The two-way slab is a slab which is generally supported on all sides of walls or beams, and whose length to breadth ratio is less than two and it twists or bends in both direction while transferring the loads to the walls or beams.


1- Flat ceilings are available in this slab because there is no beam in the middle of the cell.

2- The height of the room is more available.

3- Do not obstruct the reflection of light.

4- The beauty of the room increases.


1- This slab design method is more complex than the one-way slab.

2- Skilled workers are needed.

3- The construction cost is relatively high.

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