COMPARATIVE ANALYSIS AND DESIGN OF FLAT SLAB USING VARIOUS CODES: Review

Abstract

“Flat Slab” is better understood as the slab without beams directly resting the slab on the column and load
from the slab is directly transferred to the columns. Large bending moment &shear forces are developed close to the
column. These stresses brings about the cracks in concrete & may produce the failure of slab, thus there is a need to
provide a larger area at the top of column called as column head/ capital. Absence of beam gives a plain ceiling, thus
giving better architectural appearance. Plain ceiling diffuses light better, easier to construct and requires cheaper
form work. As per local conditions and availability of materials different countries have adopted different methods for
design of flat slabs and given their guidelines in their respective codes. The aim of this paper is to analyse the flat slab
in India followed by a review of design methods for flat slab structure designs based on IS: 456-2000 and ACI-318-
2008 design codes, with ETABS Programming for the easy application for the design of flat slab.Bothcodeshave
specified the fixed coefficients for lateral and transversedistribution of moments as per direct design method
andequivalent frame method. The paper aimed to check whether those moments remain the same when we analyse the
flat slab usingETABS software.