Modular Gabions & Mattresses
Modular welded gabions meet NSW RTA QA R55.
Supplied in ready made kits which are easily erected on-site, or in roll form for fabrication by the contractor. In both cases we supply the complete kit, including stiffeners, spirals, etc.
Gabions have the advantage as a hard armour system due to the fact that the rocks within the system dissipate energy of wave action, floods, etc. Silt and vegetation will eventually collect within the gabion wall forming an environmentally friendly and sound structure which is, for the most part, completely maintenance free. Installation is fast and easy and can be done using unskilled labour. Rocks can be found locally.
Modular Gabions can be supplied pre-assembled in our Sydney factory, allowing for faster installation.
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).
Permathene supplies all necessary equipment including guns, rings, wire.
Applications:
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.
Documents:
Technical Pages (pdf): Modular Gabions/ Mattresses
