Gabion Box & Basket

Gabion Box & Basket are multiple twisted hexagon-ally woven galvanized or PVC coated steel wire mesh compartmented baskets with a rectangular box shape. The compartments are of equal dimension and are formed by internal diaphragms. The compartment is filled with natural stone and the diaphragms assure minimum stone migration within the basket. Thus providing even distribution of the stone even in abnormal conditions, and adding strength to the container to help retain its rectangular shape during the filling operation.

Specification

Material: galvanized, galfan, PVC coated wire

Mesh size: 6*8cm,8x10cm,10*12cm

Wire diameter: 2.0-4.5mm

Applications

Control and guide of water or flood

Flood bank or guiding bank

Prevention of rock breaking

Water and soil protection

Bridge protection

Strengthening structure of soil

Protection engineering of seaside area

Seaport engineering

Isolation walls

Protection of road

Advantage

Flexibility: Flexibility is an important benefit of any gabion structure. The double-twist hexagonal mesh construction permits it to tolerate differential settlement without fracture. This property is especially important when a structure is on unstable soil conditions or in areas where scour from wave action or currents can undermine the toe of the structure and cause structural settlement.

Durability
Gabions support plant growth which provides a live coating for the wire mesh and stones, adding to their durability. Generally, the wire mesh is needed for the first few years of the structure’s life; later the void between the stones is filled with soil, silt, and plant roots which act as a bonding agent for the stones.

Strength: Steel wire hexagonal mesh has strength and flexibility to withstand forces generated by water and earth masses, and the previous nature of the gabion allows it to absorb and dissipate much of that energy. This is evident on coast protection installations where gabion structures remain effective long after a massive rigid structure fails. Additionally, the double twisted hexagonal mesh won’t unravel if cut.

Permeability
Gabion walls are previous to water and stabilize slopes by the combined action of draining and retaining, precluding the development of hydrostatic pressure behind the gabion wall. Drainage is accomplished by gravity, as well as evaporation as the porous structure permits air circulation through it. As plant growth develops within the structure, the process of transpiration assists in removing moisture from the backfill – a much more efficient system than weep holes in standard masonry walls.

Gabion box is consist of rectangular units, fabricated from a double-twisted hexagonal mesh, filled with stones. In order to reinforce the structure, its edges with a wire having a thicker diameter than the mesh wire. Gabion boxes be divided into cells by diaphragms at every 1 meters.

Gabion box

Gabions are rectangular wire mesh baskets filled with rock at the project site to form flexible, permeable, monolithic structures such as retaining walls for commercial, industrial and road projects. Gabions are used as modular construction blocks to prevent soil erosion. They offer an alternative solution to concrete structures. Gabions, by virtue of their matchless strength, excellent engineering adaptability and proven reliability, have become the chosen building material for the tremendous variety of construction works.

One of the key factors in the long term performance of gabions is the quality of the wire used for the mesh, selvedge wire and lacing wire. Dunes gabions are manufactured from high quality steel wire woven into a double twist hexagonal mesh to give both mechanical strength and prevent unravelling. The quality of the wire is strictly controlled and conforms to BS 1052:1980 for tensile strength.

APPLICATIONS OF GABIONS

Gabions are typically a permanent or semi-permanent slope and/or soil stabilization application.

Typical installations include:

Retaining walls

Bridge abutments and wing walls

Culvert headwalls and outlet aprons

Shore and beach protection

Water recharge dams / Check dams

Rock slide protection works

River training works

ADVANTAGES OF GABIONS

1. Stone filling is characterized by porosity that enables water to flow and doesn’t create hydraulic pressure on the panels of gabion structures, it has drainage function.

2. Gabions are able to deform while still retaining their integrity, they adapt themselves to terrain where the concrete structures may crack and fail, they are suitable for unstable subgrades.

3. The high resistance and durability is secured by outstanding features of steel wire, its surface treatment by heavy galvanization or PVC coating and by the quality of stone filling. During the lifetime the pores are filled up with alluvia and the whole structure is grown through by vegetation what increases its strength and therefore is able to resist against great pressures.

4. Gabion baskets are made from double twisted, hexagonal woven wire mesh. The wire used to manufacture the gabion baskets is fabricated from high quality tensile, heavily galvanized steel, which is also available with an extruded PVC coating for additional corrosion protection, when required by the application. The double twist of the woven wire mesh provides integrity, strength and continuity to the structure by adding a non-raveling effect that prevents any accidental damage from spreading.

TYPES

Zinc Coated Gabion Box

These are manufactured from mechanically woven double twisted hexagonal wire mesh using Heavily Galvanized steel wire. The edges of the mesh are reinforced with a thicker wire called the selvedge wire to strengthen them and to facilitate construction. Gabions can be divided into cells by fitting diaphragms which reinforce the structure and make installation easier.

Zinc + PVC Coated Gabion Box

In case of marine or highly corrosive environment, an additional protection is provided by extruding a 0.5mm to 0.8mm thick PVC coating over the heavily galvanized wire. PVC coating is done on the galvanized wire prior to manufacturing of the gabion mesh.

Install

1. For easy handling and shipping, gabions are supplied folded into a flat position and bundled together.

2. Gabions are readily assembled by unfolding and binding together all vertical edges with lengths of connecting wire stitched around the vertical edges.

3. The empty gabions are placed in position and wired to adjoining gabions. They are then filled with stones to one-third their depth.

4. Connecting wires, placed in each direction, brace opposing gabion walls together. The wires prevent the gabion baskets from “bulging” as they are filled. This operation is repeated until the gabion is filled.

5. After filling, the top is folded shut and wired to the ends, sides, and diaphragms.