Cable ducts and reinforcement are positioned in the beam mould as shown in picture.
Concrete is cast into the beam mould and allowed to cure to the required initial strength.
Tendons are threaded through the cable ducts and tensioned to about 75% of their ultimate strength.
Wedges are inserted into the end anchorages and the tensioning force on the tendons is released. Grout is then pumped into the ducts to protect the tendons.