Describe about the Baur-Leonhardt system

The Baur-Leonhardt system is included in the third type of anchorages which work under the principle of looping tendon wires at the ends of concrete members. In this system, double tendons are wrapped around the end-block (portion of the post-tensioned concrete member near to the ends). This end-block is D-shaped at the end of the member and is detached from the main beams. These end blocks are moved away from the end of the beam, causing tension in the tendons. A gap is created in-between the D-shaped block and the end of the beam. This gap is filled with concrete so that the tendons are left in a stretched form. Another system falling in this category of loop anchorages is the Leoba system. The Baur-Leonhardt system is shown in Figure