When using an extension ladder to reach a rooftop unit, how far should the ladder extend beyond the support point?

The correct answer indicates that the extension ladder should extend 3 feet beyond the support point when reaching a rooftop unit. This guideline is crucial for ensuring stability and safety when working at height. By extending the ladder sufficiently beyond the support point, it provides a secure handhold for the user as they transition from the ladder to the roof or working area. This added length helps to minimize the risk of losing balance during the climb or descent.

Ensuring that the ladder extends beyond the support point also accounts for potential shifts in weight or movement that may occur while climbing. This is especially important when working on rooftops, where the surface may be uneven or slippery. Maintaining a 3-foot extension helps create a wide margin of safety, preventing the ladder from slipping or tipping over and helping the user to safely mount or dismount.

Moreover, adhering to this guideline is consistent with safety regulations and best practices, reinforcing the importance of using ladders in the safest manner possible. Following this recommendation helps to protect the worker from accidents and injuries related to falls from heights.