Which test evaluates the structural strength of a ladder?

The test that evaluates the structural strength of a ladder is the Horizontal-bending test. This test is designed to measure how much weight a ladder can bear without experiencing structural failure. In this context, the ladder is subjected to a bending load applied horizontally, which simulates the forces it may encounter during actual use, such as when firefighters climb or maneuver while carrying equipment.

In performing the Horizontal-bending test, the ladder's ability to withstand significant stress and maintain its integrity is critically assessed. The results provide valuable insights into the safety and reliability of the ladder under conditions that it would face in the field. This ensures that firefighters can trust the ladder to perform as needed when they rely on it during emergencies.

Understanding the strength characteristics of a ladder is vital for safety in firefighting operations, as the integrity of the equipment can directly impact the safety of the firefighters using it.