STRUCTURAL ANALYSIS OF STEEL STRUCTURE BUILDING USING STAAD-PRO FOR IRREGULARITIES IN PLAN CONFIGURATION

The current analytical study was carried out to comprehend the behaviour of steel framed structure in the presence of mass irregularity and floating column. For this, different steel framed Structures were modelled which entails 3 storey. The plan of the building had 5 bays, 7 bays in both the directions i.e. X and Z direction and each bay had a span of 4m x 4m whereas, the height of each floor was taken as 3.25 m. Steel framed building was considered as commercial building, therefore all the loadings i.e. dead loads (as per IS: 875: Part-1) and live loads (as per IS: 875: Part-2) were considered in the same manner. The dynamic seismic analysis had been performed. Which states that every structure shall be designed with dynamic seismic analysis if the structure falls under seismic zone IV. In the end it can be concluded that the steel framed structure is affected with mass irregularity analysis as the forces and moments have been increased.