Abstract: A prestressing anchor is embedded in concrete in part of a concrete structural component, and after setting of the concrete, a prestressing element extending through the prestressing anchor is prestressed and held by clamping wedges disposed in a frustoconical portion of a passage running through the prestressing anchor. Thereafter, a spacer element and an associated or integral further prestressing anchor provided with clamping wedges are pulled onto the prestressing element. With the aid of screws passing through flanges of the prestressing anchors, the further prestressing anchor is held to the first prestressing anchor, the spacer element resting snugly against the end faces of the clamping wedges. The second phase of construction is then carried out, at which time the further prestressing anchor is also embedded in concrete. After setting of the concrete, the following section of the prestressing element is prestressed to about the same value as the preceding section.