SPIDER^® spiral rope nets, the economical alternative to wire rope nets in weathered rock slopes with large boulders

SPIDER^®, the novel spiral rope net, stabilizes rock spurs, overhangs or single large, weathered, unstable rock formations. Four elements make up the SPIDER^® rock protection system:

• Spiral rope nets made from high-tensile alloyed Ø 4 mm steel wire
  
  
• Large diamond-shaped mesh
  with 3.4 meshes per running meter permit spanning ridges and rock spurs.   
  
  
• Rolls 
  from 3.5 m wide and 20 m long. Weight per roll 190 kg.
  
  
• SPIDER^® system spike plate
  Type P11 for fixing single meshes to subsoil
  Type P33 large spike plate reinforced with stiffening ribs for active stabilization  
  
  
• Shackles ≥ 3/8"
  For connecting the net panels and for fastening onto the boundary ropes.
  
  
• Soil or rock nails
  All commercially available grouted anchor bar products can be used.