• Tambare Aditya Ashruba
• Omkar Taterao Landge
• Pranav Ashok Raskar
• Pradip Somnath Rakhunde
• Manoj U. Deosarkar

In the event of an earthquake or wind load conditions on a building, people can be evacuated safely before the building collapses. Major causalities in the earthquakes around the world are due to the structural collapses. The major structures that collapse are mainly due to their irregularities horizontally and vertically. If we start up with a good configuration and a reasonable framing system, even a poor design cannot harm its ultimate performance too much. In these modern days, most of the structures are involved with architectural importance and is highly impossible to plan with regular shapes. Hence, extensive research is required for achieving ultimate performance even with a poor configuration. In the present work, it is focused to study “Linear Behavior of the Buildings with Plan Irregularities under Earthquake Loads”. Method of analysis adopted in this work is Linear Static Analysis. 10 story and 5 Storied frames are taken into consideration for this study i.e., 6 frames with unsymmetrical plan configuration of L, C and T-shapes. From the studied results of the analysis of 8 frames, it is observed that in the regular frame, there is no torsional effect in the frame because of symmetry i.e., due to the Centre of mass coincides with the Centre of rigidity and also the lateral displacements are same in the direction of earthquake force. The same is observed in the case of wind loads. The responses for an irregular building are different for the columns which are located in the plane perpendicular to the action of force. This is due to the torsional rotation in the structure and additional lateral forces that have been added to the lateral loads due to earthquake loads. In the case of U shaped plan configuration the responses in the corner columns of two limbs are same in the earthquake loads and is not equal in the case of wind loads. Because of these variations in responses, it is healthier to study the response for each and every irregular building instead of taking a broad view.

Unsymmetrical plane configuration, structure collapses, Linear static analysis, lateral displacements, torsional rotation

"Study of seismic analysis of irregular structures by using ETAB Software ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 5, page no.g111-g115, May-2022, Available :http://www.jetir.org/papers/JETIR2205712.pdf

"Study of seismic analysis of irregular structures by using ETAB Software ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 5, page no. ppg111-g115, May-2022, Available at : http://www.jetir.org/papers/JETIR2205712.pdf