The crucial transition zone to the tunnel is formed by the entrance unit together with the adjacent guide wall elements. The entrance is coneshaped to guide the animals into the tunnel. The guide wall system made of polymer concrete consists of five profiles: straight, interior and exterior curves, and rising and falling elements to cope with changes in height. The components are all laid manually. Almost all fence layouts routes can be formed without cutting. The Guide wall LEP 100 has a double guard to prevent animals from climbing up and over it. Narrow vertical slits drain the filled area at the back of the fence. This effectively prevents saturation of the verge and any associated reduction in its load-bearing strength.
The LEP 100 fence system is also suitable for installation in difficult terrain, and in areas affected by heavy loads. The fence is laid on gravel or chippings, with no concrete foundations. This has environmental benefits e.g. close to avenues of trees.
The design of the fence endings varies depending on the project. The polymer concrete ACO Guide wall system can be customised to satisfy a large number of different requirements and therefore ensure effective function and harmonious incorporation in the countryside.
Strength certification confirms that the fence can withstand the weight of a car up to its outermost edge. The weight of the soil up to an incline of 40° can be withstood when it is installed at the foot of an embankment.
Special measures are needed when there is not much space available. When standard components are no longer adequate, systems are needed that enable customised adaptation to the surface of the ground – in other words, modular systems.