When using tree anchors, what is a recommended rule of thumb for tree size?

When utilizing tree anchors in rope rescue operations, the recommended guideline for tree size is that the tree should be bigger than the size of your helmet. This guideline ensures that the tree provides sufficient strength and stability to support the load being applied during the rescue operation. A tree with a diameter larger than a helmet typically has a more substantial trunk that can better withstand the forces encountered during rescue activities, minimizing the risk of anchor failure.

In practice, a tree that is too small may not have the integrity needed to support the dynamic loads that can be applied during a rescue scenario. The consideration of size relative to a helmet is practical, as it allows rescuers to quickly assess whether a tree can serve as a reliable anchor without sophisticated measuring tools in the field. This rule of thumb emphasizes safety and proper assessment of anchor points in the context of tree-based rescue operations.