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Emerging Trends in Civil Engineering pp 355–368Cite as

Empirical Expression for the Fundamental Natural Period of Buildings on Slopes

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Part of the book series: Lecture Notes in Civil Engineering ((LNCE,volume 61))

Abstract

Seismic codes worldwide provide empirical formulas for estimating the fundamental natural period of vibrations (Ta), preferably suitable for regular buildings. As per IS 1893:2016, the fundamental natural period is an inherent building property which is a function of height and base dimensions of the building. However, the formula specified in the existing code is not suitable for a building that is irregular both in plan and elevation. One such case of irregular buildings is building structures on slopes, which are supported on foundations at different horizontal levels leading to non-uniform column heights, where the present period formula is not suitable for estimation of Ta. In the present study, an attempt is made to develop an empirical expression for estimating Ta for buildings on slopes, by performing a regression analysis of numerically obtained natural periods. A total of 180 RC moment-resisting frame structures with varying floor heights and slope angles have been modelled and analyzed using SAP 2000 for the study and an empirical expression has been presented.

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Author information

Authors and Affiliations

  1. Mahindra École Centrale, College of Engineering, Hyderabad, Telangana, India

    Ajay Kumar Sreerama, Sreenath Gundoji, Bharat Prakke & Venkata Dilip Kumar Pasupuleti

Authors
  1. Ajay Kumar Sreerama
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  2. Sreenath Gundoji
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  3. Bharat Prakke
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  4. Venkata Dilip Kumar Pasupuleti
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Corresponding author

Correspondence to Ajay Kumar Sreerama .

Editor information

Editors and Affiliations

  1. Indian Institute of Technology Madras, Chennai, Tamil Nadu, India

    K. Ganesh Babu

  2. JNTUA College of Engineering, Anantapur, Andhra Pradesh, India

    H. Sudarsana Rao

  3. Srinivasa Ramanujan Institute of Technology, Anantapur, Andhra Pradesh, India

    Y. Amarnath

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Sreerama, A., Gundoji, S., Prakke, B., Pasupuleti, V.D.K. (2020). Empirical Expression for the Fundamental Natural Period of Buildings on Slopes. In: Babu, K., Rao, H., Amarnath, Y. (eds) Emerging Trends in Civil Engineering. Lecture Notes in Civil Engineering, vol 61. Springer, Singapore. https://doi.org/10.1007/978-981-15-1404-3_30

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  • DOI: https://doi.org/10.1007/978-981-15-1404-3_30

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-15-1403-6

  • Online ISBN: 978-981-15-1404-3

  • eBook Packages: EngineeringEngineering (R0)

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