Tieback (geotechnical)

In geotechnical engineering, a tieback is a structural element installed in soil or rock to transfer applied tensile load into the ground.

The tieback-deadman structure resists forces that would otherwise cause the wall to lean, as for example, when a seawall is pushed seaward by water trapped on the landward side after a heavy rain.

The main purpose of an anchored wall system is to construct an internally stable mass of soil to resist external failure modes, while maintaining an acceptable level of serviceability.

The magnitude of total anchor force required in the tieback can be determined by analyzing the soil and groundwater properties as well as sources of external loads applied to the system.

Performance testing is a more reliable method of predicting the load-elongation behavior, and is conducted on a selected number of tiebacks in a project.