What is nailing?

Nailing the soil provides resistance to slope failure. The process of making it is faster than other similar methods. The construction method starts with drilling in the soil using a digger that may be a wagon drill. After completion of the drilling, the exact depth should be provided by the geotechnical engineer, and the nailing rods should be placed in the drilled hole. Then, it should be injected into the soil (grouted). To create a structure similar to a wall, after inserting a nailing, a shading layer is exposed to weathering and integrity to protect the nailing.

Metal tendons are usually comprised of 0.8-2.0 barrels of intrinsic performance in a range of 60-72 KSI. Drainage is one of the important aspects of soil nailing safety. Artificial elements are usually used between the grout shade and the soil or lattice pipes.

The ground nailing injection chuck usually has a minimum diameter of 4 inches. To maintain the uniform thickness of the mortar around the chalk, a centralizer is placed around the soil nailing. For permanent nailing, an epoxy coating with protective coating may be used for corrosion protection.

It is recommended not to use the nailing method in pure clay soils or sandy soils with minimal soil cohesion.

Benefits of Nailing Soil and Limitations:

Regular soil nailing has been used over the past few years from the traditional shear retaining wall for a variety of reasons:

• Ideal for urban spaces.
• In irregular shapes of the bead can be used.
• Fewer noise and less traffic jams.
• It has less impact on the surrounding area.
• It has less load conditions than wall systems.
• Suitable for repairing other good protection systems.
• Soil nailing can be used as temporary structures or in the regeneration process.

Some of the limitations of nailing:

• In some cases, it may be overexposed before nailing.
• Pure sand may not be compatible with nailing.
• Use caution in areas with high water levels.
• In soils with very low shear strength, the density of soil nyling may be very high.
• In sensitive soils and for long-term and permanent use, a lot of care is needed.

(Source: Pouya Fonun Website)