ONE WAY SLAB VS TWO WAY SLAB
By Omkar Kumar
ONE WAY SLAB:
One way slab is a slab which is
supported by beams on the two opposite sides to carry the load along one
direction. 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
Verandah slab is a type of one way
slab, where the slab is spanning in the shorter direction with main
reinforcement and the distribution of reinforcement in the transverse
direction.
TWO WAY SLAB:
When a reinforced concrete slab is
supported by beams on all the four sides and the loads are carried by the
supports along both directions, it is known as two way slab. 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
This types of slabs are mostly used
in the floor of multi-storey buildings.
DIFFERENCE BETWEEN ONE WAY SLABS AND TWO WAY SLABS:
1. In one way slab, the slabs are
supported by the beams on the two opposite sides.
In two way slab, the slabs are
supported on all the four sides.
2. In one way slab, the loads are
carried along one direction.
In two way slab, the loads are
carried along both directions.
3. In one way slab, the ratio of
Longer span to shorter span is equal or greater than 2. (i.e l/b ≥ 2).
In two way slab, the ratio of l/b is
less than 2 (i.e l/b < 2).