![RIBBED SLABS to BS 8110:1997 (Analysis & Design) 1 RIBBED SLABS to BS 8110 1997 Analysis Design](https://excel.civilmdc.com/wp-content/uploads/2021/11/RIBBED-SLABS-to-BS-8110-1997-Analysis-Design.png)
A Ribbed Slab gives considerable extra strength in one direction while a waffle slab gives added strength in both directions. And this is possible only in monolithically cast concrete which is the two-way grid of beams. In comparison to the solid slab, the span limits of ribbed slabs are considerably longer.