Design and Analysis of Multi-Storey Structure

Abstract

The principle objective of this project is to analyze and design a multi-storeyed building (G+9) with Steel Frame using MS excel and Staad Pro. The design involves application of various loads (Dead, Live, Earthquake, Wind etc.) on the structure and analyzing the structure in the Staad Pro. The design of the structure is done using both the manual calculations using MS Excel and Staad Pro. The structure is supposed to be located in Delhi which falls under the Indian seismic zone IV. We considered a 3-D steel frame with dimensions of 90.75ft in X-direction and 68.17ft in Z-direction. The Y-axis consisted of 10 floors of height 10ft each. The plan consisted of 64 beams and 48 columns on each floor level. Modeling in Staad Pro is done by assigning proper material properties and sections. The supports were taken as fixed. The frame was subjected to self-weight, dead loads, live load, seismic load and wind load as per Indian Standard Codes. Steel Design is done with limit state method conforming to IS-800:2007 and design of concrete slabs is according to IS:456-2000. The design results given by Staad Pro are compared with the results obtained manually. Ultimately, the various steel sections for beams and columns are obtained. After designing the building, the post processing mode in Staad Pro can be used to study the bending moment and shear force values with the generated diagrams. We can also check the deflections of the members under the given load. Design and analysis of complicated and high-rise structures need very time taking and cumbersome calculations using conventional manual methods. STAAD.Pro provides us a fast, efficient, easy to use and accurate platform for analyzing and designing structures.