Requiring anchoring of the foundation posts only, the barrier can be placed excellently on top of wall decks, tunnel portals or retention dams. A rockfall strike will be dissipated by the elongation of the ISOSTOP Flexnet and the calculated plastic deformation of the lateral HEA 140 posts. Due to an inflexible guidance of the lower bearing rope, the barrier shows minimized bottom openings, even if it is placed along construction edges or on slope crests. Long work lines can be realized transition free and without overlapping by using the standard barrier. No additional constructional efforts are required.