Comparative Cost and Design of Solid, Ribbed and Waffle Slab for a Three-storey Shopping Complex Using Prota, Orion and Spreadsheet

Cost is an important factor in choosing the type of floor or slab used any construction. When a large space within building needs to be covered without hindrance and supports, waffle ribbed slabs are used. For all systems, cost constitutes significant portion overall structure. Therefore, this research aims select preferable system with least construction for shopping mall. Computer-aided design software such as Prota 2018 Orion was analysis design, RCC spreadsheets were manually check slabs. The results reveal that Solid has more concrete volume steel than waffle, rib consumes lowest among three systems. most economical systems since it uses reinforcement. ranges from 12 17% structural works, percentages 17.84% solid system, 13.65% 12.48% total It can therefore concluded using saves 17.95% 7.46% sum when compared respectively. In conclusion, recommended should commercial 5KN/m2 live load buildings spans up 15m more.