# Standard Interpretations
1 - 1926.451(b)(8) - Whether #9 wire may be used to secure the toprails and midrails on tubular scaffolding; permissible method for setting transitional wood planks.
2 - 1926.451(b)(3) - Whether guardrails are required on a two-point adjustable scaffold while workers who are tied off are painting the undercarriage of a water storage tank.
3 - 1926.451(b)(2)(ii) - Whether guardrails are required on a two-point adjustable scaffold while workers who are tied off are painting the undercarriage of a water storage tank.
4 - 1926.451(b)(1) - Fully Planked and Decked Scaffold
5 - 1926.451(b)(3) - Guardrail requirements for two point suspension scaffolds.
6 - 1926.451(b)(1)(i) - Whether plywood may be used as scaffold decking material over wood scaffold planks; 29 CFR 1926.450 and 1926.451.
7 - 1926.451(b)(1) - Walkways within scaffolds, guardrails, and planking.
8 - 1926.451(b)(5)(ii) - Whether it is permissible to use a concrete block hanging on a coupling pin as a counterweight to prevent a scaffold from tipping.
9 - 1926.451(b)(5)(i) - Whether it is permissible to use a concrete block hanging on a coupling pin as a counterweight to prevent a scaffold from tipping.
10 - 1926.451(b)(5) - Whether it is permissible to use a concrete block hanging on a coupling pin as a counterweight to prevent a scaffold from tipping.
11 - 1926.451(b), 1926.451(b)(5), 1926.451(b)(5)(i), 1926.451(b)(5)(ii) - Whether it is permissible to use a concrete block hanging on a coupling pin as a counterweight to prevent a scaffold from tipping.
12 - 1926.451(b)(2) - Use of 2"x6" No 2 pine boards as a scaffold platform; application of 1926.451(a) and 1926.451(f)(16) when erecting and dismantling scaffolds.
13 - 1926.451(b)(1)(i) - Use of 2"x6" No 2 pine boards as a scaffold platform; application of 1926.451(a) and 1926.451(f)(16) when erecting and dismantling scaffolds.
14 - 1926.451(b)(1) - Use of 2"x6" No 2 pine boards as a scaffold platform; application of 1926.451(a) and 1926.451(f)(16) when erecting and dismantling scaffolds.
15 - 1926.451(b) - Requirements in 1926 Subpart L "Scaffolds" regarding the use of plywood to make platform decking for scaffolds.
16 - 1926.451(b) - Wire rope clips on suspension scaffolds; safety latches on large crane hooks; order of assembly for hanging scaffolds; and horizontal lifeline design.
17 - 1926.451(b)(2)(ii) - Use of aerial lift or scissor lift guardrails as a work or scaffold platform.
18 - 1926.451(b), 1926.451(b)(2)(ii) - Use of aerial lift or scissor lift guardrails as a work or scaffold platform.
19 - 1926.451(b)(3)(ii) - Planking, safety line, and personal fall arrest system requirements for tank builder's scaffolding.
20 - 1926.451(b)(3)(i) - Planking, safety line, and personal fall arrest system requirements for tank builder's scaffolding.
21 - 1926.451(b)(3) - Planking, safety line, and personal fall arrest system requirements for tank builder's scaffolding.
22 - 1926.451(b)(2)(ii) - Planking, safety line, and personal fall arrest system requirements for tank builder's scaffolding.
23 - 1926.451(b)(2)(i) - Planking, safety line, and personal fall arrest system requirements for tank builder's scaffolding.
24 - 1926.451(b)(2) - Planking, safety line, and personal fall arrest system requirements for tank builder's scaffolding.
25 - 1926.451(b)(1)(i) - Planking, safety line, and personal fall arrest system requirements for tank builder's scaffolding.
26 - 1926.451(b)(1) - Planking, safety line, and personal fall arrest system requirements for tank builder's scaffolding.
27 - 1926.451(b), 1926.451(b)(1), 1926.451(b)(1)(i), 1926.451(b)(2), 1926.451(b)(2)(i), 1926.451(b)(2)(ii), 1926.451(b)(3), 1926.451(b)(3)(i), 1926.451(b)(3)(ii) - Planking, safety line, and personal fall arrest system requirements for tank builder's scaffolding.
28 - 1926.451(b) - Request that OSHA adopt a requirement that all scaffold planks meet a "scaffold grade" under recognized grading rules.
29 - 1926.451(b)(1)(i) - Clarification of requirements for construction scaffold erection/dismantling; safe means of access; blocks for two-point suspension scaffolds.
30 - 1926.451(b)(1) - Clarification of requirements for construction scaffold erection/dismantling; safe means of access; blocks for two-point suspension scaffolds.
31 - 1926.451(b)(3) - Exemptions for installation of guardrails on wall (interior) side.
32 - 1926.451(b)(3)(ii) - Requirements of Interim Fall Protection Compliance Guidelines for Residential Construction for guardrails and fall protection during roofing work.
33 - 1926.451(b)(3)(i) - Requirements of Interim Fall Protection Compliance Guidelines for Residential Construction for guardrails and fall protection during roofing work.
34 - 1926.451(b)(3) - Requirements of Interim Fall Protection Compliance Guidelines for Residential Construction for guardrails and fall protection during roofing work.
35 - 1926.451(b) - Requirements for scaffold grade lumber; qualifications of qualified/competent persons for grading scaffold lumber.
36 - 1926.451(b)(3)(ii) - Application of 1926.451(b)(3)(ii) to "Drivit" (synthetic stucco) systems.
37 - 1926.451(b)(7) - Overlapping of scaffold planking.
38 - 1926.451(b)(2) - Waler (platform) covered by Subpart L; minimum scaffold platform width.
39 - 1926.451(b)(2)(i) - Minimum width of roof bracket scaffolds.
40 - 1926.451(b)(4) - Application for permanent variance from 1926.451(a)(4) and 1926.451(b)(11)