What is the standard height for guardrails on scaffolds?

The standard height for guardrails on scaffolds is approximately 1 meter (39 inches) because this height is designed to provide effective fall protection for workers at elevated heights. Regulatory guidelines, such as those from Safe Work Australia, specify that guardrails should be constructed to minimize the risk of accidents by providing a secure barrier that can prevent individuals from falling off the scaffold.

Guardrails at this height are high enough to offer protection without obstructing the workers' line of sight or the materials they might be handling. This height also allows for compliance with safety regulations while ensuring that workers can navigate the scaffold safely. The other heights listed do not align with standard safety practices for scaffolding, as they either do not provide adequate protection or may create unnecessary hazards.