A tieback is a horizontal rod used to reinforce retaining walls for stability. With one end of the tieback secured to the wall, the other end is anchored into the earth with sufficient resistance.
Helical Tiebacks or Soil Screws
A Helical Tieback or Soil Screw is a segmented deep foundation system with helical bearing plates welded to a central steel shaft. Load is transferred from the shaft to the soil through these bearing plates.
Tieback anchors are installed by rotating the anchors into the ground with rotary drilling equipment. Once the minimum depth is obtained, the capacity can be determined by reading the installation torque and correlating it to the holding capacity ratio.