Ground anchors transfer tensile loads and consist of an anchor head, a free length and a bond length. Anchors can offer an advantage for basements and large excavations by minimising horizontal deflections.
A stable borehole is executed to the right diameter and designed length, filled with cement grout and then the anchor (strand or bar with free and bond length) installed. Post grouting can be done after a few hours if necessary. The anchor head is then installed and stressing completed.
Keller has been installing anchors for many years, continually evolving the technique to achieve better performance. Testing and monitoring ensures high quality execution.