How much strength can be lost when a carabiner is loaded on the short (minor) axis?

When a carabiner is loaded on the short (minor) axis, significant strength loss occurs compared to loading it on the major axis. Typically, a carabiner can lose around 50% of its rated strength when subjected to force along the minor axis because the design and structural integrity of the carabiner are optimized for loading on the major axis, which is the longer span that can effectively distribute the load.

The short axis is not meant to handle the same forces as the major axis due to the geometry of the carabiner, which can create stress concentrations and lead to failure at lower loads. Recognizing this is crucial for safety in rope rescue operations, where understanding the mechanics and limits of equipment is vital to ensure the well-being of those involved in rescues.

The other choices suggest lower percentages of strength loss, which do not take into account the significant engineering principles at play regarding the loading of carabiners on their minor axis. Understanding these figures is essential for safe and effective equipment usage in rescue situations.