Question

When using a two-section extension ladder the minimum lap should be ___ for ladders with working length up to 33', and ___ for ladders with working length 33-44'.

A) 2';3'
B) 3';5'
C) 4';4'
D) 3';4'

Answer 1

The correct answer for the minimum overlap of extension ladders is D) 3' for up to 33' working length ladders, and 4' for 33-44' working length ladders to ensure safety.

Step-by-step explanation:

The minimum overlap for extension ladders is a safety regulation designed to ensure the stability and safety of the ladder when it is extended. According to the Occupational Safety and Health Administration (OSHA) and the American National Standards Institute (ANSI), for extension ladders, the minimum overlap required changes based on the length of the ladder.

For extension ladders with a working length of up to 33 feet, the minimum overlap must be 3 feet. When dealing with ladders with a working length between 33 and 44 feet, the required minimum overlap increases to 4 feet. Ensuring this overlap is crucial for maintaining the ladder's integrity and the safety of the user.

Therefore, the correct answer to this question is D) 3'; 4'.