COMPARISON AND DESIGN ANALYSIS OF FLAT SLAB AND CONVENTIONAL ONE -WAY AND TWO - WAY SLABS

Reinforced concrete slabs are one of the most important structural
elements in multi-storey buildings, as they directly transfer loads to beams
and columns. The selection of an appropriate slab system significantly
influences the structural performance, construction cost, and architectural
flexibility of a building. This study presents a comparative analysis and
design of three commonly used slab systems: flat slab, conventional oneway slab, and conventional two-way slab. A multi-storey reinforced
concrete building model is considered, and three separate structural
models are developed for each slab system. The analysis and design are
carried out using structural analysis software, and the design provisions
are based on IS 456:2000 for reinforced concrete structures along with
loading guidelines from IS 875. Parameters such as bending moment, shear
force, deflection, reinforcement requirement, and overall structural
performance are obtained from the analysis .In the conventional slab
system, beams are provided to support the slabs and transfer loads to the
columns, whereas in the flat slab system the slab is directly supported by
columns without beams, often with drop panels to improve shear capacity.
The results obtained from the analysis are compared to understand the
structural efficiency, economy, and feasibility of each slab type.
Keyboard: flat slab; conventional one-way slab; conventional two-way slab