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Accidental Torsion in Educational Building due to Random Behavior of Live Load
Abstract
In this paper the shifting of center of mass in an educational building due to random
variation in both intensity and position of live load has been calculated. The educational
building comprises of various areas which are occupied with different magnitude of live load
depending upon their use. These areas are imposed with suitable intensity of imposed load as per IS: 875 and for different positions of these loads the maximum shift of center of mass is evaluated. The shift of center of mass is obtained for different loading cases in educational building. From obtained results it was found that the accidental eccentricity in an educational building due to imposed load uncertainty is much less than code provision. And 5% value of building dimension as per code recommendation is sufficient for consideration of accidental eccentricity.
variation in both intensity and position of live load has been calculated. The educational
building comprises of various areas which are occupied with different magnitude of live load
depending upon their use. These areas are imposed with suitable intensity of imposed load as per IS: 875 and for different positions of these loads the maximum shift of center of mass is evaluated. The shift of center of mass is obtained for different loading cases in educational building. From obtained results it was found that the accidental eccentricity in an educational building due to imposed load uncertainty is much less than code provision. And 5% value of building dimension as per code recommendation is sufficient for consideration of accidental eccentricity.
References
IS 1893 (Part 1). Criteria for Earthquake Resistant Design of Structures, Bureau of Indian Standard, New Delhi; 2002.
Associate Committee on the National Building Code (ACNBC), National Building Code of Canada (NBCC), National Research Council of Canada, Ottawa, 2005.
J.C. De la Llera, A.K. Chopra. Evaluation of code accidental-torsion provisions from building records, J Struct Eng. 1994; 120(2).
J. De-la-Colina, B. Benítez, S. E. Ruiz. Accidental eccentricity of story shear for low-rise office buildings, J Struct Eng. 2011; 137(4).
IS875 (Part 2). Code of Practice for Design Loads (other than Earthquake) for Buildings and Structures. Bureau of Indian Standard, New Delhi; 1987.
DOI: https://doi.org/10.37628/jsea.v3i2.196
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