The design of a concrete slab depends on the loads it will be subjected to, the dimensions of the slab, and the strength of the supporting members.
In one-way slab, the load is transferred in one direction only. In two-way slab, the load is distributed in both directions.
Load Distribution
In a one-way slab, the reinforcement bars are placed in only one direction, while in a two-way slab, the bars are placed in both directions.
Reinforcement
One-way slabs are easier to construct as they require less reinforcing steel, Two-way slabs are more complex to construct due to their grid-like reinforcing pattern.
Construction
One-way slabs are suitable for longer spans in the direction of the reinforcing bars, while two-way slabs are suitable for shorter spans in both directions.
Spanning Capability
One-way slabs are suitable for rectangular-shaped rooms with loads in one direction, while two-way slabs are suitable for square or circular-shaped rooms with loads in both directions. The choice of slab type depends on factors such as room shape, load distribution, span, and construction requirements.
Summary