At what height is it generally required to implement additional safety measures for scaffolding?

The requirement for implementing additional safety measures for scaffolding generally starts at heights above 2 meters (6.5 feet). This is primarily due to the increased risk of falls and accidents as the scaffolding height increases. At this height, workers are at a significant risk, which necessitates the use of safety features such as guardrails, toe boards, and personal protective equipment to help mitigate these hazards. Regulatory bodies and safety guidelines recognize this height as a threshold where the potential for serious injury escalates, prompting stricter guidelines for worker safety and scaffold design.

The other height options do not align with the standard practices for scaffolding safety. Above 1 meter (3.3 feet) might be too low to warrant additional measures given that small heights could pose limited risks. While 3 meters (9.8 feet) and 5 meters (16.4 feet) are certainly critical points where safety measures become crucial, they are beyond the general standard established for initial safety interventions, which is duly set at above 2 meters. Thus, the correct height for initiating these important scaffolding safety measures is at 2 meters.