what is the difference between One way slab and Two way slab?

One way slab

- supported by beams in only two sides

- the ratio of longer span panel (L) to shorter span panel (B) is equal or greater than 2. Thus, L/B >= 2

- main reinforcement is provided in only one direction for one way slabs

Two way slab

- supported by beams in all four sides

- the ratio of longer span panel (L) to shorter span panel (B) is less than 2. Thus , L/B < 2.

- main reinforcement is provided in both the direction of two way slabs.

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