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Consolidation with nailing
This technology is mostly used to stabilize and consolidate embankments, usually associated with shotcreting, in both temporary construction work (excavations for putting in foundations) and definitive structures.
- The two main types of nailing work done by Stap are:
- Drilled nailing sealed with a cement grout;
- Vibration-riveted nailing.
In the first case, a preliminary hole is drilled, usually with around 100 mm diameter in which a steel rod is sealed (typical diameter=20 mm).
In the case of vibration-riveted nailing, the rod is inserted into the ground using a percussion hammer. The operation finishes when the insertion length specified in the project is reached. Drilled nailing has two main advantages over vibration-riveted nailing:
- There is no theoretical limit on its length;
- It can be implemented on any type of terrain;
- It allows higher tensile stresses to be absorbed for better connection to the ground.
On the other hand, vibration riveting has obvious advantages in terms of cost and speed.
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Drilling holes for nailing with light rotary equipment.
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Drilling for nailing.
