The following installation instructions are the most common methods of installing rock fall netting. However, the placing of rock fall netting varies depending on the degree of slope, its physical nature, sizes of loose boulders and type of top anchoring. The characteristics of soil and slopes can vary therefore we are presenting the following placing schemes as general information only and not intended to be firm instructions

• At the top of the slope, the netting must be firmly anchored to the soil and seams overlapped approximately 1.5 ft.  
• Cracked hard rock not subject to deterioration: Simple and/or double expansion bolds of 1/2-inch diameter placed on 3 ft to 6 ft centers.
• Compact rocks subject to deterioration: Drill a series of holes at least 1.5 ft deep on 6 ft centers into the rock. Steel reinforcing bars (#4 or #5) will be inserted, hooked and then anchored by filling the holes with grout, mortar or special resins.
• Compact soils: At the same distance, steel reinforcing bars (#6), 2.5 ft long, shall be driven into the soil and fabricated with hooks to which the netting shall be tied.
• Organic and soft soils: Use  anchoring bars (0.5 in to 0.6 in diameter, at 5-6 ft long and 1.5 ft centers buried in concrete. The netting shall be tied to the bars by means of a continuous steel rope.
•  Eye bolts may be substituted for reinforcing steel. Steel cable (3/8 to 1/2 in) is then laid out in a designed grid system and tied to the mesh and the eye bolt is attached to the cable grid with interlocking fasteners.

• If necessary, before laying the netting, the slope must be reclaimed, blasting to remove all loose rocks and boulders. The netting sheets shall be carefully tied together using lacing wire or interlocking fasteners at the sheet overlap.
  Where overlapping occurs, usually at the vertical splice of adjoining sheets, a minimum one-foot overlap is recommended. Horizontal splices may be required as job site conditions dictate.

•  In order to carry out the removal of debris more easily, the netting is simply left loose at its base for approximately 1 ft or to contain the debris rolling down the slope and piling up at the toe of the protection, the netting is anchored at its base. This anchorage, carried out according to the above-mentioned methods, must allow for the removal of accumulated debris from time to time.