How this node works
In section the shaft is the injected grout that fills the hole and keys into the soil, wrapped around the steel tube; inside the tube, more grout. It is the friction on this grout surface, not a base, that carries the pile.
Key points
- Soil
- Injected grout (shaft)
- Steel tube reinforcement
- Grout inside the tube
- Bond with the soil (friction)
Conceptual, language-neutral drawing for study and orientation — not an execution drawing. Dimensions and verifications belong to the designer.