Which of the following is NOT a requirement for scaffold height to base ratio?

The height to base ratio for scaffolding is crucial for ensuring stability and safety. A scaffold's height to base ratio must be more than 4:1 to maintain its integrity against tipping over due to wind or load. This means that for every four units of height, there should be at least one unit of width at the base to ensure that the scaffold remains stable while in use.

In terms of safety measures, scaffolds must also be designed to prevent tipping, which is reflected in the requirements that ensure braces or stabilizing equipment are used, especially when height exceeds certain thresholds. If the ratios exceed recommended levels, additional restraints or stabilization measures must be put in place to avoid accidents.

The option stating that the ratio must be less than 2:1 represents a misunderstanding of the requirements. Such a low ratio would not support the necessary stability for scaffolding. Thus, this point clarifies that the answer indicating a height to base ratio of less than 2:1 is indeed not a requirement, as it does not align with best practices for scaffold safety.