Definition of Reinforcement Concrete Slab

  • Ribbed Concrete Slab:

Light or medium is not suitable for live loads like One Way or Two Way Concrete Slab. However, the ribbed slab is not suitable for more than one-way or two-way slab.  In order to design this type of slab, the rhythm of T-beam consistently made. The middle portion of the rib is filled with solids or hollow tiles. If filled with hollow tiles, call it a hollow slab. However, in most cases the solid ribbed slab is made.

Concrete Slab
Fig-1: Ribbed Concrete Slab


  1.  Dead loads are low in the slab, because the weight is light.
  2. Good thermal insulation times are completed.
  3. It is a good sound-insulator.
  4. It is a good fire-insulator.
  5. The construction material takes less than other slabs.
  6. Construction cost is comparatively low.
  7. In this, installation of electrical plumbing and other services is convenient.


  1. In case of too much load, this slab is incompatible.
  2. If the length of the span is big, then the cost of this slab is more then.
  3. Skilled workers are needed.
  • R.B Slab:

These types of slabs are designed in many places for economic savings. Here, 50 percent of the weight of the slab is R.C.C and 50 percent of brick weight. Generally a series of R.C.C. ribs are made and the vacant places are filled with bricks. However, due to the negative motions made in the slab, the required reinforcement must be properly installed.


Concrete Slab
Fig-2: R.B Concrete Slab


  1. Since, about 50% of bricks are used, so concrete takes less.
  2. As the whole brick is used, 30% to 40% of the cement and sand consumption is less.
  3. 25% less cost than the R.C.C. slab.
  4. Labor costs are lower.


  1. In the case of reinforcement designers, the designers have to initially face difficulties.
  2. During casting, the work of concrete is to be done seriously.
  3. The top-bar  of the negative area, must be properly installed.

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