Abstract :

The Analysis And Design Of Buildings For Static Forces Has Become A Routine Task Due To The Widespread Availability Of Affordable Computers And Specialized Software Programs Capable Of Performing Such Analysis Efficiently. In Contrast, Dynamic Analysis Remains A More Complex And Time-consuming Process, Requiring Additional Input Such As The Mass Distribution Of The Structure, Along With A Thorough Understanding Of Structural Dynamics To Accurately Interpret The Analytical Results. Reinforced Concrete (RC) Frame Buildings Are The Most Common Type Of Construction In Urban India, And These Structures Are Subjected To Various Forces During Their Service Life, Including Static Forces From Dead And Live Loads, As Well As Dynamic Forces Caused By Wind And Earthquakes. During Seismic Events, Structural Failure Typically Initiates At Points Of Weakness, Which Often Arise Due To Discontinuities In Mass, Stiffness, Or Geometry. Structures Exhibiting Such Discontinuities Are Classified As Irregular Buildings, And They Represent A Significant Portion Of The Urban Infrastructure. Among Various Types Of Irregularities, Vertical Irregularities Are A Major Cause Of Structural Failures During Earthquakes, As They Significantly Alter The Seismic Performance Of Buildings. Variations In Stiffness And Mass Along The Height Of A Building Change Its Dynamic Characteristics Compared To A Regular Structure, Leading To Amplified Responses Under Earthquake Loading. These Irregularities May Result From Non-uniform Distribution Of Mass, Strength, And Stiffness Throughout The Height Of The Structure. The Analysis Of Such Buildings Can Be Effectively Conducted Using Structural Analysis Software Like STAAD Pro, ETABS, SAP2000, And Tekla, Among Which ETABS Is Particularly Popular Across The Country Due To Its Powerful Capabilities And User-friendly Interface. The Reliability Of ETABS Has Been Validated Through Reference Studies, Where Its Results Were Compared Against Benchmark Data In Terms Of Stor

Published:

25-9-2025

Issue:

Vol. 25 No. 9 (2025)

Page Nos:

541-548

Section:

Articles

License:

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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