Retaining and erosion control
Double-twisted hexagonal mesh baskets that are laced together on site and filled with graded stone. The finished structure is permeable, flexible enough to settle without cracking, and heavy enough to act as a retaining or erosion-control mass.
Also known as: Gabion box · Gabion basket · Reno mattress · Wire gabion · Gabion wall
Typical range. Final dimensions, coating mass and tolerances are confirmed on the order drawing.
| Mesh type | Double-twisted hexagonal mesh (standard) or welded square mesh |
|---|---|
| Aperture | 60×80 mm, 80×100 mm hexagonal; 50×50 mm, 75×75 mm welded |
| Wire diameter | 2.2–4.0 mm; edge wire one gauge heavier than mesh wire |
| Standard box sizes | 2×1×1 m, 3×1×1 m, 4×1×1 m; other sizes to order |
| Reno mattress | 6×2×0.3 m, 3×2×0.3 m, with internal diaphragms |
| Coating options | Galvanized, Galfan (Zn-5%Al or Zn-10%Al mischmetal), or galvanized plus PVC |
| Selvedge | Reinforced edge wire on all panels of the box |
| Accessories | Lacing wire or spiral binders, internal diaphragms, stone size guidance |
| Packing | Compressed and bundled flat packs for container shipment |
What this detail shows
The basket is woven from double-twisted hexagonal mesh with laced edges; the inset shows the uniform hexagonal opening that holds the stone fill in place.
Related specification
Need this fixing arrangement matched to your layout? Send the drawing and we will confirm the components.
Ask About Fixings| Mesh wire | Galvanized low-carbon steel wire, double twisted |
|---|---|
| Edge wire | Heavier gauge wire forming the reinforced selvedge around each panel |
| Coating | Galvanized, Galfan (Zn-Al mischmetal) or galvanized plus PVC |
| Lacing | Lacing wire or spiral binders supplied with the boxes |
| Stone fill | Graded hard stone, typically 1.5 to 2 times the mesh aperture, from local supply |
Typical configuration
Boxes 2×1×1 m to 4×1×1 m, stacked in stepped courses
Flexible mass that tolerates settlement without visible cracking.
Typical configuration
Reno mattress 6×2×0.3 m laid on prepared slope
Permeable protection that allows vegetation to establish.
Typical configuration
Mattress or box construction by hydraulic study
Used around culverts, bridge abutments and outfalls.
Typical configuration
Boxes with selected stone fill, PVC or Galfan finish
Seating, planting walls and boundary features.
A gabion box is roughly cubic, typically 1 m high, and is used to build walls and mass structures. A Reno mattress is much flatter, usually 0.3 m high, and is laid across a slope for surface protection and erosion control.
If one wire in a double-twisted mesh is cut, the twist holds and the panel does not unravel. Welded mesh is stiffer and holds a flatter face, so it suits architectural walls, but the twisted mesh is more tolerant of movement and damage in hydraulic works.
Galvanized wire is adequate for most inland and intermittently wet situations. Galfan or galvanized-plus-PVC should be considered where the structure is permanently immersed, in brackish or saline water, or where the design life is long and access for maintenance is difficult.
Diamond mesh roll for fencing rather than retaining structures.
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Flexible net systems for rock faces and cuttings.
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General welded mesh rolls and sheets.
View specifications →Send the box or mattress sizes, quantities, mesh type and coating so we can prepare a quotation and loading plan.
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