What is the maximum allowable height of a rolling scaffold?

The maximum allowable height of a rolling scaffold is determined by safety regulations to ensure stability and prevent tipping. Specifically, the guideline states that the height of the rolling scaffold should not exceed three times the narrow end of its base. This requirement is in place because as the height of the scaffold increases, the center of gravity also rises, which can lead to an increased risk of tipping if the base is not wide enough to provide adequate support.

A height ratio of three times the width provides a balance between usability and safety. It ensures that the scaffold remains stable during use, allowing workers to perform tasks at height without undue risk. This ratio is commonly referenced in various safety standards and is derived from best practices in scaffolding design and construction.

Other options, such as having a maximum height of one, two, or four times the narrow end of the base, would either pose significant safety risks or be overly conservative. A narrower base would not provide enough support for greater heights, while an allowance of four times the base width exceeds safety limits and could lead to hazardous conditions. Therefore, adhering to the three-to-one ratio effectively maintains both safety and functionality in working with rolling scaffolds.