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Computations of Characteristic Compressive Strength and Design Vertical Load Resistance of Brick Masonry

Computations of Characteristic Compressive Strength and Design Vertical Load Resistance of Brick... The latest version of NBC-2016 [National Building Code of India 2016, Volume 1, Part 6: Section 4: Masonry, Bureau of Indian Standards, SP 7:2016, New Delhi] includes provisions and recommendations for design of unreinforced and reinforced brick masonry and other masonry units. While the design philosophy of unreinforced and reinforced brick masonry continues to be based on permissible stresses, assimilation of statistical significance in latter is quintessential and needs more attention. In design of reinforced concrete elements led by limit state principles, the ultimate stress in concrete is computed as a function of characteristic compressive strength of concrete which is an important stress block parameter. The application of a similar design philosophy to structural masonry requires more probabilistic perspective and arriving at the characteristic compressive strength for masonry would serve as a predominant factor. Also, some of the leading international masonry codes of practice such as British Standards, European Standards and Australian Standards have adopted the practice of limit state designs for unreinforced and reinforced masonry encompassing several masonry units. The design of masonry structures in compression based on limit states as practiced by western codes involves three main components—the characteristic compressive strength of masonry, stress (or capacity) reduction factors and the design vertical load resistance of masonry. This research article primarily focuses on unreinforced brick masonry by determining these three key factors with a backdrop of limit state methods and evaluates its influence in the design. Thus, the computed design vertical load resistance of brick masonry is compared with results obtained by some of the mentioned international masonry codes. Further, design charts have been developed to determine the design vertical load resistance of brick masonry which serves as a ready-reckoner for computations. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of The Institution of Engineers (India) Series A Springer Journals

Computations of Characteristic Compressive Strength and Design Vertical Load Resistance of Brick Masonry

Journal of The Institution of Engineers (India) Series A , Volume 104 (1) – Mar 1, 2023

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References (18)

Publisher
Springer Journals
Copyright
Copyright © The Institution of Engineers (India) 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
2250-2149
eISSN
2250-2157
DOI
10.1007/s40030-022-00691-9
Publisher site
See Article on Publisher Site

Abstract

The latest version of NBC-2016 [National Building Code of India 2016, Volume 1, Part 6: Section 4: Masonry, Bureau of Indian Standards, SP 7:2016, New Delhi] includes provisions and recommendations for design of unreinforced and reinforced brick masonry and other masonry units. While the design philosophy of unreinforced and reinforced brick masonry continues to be based on permissible stresses, assimilation of statistical significance in latter is quintessential and needs more attention. In design of reinforced concrete elements led by limit state principles, the ultimate stress in concrete is computed as a function of characteristic compressive strength of concrete which is an important stress block parameter. The application of a similar design philosophy to structural masonry requires more probabilistic perspective and arriving at the characteristic compressive strength for masonry would serve as a predominant factor. Also, some of the leading international masonry codes of practice such as British Standards, European Standards and Australian Standards have adopted the practice of limit state designs for unreinforced and reinforced masonry encompassing several masonry units. The design of masonry structures in compression based on limit states as practiced by western codes involves three main components—the characteristic compressive strength of masonry, stress (or capacity) reduction factors and the design vertical load resistance of masonry. This research article primarily focuses on unreinforced brick masonry by determining these three key factors with a backdrop of limit state methods and evaluates its influence in the design. Thus, the computed design vertical load resistance of brick masonry is compared with results obtained by some of the mentioned international masonry codes. Further, design charts have been developed to determine the design vertical load resistance of brick masonry which serves as a ready-reckoner for computations.

Journal

Journal of The Institution of Engineers (India) Series ASpringer Journals

Published: Mar 1, 2023

Keywords: Brick masonry; Characteristic compressive strength; Stress reduction factor; Design vertical load resistance

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