Twisted gabion products are wire fabric containers, uniformly partitioned, of variable size, interconnected with other similar containers and filled with stone at the site of use, to form flexible, permeable, monolithic structures such as retaining walls, sea walls, channel linings, revetments and weirs for earth retention. Twisted gabion products must be supplied partially assembled. The gabion box or mattress requires stretching to remove creases, kinks and to achieve full dimensional size. Twisted gabions are not self-supporting and are prone to significant slumping during the filling process.
It is important to note that, unlike twisted (woven) mesh, welded gabion product is symmetrical. The values are equal whether load is applied parallel to the line wires or perpendicular to the line wires. By contrast, twisted (woven) gabion offers significantly less tensile strength in the parallel axis when compared to welded gabion and half the strength in the perpendicular axis. Welded gabion products should be supplied in roll stock form, assembled or partially assembled. Gabion boxes and mattresses meet dimensional specifications and proper shape without stretching or straightening. They are self supporting for easy assembly, placement and filling. Welded gabion box is assembled and joined with quick-connecting and pre-formed spiral binders.