scope:

The recommendations pertinent to design with unbonded tendons considered in this report include the design of beams, girders, slabs, continuous members, and details and properties of tendons and anchors and their protection from corrosion during construction and throughout the life of the structure.

The recommendations in this report are not intended for unbonded construction stages of elements using bonded tendons; for multistrand unbonded tendons used as external tendons; members subject to direct tension, such as tiebacks, cable stays, arch ties, or circumferential tendons for containment structures; or ground-supported post-tensioned slabs for light residential construction (PTI 2004).