This study deals with finite element analysis anddesign of flat slab systems for high rise buildings. Two types, such as, slabswithout drop panels and slabs with drop panels resting directly on columns areconsidered. Finite element analysis is performed by usingindustry standard software ETABS for gravity and lateral loads.

The results arecompared with the RC frame system. The study is pursued to assess thedifferences in structural behavior of flat slab and frame systems and toautomate the design of flat slabs using semi automation tools available inEXCEL. The work is carried out, first, by designing theflat slab by using direct design method.

The example problem is solved byperforming hand calculations. This activity is pursued to understand the basicconcepts, code procedures for the design of flat slabs. The results obtainedfrom this method are used to validate the FE results obtained by using ETABSand STAAD. This activity is envisaged to familiarize with ETABS beforeembarking on the project problem.

 The project problem consists of Cellar + G + 8floors. Cellar and ground floor are used for vehicle parking. Rest of thefloors are used for residential purposes The FE analysis for flat slabs withoutdrop panel and with drop panels is performed by using ETABS. The results withrespect to parameters such as time period, storey shear, storey drift, storeydisplacement, stress resultant of column, structure deformed shape arecompared. Chapter 1 of this report deals with components andtypes of Flat slab systems generally adopted in high rise buildings. A briefreview of literature is presented in the second chapter.

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Scope, objectives andmethodology are listed in chapter 3. The structural behaviour and design procedures forflat slabs as per codes of practice are traced in chapter 4. Hand calculationspertaining to an example problem are also presented. Chapter 5 deals with software familiarizationstudies performed prior to solving the project problem.