Rockfall Netting for Controlling Rocks Fall
Rockfall netting is hexagonal wire mesh supplied in the form of roll installed on cliff, slope or mountain. It is woven by low carbon steel wire, stainless steel wire or galfan wire with the surface of galvanized, PVC coated or galvanized plus PVC coated. Its mainly application is prevent rocks and debris from falling onto roads, railways or other buildings. On the top of the cliff, there must be a row of rock bolt to fix the mesh. Hexagonal wire mesh could be one layer or two layers, usually has steel wire rope ring or steel wire rope and rivet to fix. Galvanized or galfan rockfall netting is the most popular.

Rockfall netting can be divided into proactive rockfall netting and passive rockfall netting. Above mentioned that anchor hexagonal wire mesh and steel wire rope mesh on mountain is proactive rockfall netting. Its purpose is to prevent rocks of mountain falling. In addition, rockfall netting installed on half of mountain or mountain foot to prevent rocks falling on road or hurting people is called passive rockfall netting. As shown below:

Specifications

Material: low carbon steel wire, stainless steel wire. 
Surface treatment: galfan, galvanized, PVC coated or galvanized plus PVC coated. 
Mesh opening shape: hexagon. 
Weaving method: normal twist (double twisted or triple twisted), reverse twist (double twisted). 
PVC coating color: green, black, gray, orange, yellow, red, white, blue. 
Nominal thickness of PVC coating layer is 0.50 mm to 1.00 mm. 
Height: 0.3 m - 2 m. 
Length: 5 m, 10 m, 20 m, 25 m, 30 m, 35 m, 50 m. 
Height and length can be manufactured according to your custom. 
Galvanized rockfall netting in normal twist Mesh size Wire gauge (BWG) 
inch mm 
3/8" 10 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21 
1/2" 13 27, 26, 25, 24, 23, 22, 21, 20 
5/8" 16 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21 
3/4" 20 25, 24, 23, 22, 21, 20, 19 
1" 25 27, 26, 25, 24, 23, 22, 21, 20, 19, 18 
1-1/4" 32 23, 22, 21, 20, 19, 18 
1-1/2" 40 23, 22, 21, 20, 19, 18, 17 
2" 50 23, 22, 21, 20, 19, 18, 17, 16, 15, 14 
2-1/2" 65 21, 20, 19, 18 
3" 75 21, 20, 19, 18, 17, 16, 15, 14 
4" 100 19, 18, 17, 16, 15, 14 
Galvanized rockfall netting in reverse twist Mesh size Wire gauge (BWG) 
inch mm 
1" 25 25, 24, 23, 22, 21, 20, 19, 18 
1-1/4" 32 23, 22, 21, 20, 19, 18 
1-1/2" 40 23, 22, 21, 20, 19, 18, 17 
2" 50 23, 22, 21, 20, 19, 18, 17, 16 
3" 75 20, 19, 18, 17, 16 
PVC coated rockfall netting Mesh size Wire diameter (mm) 
inch mm 
3/8" 10 0.4 mm, 0.5 mm, 0.6 mm, 0.8 mm 
1/2" 13 0.6 mm, 0.8 mm, 0.9 mm, 1.0 mm 
5/8" 16 0.4 mm, 0.5 mm, 0.6 mm, 0.8 mm, 0.9 mm, 1.0 mm 
3/4" 19 0.6 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.2 mm 
1" 25 0.7 mm, 0.9 mm, 1.0 mm, 1.2 mm, 1.4 mm 
1-1/4" 30 0.85 mm, 1.0 mm, 1.10 mm, 1.30 mm, 1.4 mm 
1-1/2" 40 0.8 mm, 1.0 mm, 1.2 mm, 1.4 mm, 1.6 mm 
2" 50 1.0 mm, 1.2 mm, 1.4 mm, 1.6 mm, 2.0 mm 

Features of rockfall netting

Resistant to corrosion, rust, oxidation and damage. 
Stable structure, smooth surface, uniform mesh size, high tensile strength. 
Allow vegetation regrowth. 
Flexible in all direction and would not spread when it is broke. 
Easy to transport and install. 
Galvanized mesh and PVC coated mesh have longer life, low cost. 
Applications of rockfall netting

Prevent rocks and debris from falling onto roads and railways. 
Hold plaster, cement on roof, wall, ceiling, floor or tile to reinforce them. 
Feeding chicken, rabbit, duck, geese, fish and other poultry or small animals. Style can be fence and cage. 
Protect vegetable, flower or small plant from poultry and small animals. 
Equipment and machines protection, highway fence, tennis court fence, protection fence for road greenbelt. 
Control and guide water or flood. 
Retaining walls. 
Channel lining.