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Giuardrail heights NYC dob code

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I am sorry, but I don't have enough information to answer your question about guardrail heights in the NYC DOB code. The documents provided do not contain specific regulations or codes related to New York City's Department of Buildings (DOB). However, I can provide general information on guardrail requirements from other jurisdictions.

Generally, guardrails are required to prevent falls from elevated surfaces. Here are some common requirements for guardrail systems:

  • Height: Guardrails typically need to be between 36 inches (0.9 m) and 45 inches (1.2 m) above the working surface 4, 8. Some regulations specify a height of not less than 900 mm or more than 1.07 m from the floor level [1].
  • Midrails: Intermediate members, such as midrails, screens, or mesh, should be installed between the top edge of the guardrail and the working surface 4, 8. When midrails are used, they should be placed approximately midway between the top edge of the guardrail and the platform surface 4, 11.
  • Strength: Guardrail systems must be capable of withstanding a certain amount of force. For example, a toprail should be able to withstand a force of at least 200 pounds (890 N) applied in any direction [2].
  • Materials: Guardrails can be made of various materials, such as wood, metal pipe, angle iron, or wire rope [1]. Wood components should be construction grade lumber or other materials of equal or greater strength [3].

To find the specific guardrail requirements for NYC, you should consult the official NYC DOB codes and regulations or contact the DOB directly.

3 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 841

Open source document

Source excerpt

Oregon Occupational Safety and Health Division Division 3 ## Appendix G to Subpart R - 1926.502(b)-(e) Fall Protection Systems Criteria and Practices - (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 (1926.502(b)). 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 (.5 m) wide. - (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 (1926.502) is applied i…

[2] Occupational Health and Safety Regulations, 2020 (Sask. Reg. 10/2020)

Page 73

Open source document

Source excerpt

## 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…

[3] General Regulation (N.B. Reg. 91-191)

Page 110

Open source document

Source excerpt

- (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 …

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