what's the minimum height requirement for guardrails?

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## 29 CFR 1926 (OSHA) - (2) Effective September 2, 1997, the employer shall have a competent person determine the feasibility and safety of providing fall protection for employees erecting or dismantling supported scaffolds. Employers are required to provide fall protection for employees erecting or dismantling supported scaffolds where the installation and use of such protection is feasible and does not create a greater hazard. - (3) In addition to meeting the requirements of §1926.502(d), personal fall arrest systems used on scaffolds shall be attached by lanyard to a vertical lifeline, horizontal lifeline, or scaffold structural member. Vertical lifelines shall not be used when overhead components, such as overhead protection or additional platform levels, are part of a single-point or two-point adjustable suspension scaffold. - (i) When vertical lifelines are used, they shall be fastened to a fixed safe point of anchorage, shall be independent of the scaffold, and shall be protected from sharp edges and abrasion. Safe points of anchorage include structural members of buildings, but do not include standpipes, vents, other piping systems, electrical conduit, outrigger beams, or counterweights. - (ii) When horizontal lifelines are used, they shall be secured to two or more structural members of the scaffold, or they may be looped around both suspension and independent suspension lines (on scaffolds so equipped) above the hoist and brake attached to the end of the scaffold. Horizontal lifelines shall not be attached only to the suspension ropes. - (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 susp…

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Oregon Occupational Safety and Health Division Oregon Administrative Rules Division 2 ## 1910.29 Fall protection systems and falling object protection - criteria and practices - (a) General requirements. The employer must: - (1) Ensure each fall protection system and falling object protection, other than personal fall protection systems, that this part requires meets the requirements in this section. The employer must ensure each personal fall protection system meets the requirements in subpart I of this part; and - (2) Provide and install all fall protection systems and falling object protection this subpart requires, and comply with the other requirements in this subpart before any employee begins work that necessitates fall or falling object protection. - (b) Guardrail systems. 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 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). Figure D-11 - Guard Rail Systems <!-- image -->

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## Guardrails - 9-11 (1) Subject to subsections (2) to (4), if the installation of a guardrail is required by these regulations, an employer, contractor or owner shall ensure that the guardrail: - (a) has a horizontal top member that is not less than 920 millimetres and not more than 1070 millimetres above the working surface; - (b) has a horizontal intermediate member that is spaced midway between the horizontal top member and the working surface; - (c) is supported for the entire length of the guardrail by vertical members that are: - (i) not more than 3 metres apart, in the case of a guardrail installed before the coming into force of this section; and - (ii) if reasonably practicable, not more than 2.4 metres apart, in the case of a guardrail installed on or after the coming into force of this section; - (d) is capable of supporting a worker who may fall against the guardrail; and - (e) is constructed of 38 by 89 millimetre construction grade lumber or other materials that are of equal or greater strength. - (2) Clause (1) (a) does not apply to a guardrail that: - (a) was installed on or before October 30, 1988; and - (b) is not less than 900 millimetres nor more than 1 metre above the working surface. - (3) A horizontal intermediate member is not required in the case of a temporary guardrail that is manufactured with a substantial barrier completely filling the area enclosed by the horizontal top member, a horizontal bottom member and the vertical members. - (4) A wire rope guardrail may be used at the external perimeter of a building under construction. - (5) If a wire rope guardrail is used pursuant to subsection (4), an employer, contractor or owner shall ensure that: - (a) the guardrail consists of a horizontal top member and a horizontal intermediate member made of wire rope that is not less than 9.5 millimetres in diameter, with vertical separators not less than 50 millimetres wide that are spaced at intervals not excee…

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- (a) be made of one of the following materials: - (i) if made of wood, - (A) the top rail, vertical supporting posts and intermediate rail shall be constructed of at least 50 mm × 100 mm No. 2 grade or better SPF, these measures being nominal, and - (B) shall not be painted other than by a trans -parent protective coating, - (ii) if made of metal pipe, - (A) the top rail and vertical supporting posts shall be at least 40 mm in diameter, and - (B) the intermediate rail shall be at least 25 mm diameter, - (iii) if made of angle iron, - (A) the top rail and vertical supporting posts shall be at least 40 mm × 40 mm by 5 mm, and - (B) the intermediate rail shall be at least 32 mm × 32 mm × 3 mm, or - (iv) if made of wire rope, - (A) the vertical supporting posts shall be made of steel of at least 40 mm in diameter or of a ma -terial of equivalent strength, and - (B) the top rail and intermediate rail shall be at least 10 mm in diameter, be attached to a welded fastening on the vertical supporting posts with metal clips to prevent unnecessary sagging and be easily distinguishable from the background; or - (b) be pre-engineered. - 97 (2) A guardrail shall - (a) have a height of not less than 900 mm or more than 1.07 m from the floor level, - (b) have a toeboard which - a) soit fait des matériaux suivants : - (i) étant fait en bois : - (A) la lisse supérieure, les poteaux verticaux de soutien et la lisse intermédiaire sont d'au moins 50 mm × 100 mm de qualité n 2 ou o d'EPS de qualité supérieure, ces mesures étant nominales, - (B) n'est pas peint, mais peut être enduit d'un préservateur transparent; - (ii) étant fait en tube métallique : - (A) le diamètre minimal de la lisse supérieure et des poteaux verticaux de soutien est de 40 mm, - (B) le diamètre minimal de la lisse intermé -diaire est de 25 mm; - (iii) étant fait en fer de construction : - (A) la lisse supérieure et les poteaux verticaux …