One Way Slab |
Two Way Slab |
| Longer span to shorter span equal to or more than 2. | Longer span to shorter span equal to or less than 2. |
| The bending takes place in one direction only i.e. shorter span. | The bending takes place in both directions. |
| Depth required is more. | Depth required is less. |
| Main steel reinforcement is provided along shorter span. | Main steel reinforcement is provided along both the spans. |
| Less economical as thickness is more and the amount of steel is also more. | More economical as the thickness of slab is less and the amount of steel required is less. |
