A self-supporting portable ladder with flat steps and a hinged back may not exceed ___ feet.

A self-supporting portable ladder with flat steps and a hinged back may not exceed ___ feet.

• A. 20 feet
• B. 25 feet
• C. 15 feet
• D. 10 feet

Answer: (A)

Self-supporting ladders, like step ladders with flat steps and a hinged back, are designed to stand on their own and remain stable. To keep balance and reduce the risk of tipping or slipping, the height is limited to 20 feet. Taller step ladders become harder to set up safely and climb, which increases fall risk. This rule is specific to self-supporting ladders; other types, such as extension ladders, can be longer when used with proper setup, but the 20-foot limit applies to this category.

Self-supporting ladders, like step ladders with flat steps and a hinged back, are designed to stand on their own and remain stable. To keep balance and reduce the risk of tipping or slipping, the height is limited to 20 feet. Taller step ladders become harder to set up safely and climb, which increases fall risk. This rule is specific to self-supporting ladders; other types, such as extension ladders, can be longer when used with proper setup, but the 20-foot limit applies to this category.