What Are Rock Anchors?
A rock anchor is a structural element that transfers tensile, shear, or uplift forces from a structure into competent rock or stable ground. Most systems consist of a high-strength steel tendon installed within a drilled borehole and bonded to the surrounding material using cementitious grout or a mechanical anchoring device.
Once engaged, the bonded zone mobilizes resistance within the rock mass, allowing the anchor to counteract movement, rotation, or instability. Anchors may be installed vertically, horizontally, or at an inclination, depending on structural demands and site geometry.
In Canadian environments, rock anchors are frequently designed to account for freeze–thaw cycling, groundwater variability, corrosion exposure, and fractured bedrock conditions. Proper corrosion protection, bond length design, and load testing are essential to achieving long-term durability and code compliance.