Tendon truncation refers to the cutting and sealing of post-tensioning tendons after they have been stressed to the desired tension and anchored in place to allow demolition to take place for change of use purposes in most cases.
Stressing the tendon: Tendons (usually high-strength steel strands or bars) are tensioned using hydraulic jacks.
Anchoring: Once the required force is achieved, tendons are locked off at anchors (end anchorages).
Truncation: The excess tendon protruding from the anchorage is cut off
Capping/Epoxy Grouting: Anchors are capped, and ducts may be grouted to protect from corrosion.
To safely finish the post-tensioning process
To protect tendons from environmental damage
To prepare the structure for its final load-bearing state
Ensure proper protection against corrosion at truncated ends
Labeling and documentation for quality control
Compliance with codes and standards (e.g., ACI, PTI guidelines)
