# Standard Interpretations
1 - 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.
2 - 1926.451(b)(3) - Guardrail requirements for two point suspension scaffolds.
3 - 1926.451(b)(3) - Planking, safety line, and personal fall arrest system requirements for tank builder's scaffolding.
4 - 1926.451(b)(3) - Exemptions for installation of guardrails on wall (interior) side.
5 - 1926.451(b)(3) - Requirements of Interim Fall Protection Compliance Guidelines for Residential Construction for guardrails and fall protection during roofing work.