OSHA 30 Hour Construction Program Practice Test

Which of the following is NOT a type of ladder found at a worksite?

1. Self supporting portable

2. Non self supporting

3. Cantilever

4. Fixed

The correct answer is: Cantilever

The reason "Cantilever" is not considered a type of ladder found at a worksite is that in the context of ladders, the term typically refers to ladder configurations that are supported from below or on both ends, such as self-supporting or non-self-supporting ladders. Cantilever structures, while used in various construction and engineering applications, specifically refer to beams or structures that are supported only on one end and extend outward with no support on the other end. This design principle does not apply to the conventional ladder types that workers commonly use, such as self-supporting (stepladders), non-self-supporting (extension ladders), or fixed ladders that are mounted to a structure. The other ladder types mentioned are recognized in occupational safety standards and are frequently used on construction sites, each serving a specific purpose and having distinct safety guidelines associated with their use.