R.C.C. slabs are classified based on shape, support type, support condition, use, sectional configuration, and spanning direction. One-way slabs span in one direction with short spans of 1.80-3.60 m, while two-way slabs span in two directions, suitable for longer spans of 4.5-12 m with heavy loads. Various types of slabs include roof, floor, and water tank slabs, as well as solid, ribbed, and folded plate configurations.

1. R.C.C. SLABS

2. R.C.C. SLABS

4. CLASSIFICATION OF SLABS
Slabs are classified based on many aspects
1. Based on shape: Square, rectangular, circular and polygonal in
shape.
2. Based on type of support: Slab supported on walls, Slab supported
on beams, Slab supported on columns (Flat slabs).
3. Based on support or boundary condition: Simply supported,
Cantilever slab, Overhanging slab, Fixed or Continuous slab.
4. Based on use: Roof slab, Floor slab, Foundation slab, Water tank
slab.
5. Based on cross section or sectional configuration: Ribbed slab
/Grid slab, Solid slab, Filler slab, Folded plate
6. Based on spanning directions :
• One way slab – Spanning in one direction
• Two way slab - Spanning in two direction

5. One- way slab is used with short span range from 1.80-3.60 m.
One way slab bends only in one direction.

11. Two-way slab is used with long span ( 4.5-12 m. ) and heavy
loads or when high lateral force resistance is required