Table of Contents
Why shorter span is critical in one way slab?
Because due to the huge difference in lengths, load is not transferred to the shorter beams. Main reinforcement is provided in only one direction for one way slabs. One way slab is supported on two opposite side only thus structural action is only at one direction.
Is two way slab better than one way slab?
Whereas the two-way slab is economical for the panel sizes up to 6m × 6m. In one-way slab quantity of steel is less. In a two-way slab quantity of steel is more as compared to the one-way slab. In a one-way slab, bending is only in one direction i.e. in a shorter span.
Why one way slab is used?
The direction (shorter side of slab) in which load is transferred is known as span. A one-way slab is designed for the spanning direction alone as it bends in only one direction. The main tension reinforcing bars therefore run parallel (spaced uniformly) to the shorter span and are usually placed at the bottom of slab.
Which direction is one way slab main reinforcement?
Difference between One Way Slab and Two way slab:
| One Way Slab | Two Way Slab |
|---|---|
| Main Reinforcement is provided in only direction for one way slabs | Main Reinforcement is provided along both the directions in two way slabs. |
What is a 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. The ratio of longer span (l) to shorter span (b) is equal or greater than 2, considered as One way slab because this slab will bend in one direction i.e in the direction along its shorter span.
What is slab span?
A slab or panel is said to be two way slab if the ratio of longer span to the shorter span is not greater than 2 (two). Hence, one way slabs have ratio between longer to shorter span greater than 2. All traditional floor systems were designed as either one way or two way slabs.
What is a one way frame?
A one-way slab is supported on two opposite sides, so structural action is only ever in one direction. Total load is carried in the direction perpendicular to the supporting beam. Main reinforcement is provided in only one direction.
What is the ratio of longer span to shorter span in 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: 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.
What is the ratio of two way slabs?
Rectangular slabs are supported on two adjoining, three, or four sides with the ratio of longer to shorter span lower than 2, which carry the load by flexure in two vertical directions are known as two-way slabs. How to calculate a one way or two way slabs?
Why main reinforcement is provided in both direction for two way slabs?
In two way slab, the ratio of longer span (l) to shorter span (b) is less than 2. In two way slabs, load will be carried in both the directions. So, main reinforcement is provided in both direction for two way slabs.
What do you mean by one way slab?
Usually the depth of slab is slightly thick and supported by beams, columns, walls, or the ground. According to IS 456:2000 the slab in which the ratio between longer span (L) and shorter span (B) is equal or greater than 2 is called one way slab.