Anchor wedge configuration for tendon anchors

A post tensioned concrete reinforcement system, comprising:

• an anchor plate having at least one generally tapered bore therein;
• and
• at least two circumferential wedge segments, each segment defining an exterior tapered surface and an interior surface, the exterior surface adapted to cooperatively engage with the at least one tapered bore on the anchor plate, the interior surface having gripping elements thereon, a circumferential dimension of the wedge segments selected so that a total uncompressed gap between circumferential ends of the wedge segments when the segments are applied to an exterior surface of a tendon is at most 2.4 times a height of the gripping elements, wherein an exterior surface of the tendon and an interior surface of the gripping elements define substantially the same radius of curvature, such that when the wedge segments are laterally compressed against the tendon, the circumferential ends of the wedge segments contact each other.

A post tensioned concrete reinforcement system, comprising:

• at least two circumferential wedge segments adapted to be placed on an exterior of a tendon, the wedge segments having an exterior surface adapted to cooperate with a receiving bore in a load transfer device, the wedge segments having an interior surface having gripping elements thereon, a circumferential dimension of the wedge segments selected so that a total uncompressed gap between circumferential ends of the wedge segments when the segments are applied to an exterior surface of the tendon at most 2.4 times a height of the gripping elements wherein an exterior surface of the tendon and an interior surface of the gripping elements define substantially the same radius of curvature, an axial length of the wedge segments equal to at most 2.3 times a nominal diameter of the tendon, such that when the wedge segments are laterally compressed against the tendon, the circumferential ends of the wedge segments contact each other.