Standard Interpretations
OSHA requirements are set by statute, standards, and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. Each letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information.
- 1926.452 - Acceptability of climbing over or through guardrails on scaffolds used in construction. - 05/25/2001
- 1926.452 - Applicable standards to lifting personnel on a platform supported by a rough-terrain forklift. - 11/27/2001
- 1926.452 - Exemptions for installation of guardrails on wall (interior) side. - 12/11/2001
- 1926.452 - Longitudinal bracing across the inner and outer rows of posts on tube and coupler scaffolds. - 03/21/1997
- 1926.452 - Re: Subpart L; scaffolds; Companion Rail, rail extensions for mobile scaffolds; 1926.451. - 01/26/2007
- 1926.452 - Requirements applicable to the design, inspection, and testing of imported scaffolding. - 05/10/2001
- 1926.452 - Revised response regarding the storage of materials on a scaffold for more than one shift's work - 10/30/2003
- 1926.452 - Toprail height requirements for pump jack scaffolds. - 05/24/2011
- 1926.452(b)(1) - Fall protection, training, inspection and design requirements of aerial lifts and scissor lifts/scaffolds. - 02/23/2000
- 1926.452(b)(2) - Fall protection, training, inspection and design requirements of aerial lifts and scissor lifts/scaffolds. - 02/23/2000
- 1926.452(b)(3) - Fall protection, training, inspection and design requirements of aerial lifts and scissor lifts/scaffolds. - 02/23/2000
- 1926.452(c)(6) - Regarding scaffolds height measurement. - 10/19/2015
- 1926.452(j) - Fall protection requirements for pump jack scaffold railings. - 03/25/2004
- 1926.452(j) - Toprail height requirements for pump jack scaffolds. - 05/24/2011
- 1926.452(j)(2) - Pump jack scaffolds must be braced at their bottom. - 11/08/2000
- 1926.452(j)(7) - Requirement for pump jack scaffolds. - 12/22/1987
- 1926.452(k)(1) - Requirements for fall protection when ladder jack scaffolds are used for residential and commercial construction - 07/07/2003
- 1926.452(k)(3) - Evaluation of new aluminum ladder jack. - 06/10/1983
- 1926.452(o) - Requirements applicable to the design, inspection, and testing of imported scaffolding. - 05/10/2001
- 1926.452(p) - Requirements applicable to the design, inspection, and testing of imported scaffolding. - 05/10/2001
- 1926.452(p)(4) - Requirements for scaffold grade lumber; qualifications of qualified/competent persons for grading scaffold lumber. - 02/16/2001
- 1926.452(q) - Requirements applicable to the design, inspection, and testing of imported scaffolding. - 05/10/2001
- 1926.452(v)(1) - Scaffolds: lifelines, support lines, and suspension ropes cannot have a common anchor point. - 06/16/1999
- 1926.452(w) - "Rustgo Work Platform". - 11/13/1985
- 1926.452(w) - Aerial lift regulations; fall protection for scissor lifts. - 07/21/1998
- 1926.452(w) - Are podium ladders covered under 29 CFR 1926 Subpart X or Subpart L? - 12/10/2007
- 1926.452(w) - Evaluation of a single-person, manually propelled, mobile work platform. - 05/18/2000
- 1926.452(w) - Fall protection, training, inspection and design requirements of aerial lifts and scissor lifts/scaffolds. - 02/23/2000
- 1926.452(w) - Moving mobile (Baker) scaffolds; locking casters and wheels. - 06/08/1998
- 1926.452(w) - Re: Subpart L; scaffolds; Companion Rail, rail extensions for mobile scaffolds; 1926.451. - 01/26/2007
- 1926.452(w) - Requirements for scaffold toprails and midrails;moving mobile scaffolds; outrigger frames. - 06/09/2000
- 1926.452(w) - Riding manually propelled mobile scaffolds at construction sites. - 05/21/1992
- 1926.452(w) - Safety Standards regulating the stability of mobile scaffolds, scissor lifts, and aerial work platforms. - 06/10/2002
- 1926.452(w) - The use of extension cord while working from scissor lift; requirement to secure or barricade a ladder. - 05/27/2004
- 1926.452(w) - Use of aerial lift or scissor lift guardrails as a work or scaffold platform. - 10/23/2002
- 1926.452(w)(2) - Moving mobile (Baker) scaffolds; locking casters and wheels. - 06/08/1998
- 1926.452(w)(2) - Moving Mobile Scaffolds. - 06/17/2005
- 1926.452(w)(2) - Use of mobile scaffolds with casters in the unlocked position; moving the mobile scaffold without dismounting. - 06/24/2002
- 1926.452(w)(3) - Moving mobile (Baker) scaffolds; locking casters and wheels. - 06/08/1998
- 1926.452(w)(3) - Use of mobile scaffolds with casters in the unlocked position; moving the mobile scaffold without dismounting. - 06/24/2002
- 1926.452(w)(5) - Safety Standards regulating the stability of mobile scaffolds, scissor lifts, and aerial work platforms. - 06/10/2002
- 1926.452(w)(6) - Height to base width ratio for mobile scaffolds with/without outriggers. - 03/10/2004
- 1926.452(w)(6) - Moving Mobile Scaffolds. - 06/17/2005
- 1926.452(w)(6) - Safety Standards regulating the stability of mobile scaffolds, scissor lifts, and aerial work platforms. - 06/10/2002
- 1926.452(w)(6) - Securing of a platform (metal decking) on a manually propelled scaffold. - 06/14/1999
- 1926.452(w)(6) - Use of mobile scaffolds with casters in the unlocked position; moving the mobile scaffold without dismounting. - 06/24/2002
- 1926.452(w)(6)(i) - Use of mobile scaffolds with casters in the unlocked position; moving the mobile scaffold without dismounting. - 06/24/2002
- 1926.452(w)(6)(ii) - Height to base width ratio for mobile scaffolds with/without outriggers. - 03/10/2004
- 1926.452(w)(6)(iii) - Height to base width ratio for mobile scaffolds with/without outriggers. - 03/10/2004
- 1926.452(w)(6)(iv) - Moving mobile (Baker) scaffolds; locking casters and wheels. - 06/08/1998
- 1926.452(w)(6)(iv) - Use of mobile scaffolds with casters in the unlocked position; moving the mobile scaffold without dismounting. - 06/24/2002
- 1926.452(x)(9) - Compliance requirements for the use of U-bolt-type cable clamps in horizontal lifelines. - 10/31/2003