| Facing Options |
 |
 |
|
1H:1V or Flatter - Vegetated
1H:1V or Steeper - Vegetated
1H:1V or Steeper - Stone Facing
Temporary Structures
Several key factors that influence face selection are final face/structure batter and capacity to support vegetation. In regions where sufficient rainfall or irrigation is possible, vegetation offers the most economical facing choice. Vegetated slopes have many benefits – provide opportunity to utilize indigenous species or select species more tolerant to variations in weather, provide a green aesthetic that softens hard architectural features, provide visual relief for structures subject to settlement, and minimize requirements for select aggregate. Vegetated structures may be constructed to near vertical geometry; however, the more vertical the structure, the more critical irrigation and plant selection. For conditions where the slope is 1H:1V or flatter, primary and secondary geogrids are combined with traditional erosion protection products and vegetation to provide a sound engineered solution. Temporary forms or welded-wire forms are commonly utilized with Microgrid face wrap and primary geogrid for structures steeper than 1H:1V. In this situation, the welded-wire form functions solely as a construction form, and the Microgrid face wrap combined with permanent vegetative cover provide the long-term facing stability. Primary geogrid addresses the overall structural stability of the slope. In arid regions or situations where structure batter is prohibitive to supporting vegetation, a rock or crushed-stone facing is recommended. Galvanized (often hot-dipped) welded-wire forms are used to provide a long-term facing that also functions as the construction form. Rock selection is based on aesthetics and geometric opening size of the wire form. Strata can provide wire forms modified apertures such as 2” x 12” openings to accomidate the use of smaller aggregate. Stone facing is commonly utilized for permanent structures with near vertical geometry or waterway applications where water elevations prevent the establishment of vegetation. Woven and non-woven geotextiles are often utilized as the face wrap for temporary structures. Conventional black steel, welded-wire forms are utilized simply as construction forms for temporary applications. Temporary applications include roadway re-alignments, surcharge embankments, and staged construction. Advantages
|
Strata Systems
