Which type of ladder is described as non-self-supporting and adjustable in length with a maximum of 60 feet?

Which type of ladder is described as non-self-supporting and adjustable in length with a maximum of 60 feet?

• A. Fixed industrial ladder
• B. Non-self-supporting portable ladder
• C. Self-supporting ladder
• D. Step ladder

Answer: (B)

Non-self-supporting portable ladders are the ones that lean against a surface and can be extended in length by adding sections, with a maximum length typically limited to about 60 feet. This makes them versatile for reaching higher work areas while still needing a support structure for stability. A fixed industrial ladder stays permanently attached to a structure and isn’t adjustable in length, so it isn’t a candidate here. A self-supporting ladder, like a step ladder, can stand on its own and doesn’t require leaning against a wall, so it isn’t the right fit either. A step ladder is also self-supporting, not the adjustable, leaning type described. Thus, the described ladder best fits the non-self-supporting portable category.

Non-self-supporting portable ladders are the ones that lean against a surface and can be extended in length by adding sections, with a maximum length typically limited to about 60 feet. This makes them versatile for reaching higher work areas while still needing a support structure for stability. A fixed industrial ladder stays permanently attached to a structure and isn’t adjustable in length, so it isn’t a candidate here. A self-supporting ladder, like a step ladder, can stand on its own and doesn’t require leaning against a wall, so it isn’t the right fit either. A step ladder is also self-supporting, not the adjustable, leaning type described. Thus, the described ladder best fits the non-self-supporting portable category.