Finding a substitute for the heavy roof slab has been one of the major challenges for structural engineers, mainly because of the difficulty in managing the heavy stress forces. After years of research and development, engineers came up with the filler slab as an alternative. Despite initial hesitation in accepting the new technology, the filler slab has today become popular as a practical low-cost alternative. Filler slabs are one such cost - effective roofing system which is based on the concrete portions and instead placing filler material there. The material used as a replacement includes terracotta bricks, tiles, cellular concrete blocks etc.
