How this node works
A panel is dug under bentonite slurry that keeps the trench open; the reinforcement cage is then lowered through the slurry. Concrete is poured from the very bottom through a tremie pipe and, being heavier, rises and displaces the slurry, which is pumped off and reused. The pipe is kept buried in the fresh concrete so no slurry is trapped in the pour.
Key points
- Bentonite slurry
- Tremie pipe
- Reinforcement cage
- Concrete (rising)
- Slurry recovered
- Trench / ground
Conceptual, language-neutral drawing for study and orientation — not an execution drawing. Dimensions and verifications belong to the designer.