Ground plate and post fasteners
Whether in unconsolidated soil, concrete foundation or solid rock: The ground plate is quickly and simply installed with one or at most two anchors. A bollard - rounded, like all elements that are in contact with rope - serves as a rope guide on the foot of the post. The post head
Connecting pins simplify the installation of bearing and running ropes. The bearing elements are shaped to spare the ropes — which pays off, by the way, also in significant events: As a rule, the ropes remain undamaged in a rockfall event and can be reused.
Bearing, anchoring and retaining ropes
Steel wire ropes hold the steel posts and ring nets in the correct position for the existing terrain conditions. Shackles are used to fasten the ring nets to the upper and lower bearing ropes. The steel posts are anchored laterally to the ground with anchor ropes and in back with retaining ropes. Depending on the hazard and energy potential, these ropes may be doubled or quadrupled, using diameters between 12 and 22 mm.
The brake ring
The bearing ropes are guided through pipes bent into loops and held by compression sleeves; these function as brake rings. In larger events the brake rings contract and so dissipate residual energy out of the ring net, without damaging the ropes. The rope's breaking load is not diminished by activation of the brake.
The spiral rope anchor
What can bend does not break; the head of our anchor is flexible and hence not sensitive to impact. The spiral rope is made of steel wires with a tensile strength of 1770 N/mm2. In short: Our spiral rope anchors are a better fit than customary rod anchors — not least because they are also suited for transferring forces, which can deviate by up to 30 degrees from the bore hole axis without loss of load-bearing capacity, in the pulling direction.
The steel posts
The systems utilize HEB profiles in heights of 2 to 7 m, which are fastened to the ground plate with a hinge pin. These hinge pins act as predetermined breaking points and protect the anchorage from destruction in case the posts are directly impacted from falling objects.