What are the two types of ladders mentioned?

The correct response identifies the two main classifications of ladders based on their structure and use. Fixed ladders are permanently attached to a structure, providing a consistent means of access to elevated areas such as rooftops or catwalks. They are typically made from sturdy materials to withstand frequent use without the need for relocation. Portable ladders, on the other hand, are designed for mobility, allowing workers to transport them easily between job sites. They can be set up wherever needed to reach work areas at various heights.

Understanding this classification is important for safety reasons, as each type of ladder has specific applications and safety regulations associated with its use. Fixed ladders often come with safety features like cage enclosures or fall protection systems, while portable ladders require careful handling and must be set up according to guidelines to prevent accidents.

The other types listed, while being specific styles or materials, do not represent the fundamental categories associated with ladder classification in the context of safety and structural use.