PYRAPLEX® is an advanced development of the PLEXUS® box with recesses for high contact forces. With its new and unique special pyramid box design, PYRAPLEX® is the first product to provide biaxial shear force transfer over the entire length of a structural joint. The box surface texture is classified in the “engaged” category in accordance with the technical data sheet of DBV (German Society for Concrete and Building Technology), “Back bending of concrete steel and requirements for protective boxes”.