# One Way Slab and Two Way Slab

There are various types of slabs used in the construction of various types of buildings, here we will learn the major difference between one-way slab and two-way slab.

Slabs are constructed to provide flat surfaces, often horizontal in constructing floors, roofs, bridges, and different types of structures.

The slabs could also be supported by walls, reinforced concrete beams normally cast with the slabs, structural steel beams, columns, or floor.

In reinforced concrete construction, the slabs are extensively used structural component that forms the floor and roof.

## Difference between One way Slab and Two way Slab:

#### One Way Slab:

The slabs are supported on two opposite sides by inflexible support, carrying the load by flexing in a direction perpendicular to the support.

The flat surface of predominantly uniformly filled slabs deformations is in a cylindrical surface in which the curvature therefore the bending moment develops in only one direction, such a slabs known as a one-way slabs.

#### Two Way Slab:

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?
• If L/b ratio is larger than or equal 2 or then it is considered a one-way slabs.

(Longer span / Shorter span) L / b ≥ 2

• If L/b ratio is lower than 2 then it is considered a two-way slabs.

(Longer span / Shorter span) L / b < 2

`Also read: Limit State Method and Working Stress Method`

### One way Slab Vs two way slab:

`Also read: Difference between Tie Beam and Plinth Beam`

### Conclusion:

Basically, the difference between these two types of slabs, i.e. one-way and two-way slabs is the ratio of their length and width.

Hello, I'm Rahul Patil founder of Constructionor.com, I had studied B.E. Civil. This blog provides authentic information regarding civil structures, equipment, materials, tests & much more.

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