ONE WAY SLAB

One way is a slab which is supported by beam in two opposite side to carry the load along one direction. 

One-way slab are those slab with an aspect ratio in plan of 2:1 or greater, in which bending is primarily about the long axis.

So the slab is one way where L/B ≥ 2. It may be solid hollow and ripped.

CROSS SECTION

Application of one way slab

• Provides useful flat surface
• One way slab used when there is architectural limitation
• It is simplest design of slab design
• Main reinforcement placing is one way, so there is a little congestion than the two way slab.