# Variation Between One Way Slab And Two Way Slabs

**ONE WAY SLAB:**In a nutshell, a slab which is supported by beams on the two opposite sides to carry the load along one direction is called one way slab. In one way slab the ratio of longer span (l) to shorter span (b) is equal or greater than 2.

I.e. longer span (l)/Shorter span (b) ≥ 2

**Example of One Way Slab:**As an instance we can take verandah slab which is a type of one way slab. Here the slab is ranging in the shorter direction with main reinforcement and the distribution of reinforcement took place in the crosswise direction.

**TWO WAY SLAB:**A reinforced concrete slab is supported by beams on all the four sides and the loads are brought by the supports along both directions, then it is called two way slabs. In two way slab, the ratio of longer span (l) to shorter span (b) is less than 2.

I.e. longer span (l)/Shorter span (b) < 2

**Example of Two Way Slab:** During the floor construction of multi-storey buildings two way slabs are mostly used.

**DIFFERENCE BETWEEN ONE WAY SLABS AND TWO WAY SLABS:**

In case of one way slab the slabs are generally supported by the beams on the two opposite sides. On the other hand, the slabs are supported on all the four sides in two way slabs.

The loads are brought along one direction in case of one way slab. On the contrary, the loads are carried along both directions in two way slabs.

In one way slab the ratio of longer span to shorter span is equal or greater than 2 and in two way slab the ratio of l/b are less than 2.

Article Source : www.dailycivil.com