The piles created with pneumodrifts are recommended to be used:
- When making piled foundations in reconstructed buildings and structures;
- In restricted conditions, where use of driven piles is not applicable;
- Reinforcing slopes;
- Creating retainer walls; and
- During in-depth compacting collapsing and man-made grounds
The piles moulded in the soil with pnemodrifts have the highest specific bearing capacity, which 2 to 2.5 times exceeds that of driven piles.
Set: Reversible pneumodrift; Sulky derrick.
Operational principle: Piles a moulded in the ground by pneumodrift workovers along the well filled with a semi-dry concrete mixture. Along that, the mixture is compacted and rammed into the well walls forming the well body. For reinforcing the existing foundations, both vertical and slanting piles can be used. Depending on the load type, piles can be either reinforced or non-reinforced. The pile diameter is up to 300 mm, its maximum length depends on the soil conditions and can be up to 10 m.
Piles: Cylindrical; With enlarged base; With enlargement in the upper trunk part; With variable outer diameter; Pyramid-shaped; Reinforcement.