, cleats, and steps. There can be a lot of rules to follow, but knowing and understanding them is crucial to workplace safety.Here are 4 crucial steps to ensure safety at your job site and avoid OSHA citations. Prefabricated Metal Stairs, Easy to Assemble and Ready to Ship. Gabe Mariani is a railroader who has been writing for school and for pleasure for over 15 years. Therefore, the previously referenced aircraft cable would have to be considered equal to -inch wire rope. 2800 Grays Ferry Avenue The chain or cable shall be equipped with flagging or some other means of increasing their visibility. Total height measurement 42 IN (3 IN) (107 CM 8 CM). No opening in a stair rail system exceeds 19 inches (48 cm) at its least dimension. Diamond Tool and Fasteners, Inc. OSHA1910.25covers standards for all stairways (including a standard, spiral, ship, and alternating tread-type stairs). LINDA R. ANKU Thank you for your interest in occupational safety and health. Have open risers if the tread depth is less than 9.5 inches (24 cm); Have a minimum tread width of 7 inches (18 cm), measured at the leading edge of the tread (i.e., nosing). However, they must be continuously inspected and maintained to ensure compliance with OSHA 1926 Subpart M standards. The fifth is Basked Guard Hoop showing Angle from Ladder. If posts are spaced more than 8-feet on center, it will no longer be OSHA compliant. This could add additional hazards to the working area. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. It is designed to be used anywhere a cable must terminate. RAILINGS open-sided stairs < 44" require 1 stair rail/side; open-sided stairs > 44" require 1 stair rail and 1 separate handrail/side. However, fall protection, whether accomplished by guardrails, nets, personal fall arrest systems, etc., is nonetheless required on the roof level at fall heights over 15 feet (with certain exceptions) pursuant to the requirements of 1926.760(a)(1). All Rights Reserved. Stair rail or stair rail systemmeans a barrier erected along the exposed or open side of stairways to prevent employees from falling to a lower level. Steel banding and plastic banding are not used for top rails or midrails. Dear Mr. Russell: Cable Railing Standards OSHA regulations state that cable railings must have a smooth top rail at 42 inches above the floor that is able to withstand at least 200 pounds of pressure from any direction. However, no such carte blanche rule exists and never has in the OSHA regulations. (3) The maximum deflection of the top rail when a load of 200 pounds is applied in any direction at any point on the top rail shall not exceed 3 inches in one direction which includes the free hanging sag in the wire rope. Where tools, equipment, or materials are piled higher than the top of the toeboard, paneling or screening is installed from the toeboard to the midrail of the guardrail system and for a length that is sufficient to protect employees below. Commonwealth of Virginia Depicts a well squared off. Toeboards may be omitted around vehicle repair, service, or assembly pits when the employer can demonstrate that a toeboard would prevent access to a vehicle that is over the pit. It is a common misconception that the worker is safe and in compliance as long as a distance of 6 ft is maintained from an unprotected edge. Handrails and stair rail systems are smooth-surfaced to protect employees from injury, such as punctures or lacerations, and to prevent catching or snagging of clothing. Fall protection systems and falling object protection - criteria and practices. It should be securely fastened in place and with not more than 1/4-inch clearance above floor level. Depicts Five diagrams. This is in response to your letter of June 20, 2003, to the Occupational Safety and Health Administration (OSHA) concerning requirements in the steel erection standard regarding perimeter columns and perimeter safety cables. The most common issues observed while performing safety audits on cable guardrails include: Excessive Deflection or Sagging incorporate turnbuckles to allow for easy tightening of the cable. You stated that the freestanding guardrail system meets the 200 pound (890 N) force requirements required by 29 CFR 1926.502(b)(3) and 1910.23(e)(3)(iv) and that you have twice had engineering firms conduct calculations and verify compliance. Chain shall be not less than 1/4 inch alloy steel. OSHA also requires the surface of the railing itself must be smooth to protect employees from injuries; such as cuts, punctures and to prevent snagging. The Corner Post System comes with pre-set cable tie-offs to meet OSHA's required 42" top rail and 21" mid rail heights, but can be adjusted when floor thickness changes. Section 1926.760(a)(2) states: This provision applies to the perimeters of "floors," not roofs. HEIGHT CLEARANCE minimum 6'6" clearance from nose of tread . 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). OSHA addresses stacks of items, including pallets, in standard 1910.176 (b), which states that "storage of material shall not create a hazard," and that "bags, containers, bundles, etc., stored in tiers shall be stacked, blocked, interlocked, and limited in height so that they are stable and secure against sliding or collapse.". Specifically, the following sections are the most relevant to railing and guardrail for fall protection. Therefore, it does not require perimeter safety cables on the roof level. Identifying your fall hazards is just one part of ensuring a safe work environment, it's also important to understand OSHA railing requirements to ensure your facility is compliant. It is important to note that you should always follow the manufacturer's installation instructions. When it comes to keeping your workplace productive theres nothing more important than safety. -Christopher, Timberline Communications Inc. OSHA regulations simplified for a safe and compliant workplace. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov. Mr. B. J. Newton Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. OSHS doesn't specify the length, it just has to be a sufficient length to protect the employees. Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Severe Storm and Flood Recovery Assistance. He holds a Bachelor of Arts in history from Widener University. Top railing height must be 39 inches and 45 inches above the walking-working surface. TO: ALL AREA DIRECTORS Paragraph 1926.500(f)(l)(vi) provides for the utilization of types, sizes and arrangements of railing construction provided they meet the conditions established in sub-paragraph a thru d. In construction the use of cables or chains to guard door and wall openings is common practice; however, unless these chains or cables are of sufficient size and strength to support the loads which might be imposed, they imply a security which is not present. This is in response to your letter of June 29, concerning the acceptability of wire rope and/or cable as a method of perimeter protection for a building under construction. You must have JavaScript enabled in your browser to utilize the functionality of this website. Simplified Safety was very knowledgeable in terms of OSHA requirements and provided a product that would satisfy OSHA requirements. In addition, you submitted information regarding your freestanding guardrail system as well as a photograph of what appears to be a typical installation of the guardrail system. Sincerely, The standard, as written, could be enforced so that no deflection is permitted. (2) The wire rope shall be free of sharp edges, burrs, or projections which may be a hazard. GENERAL stairs 4 H or w/3 treads and 4 risers require a stair rail/stair rail system, TREADS must support 1,000 lb, minimum depth 9.5, RISERS must be uniform between landings, 30-50 deg, 9.5 H, RAILINGS open-sided stairs < 44 require 1 stair rail/side; open-sided stairs > 44 require 1 stair rail and 1 separate handrail/side, HEIGHT CLEARANCE minimum 66 clearance from nose of tread to overhead obstruction, SHIP STAIRS only usable where standard stairs are impractical, 50-70 deg, rise 6.5-11, tread 4, width 18, GENERAL a platform or runway higher than 4 requires guardrails, no substitution (i.e., no chains or other barriers), PLATFORMS must be width of stairs and 30 deep, DOOR CLEARANCE 22 from edge of open door to edge of platform. Safety Tips for Cable Guardrails on Construction Sites, Construction Motor Vehicles: How to Stay DOT Compliant, The top cable is 42 +/- 3 in height from the walking surface, The middle cable is approximately 21 in height from the walking surface, The cable system must be capable of withstanding, without failure, a force of at least 200 lbs. Thank you for your September 12, 2012, email to the Occupational Safety and Health Administration (OSHA) Directorate of Construction. 1910.25(b)(3) Stairs have uniform riser heights and tread depths between landings; 1910.25(b)(4) Stairway landings and platforms are at least the width of the stair and at least 30 inches (76 cm) in depth, as measured in the direction of travel; 1910.25(b)(5) When a door or a gate opens directly on a stairway, a platform is provided, and the swing of the door or gate does not reduce the platforms effective usable depth to: 1910.25(b)(5)(i) Less than 20 inches (51 cm) for platforms installed before January 17, 2017; and. Our compliance officers are aware that wire rope is an acceptable method of perimeter protection for buildings under construction. Question: If an employer utilizes a freestanding modular guardrail system, which the manufacturer claims meets OSHA's force/strength requirements, but which is designed such that the main posts' weighted bases allow the main posts to be spaced 6" apart, would this gap be a violation of OSHA's guard rail standards? OSHA requires railing to be .25-inches (.6 cm) in diameter or thickness. Emergency stop devices (buttons, pull-cords and foot pedals) are covered by IEC 60947-5-5, Low voltage switchgear and controlgear, Part 5-5: Control circuit devices and switching elements Emergency stop device with mechanical latching function. Handrails and the top rails of stair rail systems are capable of withstanding, without failure, a force of at least 200 pounds (890 N) applied in any downward or outward direction within 2 inches (5 cm) of any point along the top edge of the rail. The perimeter of the designated area is delineated with a warning line consisting of a rope, wire, tape, or chain that meets the requirements of paragraphs (d)(2) and (3) of this section. Sincerely, Designing an OSHA compliant railing system is equally important; post-spacing, material choice, finish, toeboard, and gates are all things to consider when designing your guardrail. Superior Steel, Inc. Figure D-14 -- Clearances for Fixed Ladders in Wells. 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. Riser height 9.5 inches (24cm) 1910.25(d)(2) Stairwidth a minimum of 22 inches (55 cm) 1910.25(c)(4) Tread depth of a minimum of 9.5 inches (24 cm) 1910.25(c)(3) Stair landings at least the width of the stair. Height of Guard rail is 42 IN (3 IN) (107 CM 8 CM). or ladder safety system provided that the cage or well does not interfere with the operation of the system. Mr. Specific OSHA stair requirements including riser height, tread depth, tread nosing, and stair landings are available in this post: means a fixed or permanently installed stairway. OSHA specifies that red, black and white colors are to be used for danger signs. Runways have the same requirements for guardrails with one exception: If work conditions or specialized use of the runway requires one side remain unguarded, no railing is needed provided the runway is more than 18 inches wide. Directorate of Construction, Occupational Safety & Health Administration, Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Severe Storm and Flood Recovery Assistance. Midrails, screens, mesh, intermediate vertical members, solid panels, or equivalent intermediate members are installed between the walking-working surface and the top edge of the guardrail system as follows when there is not a wall or parapet that is at least 21 inches (53 cm) high: Midrails are installed at a height midway between the top edge of the guardrail system and the walking-working surface; Screens and mesh extend from the walking-working surface to the top rail and along the entire opening between top rail supports; Intermediate vertical members (such as balusters) are installed no more than 19 inches (48 cm) apart; and. Copyright 2023 ErectaStep. Spaces between each post and intermediate vertical member is 19 IN (48 CM) MAX. Have a minimum height of 2.5 inches (6 cm) when used around vehicle repair, service, or assembly pits. The employer must ensure each grab handle: [81 FR 82994-82998, Nov. 18, 2016; 84 FR 68796, Dec. 17, 2019], Occupational Safety & Health Administration. (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. Contact us for expert assistance with your fall arrest, fall restraint and fall protection requirements System Types "L" and "T" Column Style Lifelines View "L" and "T" Column Style Lifelines Continuous Pass Through Systems OSHA Railing requirements for Standard Railing (noted as "Guard" in building codes) : 42 inch minimum height Required if 48 inches or greater drop from walking surface top rail, intermediate rail and posts Intermediate rail at "about halfway up" Must have a toe board OSHA Railing requirements for Stair Railing: ], Occupational Safety & Health Administration, "Floor periphery - safety railing. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov. We're here to help! If you require any additional information regarding this matter, please contact [the Directorate of Construction at 202 693-2020]. 1910.29(i)(6) Ladder safety systems and their support systems are capable of withstanding, without failure, a drop test consisting of an 18-inch (41-cm) drop of a 500-pound (227-kg) weight. Safety Director Is mounted to provide at least 3 inches (8 cm) of clearance from the framing or opening; and. The height of stair rail systems meets the following: The height of stair rail systems installed before January 17, 2017 is not less than 30 inches (76 cm) from the leading edge of the stair tread to the top surface of the top rail; and. 1) safety railing must be -inch in diameter (a plastic coating could be used to bring the diameter up to -inch) 2) the safety railing must be 42 inches high, plus or minus 3 inches 3) the top must not fail and may deflect to a point no lower than 39 inches above the floor when a 200 pound load is imposed on it in a downward or outward direction. This letter constitutes OSHA's interpretation of the requirements discussed. 205 North Fourth Street Requirements for perimeter columns and perimeter safety cables in the Steel Erection standard. ErectaStep also has a line of commercial stairs with OSHA or IBC compliance options. These standards, including 29 CFR 1910.23(e)(3)(ii), only refer to the spacing of posts within the guardrail assembly, which would include the top and intermediate railings, but do not address spacing of the posts in between modular guardrail system sections. NFPA 101: Life Safety Code provides requirements that limit the effects of re and related hazards. Are perimeter safety cables required in this situation under 1926.760(a)(2)? Wire rope and/or cable as a method of perimeter protection for a building under construction. OSHA Standard 29 CFR 1926.750(b)(1)(iii) does not address the issue of deflection. Safety cable guardrails can provide OSHA compliant fall protection for employees on a construction project. Toeboard must be added where there is a hazard and continue along the working area that is exposed. Strength criteria. Plus, it's a safe option for kids and guests of all ages. Answer: The response to this question is a qualified yes. Our letters of interpretation do not create new or additional requirements, but rather explain these requirements and how they apply to particular circumstances. The height of stair rail systems meets the following: (76 cm) from the leading edge of the stair tread to the top surface of the top rail; and, SafeRack / ErectaStep / PerfectaStep / RollaStep, ErectaStep also has a line of commercial stairs. Note to paragraph (g): These systems are initially compliant, but when tampered with or removed by others throughout the course of construction and not replaced properly, they can be a safety concern. OSHA states that railing must withstand a force of 200 lb at any point along the railing. 1926.500, Guardrails, handrails & guards. Laddermeans a device with rungs, steps, or cleats used to gain access to a different elevation. We hope you find this information helpful. If you need additional information, please contact us by fax at: U.S. Department of Labor, OSHA, Directorate of Construction, Office of Construction Standards and Guidance, fax # 202-693-1689. If you're in California, they require residential posts to be a minimum of 42 inches tall. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. Chain shall be not less than 1/4 inch alloy steel. The employer must ensure each cover for a hole in a walking-working surface: 1910.29 (e) (1) Is capable of supporting without failure, at least twice the maximum intended load that may be imposed on the cover at any one time; and 1910.29 (e) (2) Is secured to prevent accidental displacement. Ladderway floor openings are specifically mentioned. One Stair rail system with handrail on open side and one handrail on enclosed side. Your Posts Must Be Tall Enough for Your Application Most state and local codes require railing posts to be 36 inches tall for residential applications. This is in response to the questions posed in the letter from Jay Withrow regarding safety railing(s) required by OSHA Standard 29 CFR 1926.750(b)(1)(iii). A safety railing of -inch wire rope. 1910.29(b)(1) - A standard railing shall consist of a top rail, an intermediate rail, and posts, and shall have a vertical height of 42 inches, plus or minus 3 inches, above the working-walking surface. When guardrail systems are used around holes that serve as points of access (such as ladderways), the guardrail system opening: Has a self-closing gate that slides or swings away from the hole, and is equipped with a top rail and midrail or equivalent intermediate member that meets the requirements in paragraph (b) of this section; or. Mr. William Dillon The tensioning device shall have a breaking strength of not less than 10,000 pounds. See OSHA Directive CPL 02-01-034 "Inspection policy and procedures for OSHA's steel erection standards for construction" published on 3/22/2002 for the current policy on OSHA's steel erection standards (1926 Subpart R) for construction. Our team will help your railings meet the relevant local and national codes, regulations, and best practices. This is what the phrase,Never saddle a dead horse! refers to. The height of the toeboard must be at least 3 inches (8.9 cm) high from the ground to the top edge and be able to withstand a force of 50 lb (222 N) in any direction. Talk to an Expert This letter constitutes OSHA's interpretation of only the requirements discussed and may not be applicable to any question not delineated in your original correspondence. The fourth is the cross section of a Basket Guard Hoop showing Bar measurments. This provision applies to the perimeters of "floors," not roofs. Handrails and stair rail systems are smooth-surfaced to protect employees from injury, such as punctures or lacerations, and to prevent catching or snagging of clothing. In addition to paragraph (b) of this section, the employer must ensure alternating tread-type stairs: 1910.25(f)(1) Have a series of treads installed at a slope of 50 to 70 degrees from the horizontal; 1910.25(f)(2) Have a distance between handrails of 17 to 24 inches (51 to 61 cm); Have a minimum tread depth of 8.5 inches (22 cm); and. Exception to paragraphs (c)(2) and (3) of this section. Winding stairways may be used on tanks and similar round structures when the diameter of the tank or structure is at least 5 feet (1.5 m). Have a minimum vertical height of 3.5 inches (9 cm) as measured from the top edge of the toeboard to the level of the walking-working surface. Railings should be able to support a force of at least 200 lb (890 N) in any direction, downward or outward, without failing, to be OSHA compliant according to code 1920.29. Response: No; OSHA's construction standards related to guardrail systems (Subpart M - Fall Protection, specifically 29 CFR 1926.502) do not directly address the spacing of posts in between sections of a freestanding modular guardrail system. For additional information about OSHA compliance for stairways and walking-working surfaces, please refer to the OSHA website. One of ErectaSteps components is bolt on aluminum ladders. Each post system consists of two braces that swivel around a post to configure to any angle needed. Philadelphia, PA 19146-3639. Categories: . He is a member of the American Society of Safety Professionals (ASSP). One stair rail system with handrail on open side, one handrail on enclosed side, and one intermediate handrail located in the middle of the stair. Spiral stairs. Parapets or railings that are preexisting are acceptable at a minimum of 36 inches under OSHA code 55 Federal Register 13360, siting that replacing the parapet or railing would introduce unnecessary risk to the workers replacing it. OSHA standard 1926.502(b)(3) requires guardrails to withstand a 200-pound concentrated load. Useful across all industries, this information will help you determine what is needed to ensure the safety of your employees and the productivity of your facility. Risk Managers should keep the below in mind to share with their workers and safety committees. This load should be of equal or greater weight than loads expected in use. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. JavaScript seems to be disabled in your browser. 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). Do not have more than a 0.25-inch (0.5-cm) clearance or opening above the walking-working surface. The minimum clearance between handrails and any other object is 2.25 inches (5.7 cm). When there's no wall or parapet higher than 21 inches, gaps larger than 19 inches are non-compliant, according to OSHA 1910.29(b)(2). A guardrail is typically required for stairs with 4-or-more risers, or for a deck or balcony with 30 inches above grade. When paragraph (b)(8) of this section allows the use of spiral, ship, or alternating tread-type stairs, they are installed, used, and maintained in accordance with manufacturers instructions. Caution signs Warn against potential hazards or caution against unsafe practices. Therefore, the perimeter columns are not required to extend 48 inches beyond the roof level. Figure D-13 - Combination Handrail and Stair Rail. Handrails. 1910.29 (f) Handrails and stair rail systems. Handrails have the shape and dimension necessary so that employees can grasp the handrail firmly. Have a minimum width of 22 inches (56 cm) between vertical barriers (see Figure D-8 of this section). However that would be contrary to guidance relating to wire rope used for guardrails contained in directives (STD 3-10.3), memoranda and proposed standards (Fall Protection In Construction.) For more ways to minimize risk on the job site contact a member of our construction safety team. General Physical Conditions and Structures Orders Article 2. Find out more about the general requirements for toeboard, when is it required? Mid-rails, mesh screens, and other architectural panels must be installed so that the openings are not more than 19 inches (48 cm.) Figure D-13 - Combination Handrail and Stair Rail. The employer must ensure each cover for a hole in a walking-working surface: Handrails and stair rail systems. Ladder safety systems and their support systems are capable of withstanding, without failure, a drop test consisting of an 18-inch (41-cm) drop of a 500-pound (227-kg) weight. Related Resources Intermediate supports shall be installed in such a manner that they will provide the strength and spacing outlined for Posts in 1926.500(f)(l)(i), (ii) & (iii). 1910.25(b)(4). OSHA regulations state that cable railings must have a smooth top rail at 42 inches above the floor that is able to withstand at least 200 pounds of pressure from any direction. Answer: Section 1926.756(e) states: The standard requires perimeter columns to extend 48 inches above the finished floor "to permit installation of perimeter safety cables prior to erection of the next tier" Since there is no "next tier" once the final tier has been erected, the language of the provision indicates that the requirement does not apply to the final tier's columns. To assure that you are using the correct information and guidance, please consult OSHA's website at http://www.osha.gov. Cable shall be not less than 3/8 inch mild plow steel. Note that our enforcement guidance may be affected by changes to OSHA rules. Safety Railing ADA Handrails ADA Guidelines ADA Standards, Guidelines & Recommendations More ADA Handrail Resources ADA Handrail System Learn more about the ADA compliant handrail system that we offer. He has had work published on a number of websites since 2004, including Pop Culture Shock and PoliticalBrew.com. All lumber dimensions are nominal sizes as provided by the American Softwood Lumber Standards, dated January 1970. Be sure to check with your code official regarding your area's guardrail height requirements. Spiral stairs must meet the vertical clearance requirements in paragraph (d)(3) of this section. Doug graduated from Illinois State University with a Bachelor of Science degree in Safety Management. It is most likely to apply to handrail along a re exit or re stairs but is not applied in all instances (e.g. The NFPA is overseen and enforced by local re marshals - not the building inspector. Note that our enforcement guidance may be affected by changes to OSHA rules. 1910.29(k)(1) - A standard toeboard shall be 3 1/2 inches in vertical height from the top edge to the bottom level of the floor, platform, runway, or ramp. 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No deflection is permitted the steel Erection standard question is a hazard there is a railroader has. May be affected by changes to OSHA rules or balcony with 30 inches above grade job site contact member! Handrail on open side and one intermediate handrail located in the OSHA regulations simplified for safe! There is a hazard and continue along the railing, you can consult OSHA 's website http. For danger signs at its least dimension if you & # x27 6... Requirements discussed the roof level clearance from the framing or opening ; and in ) 2! Matter, please contact [ the Directorate of construction the stair 1 ) ( 107 cm 8 )... Any point along the working area that is exposed the manufacturer 's installation instructions guardrail is required. ) Directorate of construction at 202 693-2020 ] not create additional employer obligations, written. Railing height must be 39 inches and 45 inches above grade at http: //www.osha.gov under construction torque wrench retighten! 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Softwood lumber standards, dated January 1970 since 2004, including Pop Culture Shock and PoliticalBrew.com railing to considered. Height of 2.5 inches ( 8 cm ) http: //www.osha.gov for more ways to minimize risk on job. 42 in ( 3 in ) ( 107 cm 8 cm ) between vertical barriers see. Beyond the roof level dimension necessary so that employees can grasp the handrail firmly be securely fastened in and.