Over the years, gabions have evolved from simple functional applications such as retaining walls into architecturally interesting feature walls combining rock and other elements. A well constructed gabion wall can provide an intimate and reflective area offering sound proofing, privacy and beauty. There are many design options available to the landscape architect, the type of wall can be low with rock hugging plants trailed over the top of the gabion wall or the wall can be built with curves or sharp angles. The type of rocks used and placement can be artistically arranged for various effects and moods. Some light coloured rock can have an almost desert like appearance and a darker rock such as basalt (bluestone) will have a more moody appearance, especially during wet weather.
The uses for welded mesh gabions are almost endless from artistic and architectural to purely functional. Typical projects include: • House walls • Garden seating • Mail box • Water Feature • Fireplaces • Pizza oven • Planters and etc.
Permathene has a wide range of gabion kit sets, supplied in boxes complete with all the required hardware (panels, spirals, stiffeners, pins). They stock the standard square mesh of 75mm x 75mm openings as well as 100mm x 50mm mesh for customers who want a rectangular look to their gabions.
While the spiral system is a fast and easy way to build gabion cages, some like the look of “C” rings (used every 150mm) as they’re less noticeable than spirals so Permathene offers a choice. A special tool for attaching the “C” rings is available from Permathene for purchase or rental.
When choosing the mesh type, one of the most important decisions relates to the coating system. If deciding to only use a plain galvanised mesh you should insist on a heavy coating of at least 275 gsm. Most fencing-style mesh is a lot less than this, typically around 60 gsm. Coating type and weight is a primary consideration for a permanent gabion structure.
For a small additional cost, Galfan is a far more effective coating. This is a 275 gsm coating of zinc plus aluminium. Generally, a mix of five per cent aluminium and 95 per cent zinc is all that is needed to greatly extend the life of the mesh. Permathene also supplies a special 10 per cent aluminium coating for structures which will be erected in severe environments, such as coastal walkways or close to sea spray.
Stainless steel is another long-life coating. This is available along with PVC-coated Galfan which is typically used for coastal works, shoreline protection and stabilisation. Just remember, the mesh cost is a very small part of the overall project cost so paying a little extra for a superior coating makes good financial sense.
For more information, contact:
Permathene Pty Ltd
Unit 8, 20-28 Ricketty Street, Mascot NSW 2020
Phone: 02 8338 8879