What is the maximum potential holding power of properly installed rock anchors?

The maximum potential holding power of properly installed rock anchors is indeed the full strength of the anchor rod. This is based on the principle that, when properly installed, rock anchors can effectively transfer the loads applied to them back into the surrounding rock. The installation must ensure that the rock anchor is seated correctly and that the surrounding material is capable of resisting the forces applied without failure.

When considering the strength of the anchor rod, it's essential to recognize that this strength is determined by material properties and structural design. If the anchor rod is designed to withstand a certain load, with proper installation techniques, the entire load can be applied to it without any degradation of its load-carrying capacity. Thus, the anchoring system can utilize the full strength of the anchor rod, ensuring maximum holding power as long as the surrounding rock can support that force.

This understanding is vital in practical applications, as using a fraction of the anchor rod's strength could lead to inefficiencies, while aiming for twice the strength or any other ratio could surpass the design limits and risk failure or unnecessary material usage.