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Gabions are baskets made of hexagonal woven wire Mesh Type 80, commonly referred as double twist wire mesh as per SANS 1580:2005. Gabions are filled with rock at the project site to form flexible, permeable, monolithic structures such as retaining walls, channel linings and weirs for erosion control projects. The steel wire used in the manufacture of the gabions is heavily zinc coated. If required, a 0,5 mm nominal thick PVC coating is then extruded over the galvanized wire to provide added protection for use in aggressive environments with acidic soils and water, in salt or fresh water or wherever the risk of corrosion is present. In order to reinforce the structure, all mesh panel edges are selvedged with a wire having a thicker diameter than the mesh wire. The gabions is divided into cells by means of diaphragms positioned at approximately 1m centres.
Finish can be hot-dipped galvanized, galvanized aluminum alloy or PVC coated, etc.