[Mohankar*, 5(3): March, 2016] ISSN: 2277-9655 (I2OR), Publication Impact Factor: 3.785 http: // www.ijesrt.com © International Journal of Engineering Sciences & Research Technology [835] IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY A STUDY OF PORTAL FRAME USING ANALYTICAL METHODS AND ETABS SOFTWARE R. H. Mohankar * , Md. Imran Alam, Gopesh Gaurav, Shubham Choudhary * Assistant Professor, Department of Civil Engineering, Priyadarshini J. L. College of Engineering, Nagpur, India-440009 Student, Department of Civil Engineering, Priyadarshini J.L. College of Engineering, Nagpur, India- 440009 DOI: 10.5281/zenodo.48372 ABSTRACT Analysis of portal frames involves lot of complications and tedious calculations by conventional methods. To carry out such analysis is a time consuming task. The Moment Distribution Method & Slope Deflection Method for analysis of portal frames can be handy in approximate and quick analysis so as to get the detailed estimates ready. In this work, these two methods have been applied only for vertical loading conditions. This paper mainly deals with the comparative analysis of the results obtained from the analysis of single bay portal frame when analyzed manually and using ETABS Software separately. The result obtained from manually is mostly matched with the results obtained from ETABS software. KEYWORDS: Portal Frame, Moment Distribution Method, Slope Deflection Method, ETABS Software. INTRODUCTION Structural analysis deals with study and determination of forces in various components of a structure subjected to loads. As the structural system as a whole and the loads acting on it may be of complex nature certain simplifying assumptions with regard to the quality of material, geometry of the members, nature and distribution of loads and the extent of connectivity at the joints and the supports are always made to make the analysis simpler. For the analysis of portal frames, Moment distribution method and Slope deflection method of analysis are mainly used, which allows the engineer to analyse frames easily and design it economically. The research is concluded by evaluating a selection of portal frame, with practical dimensions in order to substantiate the conclusions as stated below. Comparison of final end moments of a portal frame by the application of rotation contribution method and moment distribution method. The end moments calculated by these two methods are mostly matched. The percentage variation can be reduced with increase in number of iteration in both analysis methods [1]. The existing methods of approximate structural analysis described in various literatures and compare with slope deflection method, conventional approximate method and revised approximate method. [2].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 responses obtained by manual analysis as well as by soft computing are compared. There is slight variation in the values of base shear in manual analysis as well as software analysis [3]. Comparison of end moments of a beam by the application of flexibility method mostly matched with slope deflection method. Slope deflection method is more preferable than flexibility method because in slope deflection method directly know unknown joints, displacement and rotation of the beam and flexibility method quite difficult as it based on matrices [4]. This paper presents the analysis of portal frame, considering mainly the case of single bay, which is the most common in practice. Portal frames are very efficient and economical when used for single-storey buildings, provided that the design details are cost effective and the design parameters and assumptions are well chosen. Portal frames consists of a horizontal beam resting on two columns are single storey with pitched or flat roof (Fig.1). The junction