How this node works
The slab carries two ways with two mats of bars: the top mat is concentrated over the columns, where the slab hogs and the top fibre is in tension; the bottom mat runs in the spans, where it sags. Spacers hold the cover. Putting the steel where the tension is — top at the supports, bottom at mid-span — is the whole logic of the plate.
Key points
- Slab
- Top mat (over columns)
- Bottom mat (in span)
- Column strip
- Spacers (cover)
- Column
Conceptual, language-neutral drawing for study and orientation — not an execution drawing. Dimensions and verifications belong to the designer.