What is the only type of ladder permitted for accessing scaffolds?

The appropriate type of ladder for accessing scaffolds is an industrial grade single length ladder. This type of ladder is designed to meet specific safety standards and provide a stable and secure means of access to scaffolding. Industrial grade ladders are built to handle the demands of construction environments, ensuring they can support the weight of a person and any tools or materials carried.

Other types of ladders, such as extension ladders, step ladders, and telescopic ladders, may not provide the same level of stability or may not be approved for this specific use case. Extension ladders can be more prone to instability if not set up correctly, while step ladders and telescopic ladders may not provide the required height or safety features necessary for proper access to scaffolds. Thus, the industrial grade single length ladder is the only type specifically permitted for this purpose, ensuring safety and compliance on construction sites.