Ground nailing is a technique used to reinforce soil in various settings. Steel bars are inserted and grouted into pre-drilled holes to stabilize the soil. It can be done in confined spaces and navigate tight angles, but requires evaluation by an engineer and should be done by experienced contractors.
Ground nailing is a technique used to reinforce the ground. It can be used in a wide variety of settings for permanent and temporary retaining walls, among other projects. This procedure usually requires a consultation with a soil engineer to confirm that an area is a good candidate for soil nailing and is being done by a contractor that specializes in this type of work. Inexperienced contractors and businesses can make mistakes that can prove costly.
This technique was developed in the 1970s and appears to have originated in France. In ground nailing, the slope or wall to be stabilized is pre-drilled. Then, long steel bars are inserted and grouted and can be coated with anticorrosives if the ground contains corrosive material. The rods stabilize the soil and act to hold it in place. Finally, a top coat is applied to secure the rods in place and add stability.
There are a number of benefits to ground pinning, when it is a technique that can be used safely. It can be done in very confined spaces, which can be useful when space to work on a site is limited or when construction borders another property line. Ground nailing allows for projects where they might otherwise be difficult to execute. In addition, it can navigate unusual and tight curves and angles safely, and can provide stability and shoring from the top of a wall to the bottom, allowing people to protect the ground as they dig.
Once the ground nailing process is complete, one of the most common methods of attaching rebar is to apply shotcrete to the wall. Construction workers can also build a green or living wall and use other wall options as well, depending on the setting. The subsequent retaining wall can be temporary in nature to allow people to work on a site, or it can be a permanent part of a project.
Ground nailing is not necessarily an option for a job and it is important to have the site evaluated by an engineer to confirm it will be appropriate. If an engineer agrees that the technique is suitable and safe, a plan for the process can be developed so that an experienced company can come in and do the job. Specialized equipment is used for nailing the sails, including tractor attachments for drilling and placing steel rods.
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