MODULAR WELDED GABIONS & MATTRESSES
- Modular Gabions are either supplied pre-assembled or in roll form.
- Gabion units are supplied in stainless steel, Galfan, or galvanised and coated with durable, fusion bonded PVC (especially for use in coastal works, or where the atmosphere contains corrosive elements, or wherever abrasion may be prevalent).
Technical
Brochures (pdf)
Projects (pdf)
Applications:
- Retaining walls: Gabion walls can be built with speed and economy in all circumstances and are particularly suitable for landslide control in mountainous countries and in areas with persistently bad ground conditions. Where ground is liable to subside, the capacity of gabions to deform makes them preferable to a concrete wall which would crack and collapse.
- Weirs: Gabion weirs, drop structures, and check dams are constructed across water courses as grade control structures, energy dissipaters, sediment collectors, as well as to form reservoirs, for water irrigation, and water supply in general. Gabion weirs are normally provided with a gabion scour protection apron both on their downstream side and at the upstream approach zone. The weir's crest or crown is always protected with a thin layer of concrete for abrasion protection to the steel wire.
- Revetments: As a protective covering to slopes, riverbanks, channels, etc, to prevent erosion by weather or water, gabions will withstand alternative tension and compression without losing structural passage of water throughout the structure.
- Flexible Aprons: Designed to protect superstructures against the undermining action of river or sea water, gabion aprons will closely follow the changing contours of the bed as scouring progresses, until eventually the erosion is completely sealed off. Conventional structures necessitate deep foundations taken down below the maximum scour level, and there is no guarantee that settlement of the river or sea bed will not ultimately lead to their partial or total collapse.
- River Works: Originally introduced for this purpose gabions meet all the requirements for river works structures. These are to prevent erosion, reclaim land already eroded, and to protect land or property. A river wall must withstand alternating pressures from the water in front and the retained earth behind; changes in ground pressure following fluctuations in the moisture content of the soil; changes in the ground beneath it; and any attempt to undermine. In silt carrying rivers, the stonework contained by the gabions gradually becomes matted with soil and plant growth. In time the roots will penetrate through the structure and bind the stones together so effectively that a permanent and solid wall is formed. In a well designed system of gabion groins to redirect river flow, the outer ends of the groins determine the line of the new bank, and the spaces between groins will be gradually filled with deposited material until the gabion works virtually disappear. A gabion dike or wall, across the front of an eroded area will collect silt left behind by flood waters. The silt gradually builds up until the required reclamation is met without any financial outlay. Channel linings built of gabions offer self drainage, the ability to withstand thrust, flexibility, and durability. The same qualities are used to advantage in weir construction.
- Coastal Defences: The pervious structure of gabions gives two advantages over impervious structures. First, when pounded by heavy masses of water, the impact, instead of being taken instantaneously, is gradually absorbed. Again, flexibility offers distinct advantages in coastal defences.
- Soil Conservation: Gabion are applied here as (a) terracing on steep slopes to retain the top soil, (b) linings for the beds and sides of water courses, (c) check dams for grade reducing weirs in steeply sloping gullies or valleys.
- Decorative: Welded Modular Gabions are used extensively for decorative applications. The gabion structure can provide a means for filtering light and wind, or for aesthetics.