How far above the landing must an extension ladder extend for safety?

For safety, an extension ladder must extend at least 3 feet above the landing. This height is critical because it provides a secure handhold for individuals when they are climbing on or off the ladder. This extra extension helps ensure stability and reduces the risk of falls, which can occur if the ladder does not allow for a safe transition to the landing.

The 3-foot extension standard allows a person to maintain three points of contact while climbing and dismounting, which is essential for safety. It also gives adequate clearance, preventing the top of the ladder from slipping off the landing or being unstable. This requirement is part of safe ladder usage practices to help prevent accidents and injuries in various work environments, particularly in scenarios where precision and safety are paramount, such as in substation maintenance or repairs.