Gabions are rectangular cages made of hexagonal double-twist wire
mesh filled with appropriately sized rock or quarry stone. The wire
used is a mild tensile steel wire, class A galvanized to SABS 675
of 1993.
The gabions are sub-divided into cells by inserting diaphragms
which are mesh panels with the same characteristics as the external
sides, spaced 1m from each other to give the structure strength and
facilitate it's speedy construction.
The galvanized wire, before being woven, can be coated with a
special PVC (polyvinyl chloride) coating 0.5mm thick. This
additional coating gives full protection from corrosion in marine
or heavily polluted environments.
Gabions are used in many situations including the stabilization of
earth movement and erosion, river control, reservoirs, canal
refurbishment, landscaping and retaining walls. They can be
manufactured in welded mesh or woven wire.
Gabions are compartmentalized rectangular containers of galvanized
steel hexagonal wire mesh that are filled with stone. While
maintaining sufficient strength to contain the stone used as a
fill, gabions must be able to settle, twist, and conform to channel
and foundation shifts. In order to meet the various needs, gabions
must have the following features:
· Hexagonal mesh pattern critical points
· Double twist to avoid unraveling
· Reinforcing wires woven into corners to reinforce critical points
· A diaphragm securely attached at the base that will prevent the
shifting of some and reinforce the gabio.
THE ADVANTAGES
1. FLEXIBLE
Superior to rigid type structures. The hexagonal mesh construction
permits natural adjustment to varying conditions of earth
settlement without causing fracture or collapse of the structure.
2. DURABLE
Gaps between the stones silt up naturally as time passes. Silting
supports the growth of grass and plants which serve as a bonding
agent for the stone.
3. PERMEABLE
A Gabion structure allows water to pass through, water pressure
cannot build up behind it and the structure is continuously
drained.
4. STRONG
The flexibility of the Gabion structure provides the inherent
strength to withstand and dissipate pressures exerted by water and
earth masses.
5. ECONOMICAL
Filling materials are usually found on or near the site. No
structural maintenance is needed and foundation work is usually
unnecessary.
6. NATURAL APPEARANCE
Natural stone makes the structure aesthetically pleasing especially
when subsequent vegetation growth takes place.
7. SIMPLE
Unskilled labour can be used for quick assembly.
8. MAINTENANCE
Gabion structures are easily maintained using additional mesh or
grouting.
9. FUNCTIONABLE
Once the structure is built there is no waiting period – it
functions immediately.
10. EXTENDABLE
Extensions are simple. Additional units are simply attached to the
existing ones.
| Mesh Type |
| Mesh Type | Nominal Dimension D Values | Tolerances |
| 6 x 8 | 64 mm [2.50 in.] | ±10 %
|
| 8 x 10 | 83 mm [3.25 in.] |
| Typical Gabion Basket Sizes |
Length, m |
Width, m |
Height, m | Number of Cells, each |
Volume, m³ |
| 2.0 | 1.0 | 1.0 | 2.0 | 2.0 |
| 3.0 | 1.0 | 1.0 | 3.0 | 3.0 |
| 4.0 | 1.0 | 1.0 | 4.0 | 4.0 |
| 2.0 | 1.0 | 0.5 | 2.0 | 1.0 |
| 3.0 | 1.0 | 0.5 | 3.0 | 1.5 |
| 4.0 | 1.0 | 0.5 | 4.0 | 2.0 |
| 2.0 | 1.0 | 0.3 | 2.0 | 0.6 |
| 3.0 | 1.0 | 0.3 | 3.0 | 0.9 |
| 4.0 | 1.0 | 0.3 | 4.0 | 1.2 |
/ Gabion Mattress made from a hexagonal double twisted wire mesh
with a mesh type 6x8. The wire mesh diameter is 2.2 mm. The wire
mesh diameter is 2.2 mm.
The possibilities of the mesh coating:
Heavy zinc coating
Galfan coating (Zn-5%Al-MM)
Zinc / Galfan + PVC coating
APPLICATION AREAS:
Erosion control
Riverbank and bed control
Erosion control of riverbank and water reservoirs
Landfill recultivation
STANDARD PARAMETERS OF / GABION MATTRESS:
| Length (m) | Width (m) | Height (m) | Mesh Type |
| 3 | 2 | 0.17 - 0.23 - 0.30 | 6x8 |
| 4 | 2 | 0.17 - 0.23 - 0.30 | 6x8 |
| 5 | 2 | 0.17 - 0.23 - 0.30 | 6x8 |
| 6 | 2 | 0.17 - 0.23 - 0.30 | 6x8 |
Related standards for gabion
- Heavily zinc-coated steel wire conforming to ASTM A 641, Class 3
coating, soft temper;
- Zn-5Al-MM-Coated steel wire conforming to ASTM A 856/856M, Class 3,
soft temper;
- The same type of metallic-coated steel wire as above, but with an
additional PVC coating extruded onto the metallic-coated steel
wire;
- Aluminum-coated steel wire conforming to ASTM A 809, soft temper;
We always supply 3% lacing wire along with the material, which are
used to assemble and interconnect empty units, to close and secure
stone-filled units, and for internal stiffeners. Other options are
available, such as fasteners, stiffeners, hog rings.
Packaging & Shipping
Baskets folded and bundled with steel wires, then with or without
pallets as per customers' requirements.
gabion basket-001
gabion basket-002
gabion basket-003
gabion basket-004
gabion basket-005
