Construction of a wall facing
To create low impact structures that blend into the landscape, there are different types of faces for reinforced steep slopes and walls that can be constructed. For steep reinforced slopes with inclinations up to 45°, Secugrid® can be installed horizontally, without special face elements. For protection against potential wash-out of the fill soil between the reinforcing layers, a filter-stable soil or Secumat® erosion control mat infused with grass seed is especially well suited.
On steeper slopes with inclinations up to 60°, the enveloping method for Secugrid® geogrid installation is necessary. To facilitate this construction technique, temporary or expendable formworks must first be installed. To prevent erosion or soil wash-out, it may be necessary to use a Secutex® nonwoven geotextile on the inner side of the reinforcement. The filter stability calculation of Secutex® is described in the chapter “Filtration with geotextiles”. Using vegetated Secumat® erosion control mats may also prevent soil washout.
The facing of steep walls with inclinations of up to 90° can also be designed to use natural stones, gabions, broken rocks and prefabricated concrete units. If one of these me thods is desired, it should first be determined if these materials can be vegetated. The outer face/geosynthetic connection is made with either factory-made connections or with special clamping or on-site fastening methods.