How this node works
Where the column bears on the raft, the pressure concentrates and the punching-shear risk arises: the top reinforcement is densified (or the raft thickened) to stitch the failure cone. The bottom cover is guaranteed by spacers.
Key points
- Column
- Top reinforcement (punching)
- R.C. raft
- Bottom reinforcement
- Cover + spacers
- Blinding
Conceptual, language-neutral drawing for study and orientation — not an execution drawing. Dimensions and verifications belong to the designer.