Two Way Slab: Understanding the Basics
What is a two way slab?
A. A slab supported by beams on all four sides
B. A slab supported by beams only on two sides
C. A slab without any beam support
D. A slab with a single span
How is the primary reinforcement offered in two-way slabs?
A. Only in one direction
B. In both directions
C. Alternating directions
D. Diagonal directions
Answer:
1. A. A slab supported by beams on all four sides
2. B. In both directions
Two way slab is a type of concrete slab that is supported by beams on all four sides. This type of slab is capable of carrying loads in both directions. The ratio of the longer span to the shorter span in a two-way slab is less than two.
In two-way slabs, the primary reinforcement is offered in both directions. This means that the reinforcement is present along both the longer and shorter spans of the slab. The beams on all four sides support the slabs, allowing for the load to be transported in multiple directions.
Regardless of the existence of beams that transmit loads to columns, the Building Structural Standard defines a two-way slab system as a concrete slab system in which two rebars are arranged in two directions. This ensures that the slab is reinforced effectively to bear the required loads.