The anchors of the platform are also built with reinforced-concrete. Like in the floaters, the mooring cables also cross the anchor using a hole made on it, so that they may connect to the anchors base. This helps to ensure that most of the anchor structure is compressed. These holes are covered by simple PVC covers in order to prevent the deposition of sediments inside the anchors.
The connection between the anchor and the mooring cable is achieved in a similar way to the connection between concrete and pre-stress cables or with the cables of cable-stayed bridges (with the necessary adaptations to the aquatic environmental condition).
The concrete anchors are hollow like the floaters, and therefore they will float while being tugged to their final location. At this location the anchor is sunken by filling this hollow space with ballast weight made of water, sand and stones. With this extra weight it will became a gravity anchor heavy enough to support the high tensile forces on the mooring. Because the water pressure inside and outside of the anchor will be the same, the concrete will be under a tri-axial (3D) state of compression, greatly increasing its resistance and durability.
Project MUPFLOST 