# Letters of Interpretation
1 - 1926.451(a)(1) - Weight of the scaffold in determining whether the 4 to 1 factor is satisfied in construction and general industry standards
2 - 1926.451(a)(1) - Whether an employer is permitted to double wrap #9 gage steel wire in order to guy, tie or brace a scaffold.
3 - 1926.451(a)(1) - Whether catch platforms (used to catch an employee in the event of a fall from a working surface above) must comply with OSHA's scaffold standard, Subpart L.
4 - 1926.451(a)(1) - Whether plywood may be used as scaffold decking material over wood scaffold planks; 29 CFR 1926.450 and 1926.451.
5 - 1926.451(a)(1) - Safety factor when "worst-case" force is applied to safety rail support product intended for ladder jack scaffold systems; §1926.451(a)(1)
6 - 1926.451(a)(1) - Whether it is permissible to use a concrete block hanging on a coupling pin as a counterweight to prevent a scaffold from tipping.
7 - 1926.451(a)(1) - Tie-in requirements for supported scaffolds; errors in Non-Mandatory Appendix E.
8 - 1926.451(a)(1) - Whether scaffold components may be loaded in excess of minimum load ratings specified in 29 CFR Part 1926 Subpart L; whether a safety factor must be added to such load ratings; Non-Mandatory Appendix A.
9 - 1926.451(a)(1) - Requirements in 1926 Subpart L "Scaffolds" regarding the use of plywood to make platform decking for scaffolds.
10 - 1926.451(a)(1) - Compliance of Master Plank scaffold planking with OSHA plank strength requirements.
11 - 1926.451(a)(1) - Use of aerial lift or scissor lift guardrails as a work or scaffold platform.
12 - 1926.451(a)(1) - Clarification of 1926.451(a)(6) requirements for scaffolds and bridge-painting projects.
13 - 1926.451(a)(1) - Use of mobile scaffolds with casters in the unlocked position; moving the mobile scaffold without dismounting.
14 - 1926.451(a)(1) - Request that OSHA adopt a requirement that all scaffold planks meet a "scaffold grade" under recognized grading rules.
15 - 1926.451(a)(1) - Applicable standards to lifting personnel on a platform supported by a rough-terrain forklift.
16 - 1926.451(a)(1) - Tie, guy, and bracing requirements for scaffold systems.
17 - 1926.451(a)(1) - Scaffolds: removal of bracing; maximum loads; damaged planking; and foundations.
18 - 1926.451(a)(1) - Two different design requirements for handrail and scaffolding.
# Federal Register
1 - 1926.451(a)(1) - 74:57704-57712 - Avalotis Corp.; Notice of Application for a Permanent Variance and Interim Order, Grant of an Interim Order, and Request for Comments - PDF
2 - 1926.451(a)(1) - 74:4237-4245 - Calaveras Power Partners L.P., Matrix Service Inc., T. E. Ibberson Company, TIC--The Industrial Company, and Zachry Construction Corporation; Notice of Application for a Permanent Variance and Interim Order, Grant of an Interim Order, and Request for Comm - PDF
# Regulations
1 - - General requirements.