ISSN: 2277-3754 ISO 9001:2008 Certified International Journal of Engineering and Innovative Technology (IJEIT) Volume 4, Issue 9, March 2015 123 Abstract— The effective design and the construction of earthquake resistant structures have much greater importance in all over the world. In this paper, the earthquake response of symmetric multistoried building is studied by manual calculation and with the help of ETABS 9.7.1 software. The method includes seismic coefficient method as recommended by IS 1893:2002. The responses obtained by manual analysis as well as by soft computing are compared. This paper provides complete guide line for manual as well s software analysis of seismic coefficient method. Index Terms—earthquake, manual calculation, ETABS 9.7.1, IS 1893:2002 I. INTRODUCTION ETABS is the present day leading design software in the market. Many design company’s use this software for their project design purpose. So, this paper mainly deals with the comparative analysis of the results obtained from the analysis of a multi storey building structure when analyzed manually and using ETABS software separately. In this case, a 22.5m x 22.5m, 8 storey structure is modeled using ETABS software. The height of each storey is taken as 3meter making the total height of the structure 24 meter. Analysis of the structure is done and then the results generated by this software are compared with manual analysis of the structure using IS 1893:2002. II. PROBLEM DEFINATION A. Case A 22.5m x 22.5 m, 8 storey multi storey regular structure is considered for the study. Storey height is 3m. Modeling and analysis of the structure is done on ETABS software. B. Preliminary Data Length x Width 22.5m x 22.5m No. of Storey’s 8 (G+7) Beam 250 mm x 400 mm Columns 400 mm x 500 mm Slab thickness 150 mm Support Condition Fixed Thickness External Wall 120mm Grade of Concrete and steel M20 and Fe415 Length of each bay 7.5m C. Loading Consideration Loads acting on the structure are dead load (DL), Live Load (IL) and Earthquake Load (EL) DL: Self weight of the structure, Floor load and Wall loads  LL: Live load 3KN/m 2 is considered  Seismic: Zone: III  Zone Factor: 0.16  Soil type: II  Response reduction factor: R=3  Importance factor: 1  Damping: 5%  Time period: 0.427 sec (calculated as per IS 1893: 2002) III. ACTUAL ANALYSIS Fig 1: Plan of the structure (ETABS model) (Ref.6) Fig 2: Elevation of structure (ETABS model) Seismic Analysis of Multistoried Building Mahesh N. Patil, Yogesh N. Sonawane W1 W2 W3 W4 W5 W6 W7 W8