Post tensioning is a concrete reinforcement technique. Post tensioning tendons which provides pre-tensioning of steel ropes inside the plastic channels or couplers are placed in the forms before placing the concrete. After the concrete is strengthened, the ropes are swiftlypulled or stretched before applying the service loads and leaned against the outer edges of the concrete. The initial pressure simply means that the steel is stretched (pulled or stretched) before the concrete supports the service loads. Prestressed precast is actually pulled before the prestressed steel concrete is casted. Post-stressed concrete means that the concrete is casted and then stressed; however, it is still stretched before the loads are applied and stretching continues. Stretching elements of stretching method consist of rope bundles with high breaking strength. With variations of number of ropes and if needed, variations of rope diameters and quality of the steel, it is possible to obtain a great diversity as rope units with breaking strength between 160 - 16.000 kN in standard units. Larger ropes can be manufactured for special applications. After stretching, the cables are wedged in an anchor which allows the tensile force to be transferred to the structure. The basis of the post tension method is type anchors