How this node works
In section the load-bearing concrete is wrapped by the reinforcement cage: the longitudinal bars take bending and tension, the spiral confines the core and resists shear, and a generous cover protects the steel from the aggressive ground.
Key points
- Shaft concrete
- Longitudinal bars
- Spiral (hoop)
- Concrete cover
- Soil / support slurry
Conceptual, language-neutral drawing for study and orientation — not an execution drawing. Dimensions and verifications belong to the designer.