What is Differences between One Way Slab and Two Way Slab

Differences between One Way Slab and Two Way Slab

In this Article we will discuss about Differences between One Way Slab and Two Way Slab But Most Civil Engineers students gets confused when asked about the questions related about the differences between one way slab and 2 way slab. If u want to know about their differences, this article we will explains it in detail with definitions & comparison chart.

Slab

Slab is the horizontal member of structure the top & bottom surfaces of  the slab is parallel to each other. The depth of the slab is very small compared to its span. slab is constructed on top of the walls, beam or column of the structure. In multi-story building in the top slab is called roof slab and the lower slab are called floor slab. Slab may be constructed from different material such as steel, concrete, bricks etc. it creates flat horizontal surfaces like floors, roof decks & ceilings. Usually the depth of the slab is slightly thick & supported by beams, columns, walls, or the ground.

Bar Bending Schedule for Reinforced Concrete Beam

One Way Slab

According to the IS 456:2000 the slab in which the ratio between longer span ( L ) & shorter Span (B) is equal or greater than 2 is called  1 way slab. In case of 1 way slab the load is the carried in 1 direction and on that direction main bars are designed and on other direction thin bars are used compered to the main bars which are called distribution bars.

Two Way Slab

The Slab in the ratio between the longer span ( L ) and the shorter span ( B ) is less than two is called 2 way slabs. In case of 2 way slab loads are the distributed in both direction & it is supported from all the sides which is why the load can be distributed on two direction in square shape area the main bars can be used on either side.

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but the main bars will always beneath the distribution bars but if the shape of the area is in rectangular shape then the main bars should be used in shorter direction and distribution bars should be used in the longer direction.

Two way slab = Longer span / shorter span < 2

The difference between One Way Slab And Two Way Slab are shown in the table which is the given below.

Conclusion

The main objective of this article “What is the Differences between 1 Way Slab and 2 Way Slab” is that the ratio between longer span to shorter span will be greater than 2 in 1 way slab & carried the load on only 1 direction while in 2 way slab the ratio between longer span to shorter span will be less than ( 2 ) &  carried the load on both direction.

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