Gabion Baskets (Boxes) are structures which shall be made of hexagonal Galvanized / PVC / Alu-Zinc coateddouble-twisted mild steel wire mesh. (See Fig.I) Gabion Baskets shall be supplied in various lengths, widths and heights. For sizes & tolerances of dimensions (length x width x height), See Table I. For mesh opening tolerances See Table II . Gabions also meet the requirements of ASTM A975-97. In order to strengthen the baskets, all the edges of structure selvedged with wire of greater diameter. See Table III Usually Gabion Baskets which have bigger length than 2m is divided into cells by panels (called diaphgram) positioned per 1meter. The wire mesh used in Gabion Baskets strictly conforms to EN10223-3 and All wires used in (54,000-70,000psi) acc.to BS1052/80 and ASTM A641-97. (The figures above are of the wire prior to manufacturing mesh). The tolerances on diameter of zinc coated wire in Table IV. The elongation at break is min.12% and test to be carried out on a sample of minimum 30cm (12 in.) long, before manufacturing the mesh. (In acc.with ASTM A370-92) Galvanisation strictly conforms to BS443/82, EN10244-2 and exceed those of ASTM A641-97 ClassIII Soft Temper Coating, DIN1548 and QQ-W-461 H. And Zinc adherence has to be such that when thewire is wrapped around a cylindrical mandrel having 4 times the diameter of the wire, zinc shall not flake or crack to such an extent that any flake or crack can be removed by simply rubbing with bare fingers.
1. Flexible:
Double-twisted hexagonalsteel wire mesh structure toleratesagainst huge forces without breakingor cracking. It adapts itself to somedegree of movement.
2. Durable:
Galvanized wire mesh hasvery long life. If the galvanised wirecoated with PVC, the life of structuregets longer. Better for hydraulic works
3. Permeable:
The hexagonal wiremesh structure filled with stones providean effective permeability throughoutthe structure, they are self-draining.
4. Economy:
Gabion Structures arevery economical compared to theconventional structures especiallywhen the stones to fill the structureare close to the work area. Lowmaintenance is required for theconstruction works (Life Time Economy)
5. Strength:
It can absorb the hugeamount of energy and very strongunder tension generated by the nature.Well-made gabion structures can existin perfect condition for many decades.
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