Rockfall netting may be installed on cliff faces that are subject to ongoing rock falls as a continuous, passive free-hanging 'curtain'. Passive rock netting is designed to contain rather than prevent rockfall.
As an alternative to passive systems, active restraint systems may be constructed using high tensile mesh in conjunction with an array of rock bolts to prevent further rock fall. These installations are of particular benefit where constraints at the toe of the rock face, such as infrastructure, reduce the acceptability of rock fall accumulation.
All rock netting supplied and installed by KDL is high strength with corrosion protection to suit client needs, ensuring sufficient life span and resistance to damage.
| KDL Gabion Unit Standard Size Custom Jumbo Sizes Available |
|
| Gabion Unit Size | Capacity Cubic Yards | No. Of Internal Cells |
| 6x3x3 | 2 | 2 |
| 9x3x3 | 3 | 3 |
| 12x3x3 | 4 | 4 |
| 6x3x1.5 | 1 | 2 |
| 9x3x1.5 | 1.5 | 3 |
| 12x3x1.5 | 2 | 4 |
| 6x3x1 | 0.666 | 2 |
| 9x3x1 | 1 | 3 |
| 12x3x1 | 1.33 | 4 |
Tolerances: All gabion dimensions shall be within a tolerance limit of plus or minus 5% of the manufacturers stated dimensions.
Material Data:
diameter of mesh wire: 0.120 inches
diameter of selvedge wire: 0.153 inches
diameter of lacing wire: 0.091 inches
coating of wire: finish 5 class 3 zinc coating- ASTM A-641 tested in accordance with ASTM A370-92.
tensile of wire: soft temper in accordance with ASTM A641-92
weight of zinc coating of wire: shall be determined by ASTM A-90
wire diameter of 0.120 inches shall have a weight of zinc coating of: 0.85 oz/sf
wire diameter of 0.153 inches shall have a weight of zinc coating of: 0.90 oz/sf
wire diameter of 0.091 inches shall have a weight of zinc coating of: 0.80 oz/sf
grade of zinc coating of wire: high grade or special high grade in accordance with ASTM B-6, Table 1
uniformity of coating: shall be determined by ASTM A-239
elongation: not less than 12% in accordance with ASTM A370-92.
All of the above wire diameters are subject to a tolerance limit of 0.004 in accordance with ASTM A-641.
All Terra Aqua Gabion material is manufactured according to ASTM A975-97 guidelines for Double Twisted Hexagonal Mesh Gabions.
ASTM A975-97
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