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Gabion mattress is a galvanized double twisted hexagonal woven mesh compartmented basket with a rectangular mattress shape. The compartments or cells of the mattress are of equal size and dimension and are formed by internal diaphragms. It offer many advantages, such as flexibility, durability, strength, permeability, ecology, reliability, longevity, low cost and an aesthetic appearance. The thickness of gabion mats is usually between 0.15-0.5m. It is similar to gabion box which could be divided by several cells and adopts thicker diameter wires to form mesh edge.
Features
One of the most important advantages of gabion mattresses is their flexibility both for the individual unit and the overall. The construction of the units permits it to tolerate differential settlement without failure. 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.
Gabions mattresses built from high strength double twisted hexagonal mesh filled with natural hard durable stone and connected together to create a monolithic mass structure capable of undergoing structural movement without any loss of structural integrity creating a highly durable structure.
Gabions mattresses create structures that are naturally free draining. Hydrostatic heads do not develop behind gabion and reno mattress structures. Drainage is accomplished by gravity and by evaporation as the porous structure permits an active air circulation through it. Moreover, as soil is deposited and plant growth invades the structure, transpiration further assist in removing moisture from the soil being protected.
The installation of gabions mat is very cost effective. The mattresses are easy to construct requiring limited equipment, unskilled labor, minimal foundation preparation, no drainage provisions, and low cost stone fill generally provided by a local stone or rock supplier. Gabion & Reno mattress structures require very little if any maintenance and if designed and built properly can be a permanent structure.
Specification of reno mattress
| Length(m) |
Width(m) |
Height(m) |
Mesh type(m) |
| 3 |
2 |
0.15-0.20-0.25 |
5x7 |
| 4 |
2 |
0.15-0.20-0.25 |
5x7 |
| 5 |
2 |
0.15-0.20-0.25 |
5x7 |
| 6 |
2 |
0.15-0.20-0.25 |
5x7 |
| 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 |
Application
Reno mattress are used for permanent erosion control in channels, streambanks, spillways and stable slopes from surficial erosion. The stone confinement within the units allows for higher shear stress resistance than the riprap. Soil bioengineering techniques can be used to promote vegetation in the gabion mats to provide enhanced shear resistance. Some other applications include:highway embankments,channel linings,slopes and embankments,railway cuttings
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