How this node works
Everything hinges on this point. Under load the concrete slab on top wants to slide over the timber beam below; if it could, the two would behave as separate, weak members. An inclined screw (or a dowel, or a notched plate) driven across the interface stops that slip and carries the shear between them, so the slab and the beam bend together as one deep composite section. A mesh in the slab controls its shrinkage; the interface is often a separation layer so no damp is trapped against the timber.
Key points
- R.C. slab
- Inclined screw / connector
- Interface: no slip
- Timber beam
- Welded mesh
- Shear at the interface
Conceptual, language-neutral drawing for study and orientation — not an execution drawing. Dimensions and verifications belong to the designer.