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Article
Publication date: 1 August 2010

Varinder S. Kanwar, Naveen Kwatra, Pankaj Aggarwal and Ramesh P. Singh

In developing countries such as India, it is common practice to use low‐quality building materials, the strength of such materials reduce with time, which affects the lifespan of…

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Abstract

Purpose

In developing countries such as India, it is common practice to use low‐quality building materials, the strength of such materials reduce with time, which affects the lifespan of buildings. The wind, rain, seepage, and surface runoff are other key factors responsible for building damage and exterior degradation. The increasing industrial growth in and around urban areas is responsible for increasing industrial and anthropogenic emissions that are found to accelerate degradation of the buildings that affects their physical appearance. In an area prone to natural hazards such as earthquakes, volcanoes, subsidence, floods, lightning, tornados, and cyclone/hurricanes, huge amounts of damage throughout the globe has been experienced. For the purpose of assuring safety due to natural hazards, it is necessary to monitor the damage for its existence, its location and extent. Undetected damage may potentially lead to risk of vulnerability caused by natural hazards and eventually to catastrophic failure. Hence, rapid structural damage detection is essential and important to save human life due to failure of structures or buildings. Most of the time, human loss occurs due to damage to the buildings. This paper aims to address these issues.

Design/methodology/approach

In the present study, numerous experiments have been carried out on two reinforced concrete building test specimens and on seven existing reinforced cement concrete structures.

Findings

The results presented here in this study show that the vibration measurements can be used to monitor the health of framed reinforced cement concrete buildings.

Originality/value

The present study is part of doctoral thesis of Varinder S. Kanwar, an original research work.

Details

International Journal of Structural Integrity, vol. 1 no. 3
Type: Research Article
ISSN: 1757-9864

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Article
Publication date: 10 October 2008

Varinder Singh Kanwar, Naveen Kwatra, Pankaj Aggarwal and M.L. Gambir

The need for structural health monitoring systems is continuously growing to maintain existing civil infrastructure. For the purpose of assuring seismic safety, it is necessary to…

598

Abstract

Purpose

The need for structural health monitoring systems is continuously growing to maintain existing civil infrastructure. For the purpose of assuring seismic safety, it is necessary to monitor the damage for its occurrence, its location and the extent of damage. Information on the damage may be utilized to make decisions on maintenance and structural safety of existing buildings, rapid evaluation of condition of damaged structure after future earthquakes, estimation of residual life of structures, feasibility of repair and retrofitting of structures, partial replacement or demolition of structure and financial planning for renovation and rehabilitation. The purpose of this paper is to present a four‐level scheme of damage detection.

Design/methodology/approach

In the first stage of the four‐level scheme, finite element model has been developed and dynamic parameters are calculated. In the second stage, change in the dynamic properties of farmed reinforced concrete building model is identified from vibration measurements under different level of controlled damage. In the third stage, search for the damaged stories containing the damaged components is carried out of the damaged model by making use of the change in modal properties. Finally, the extent of damage is evaluated by using its frequency response function (FRF).

Findings

The magnitude of FRF decreases with the increase in the level of damage in the RCC building model. The damage index for different levels of damage as calculated from the FRF magnitude indicates that damage index increases with increase in damage. The magnitude of FRF varies with the level of damage in the storey.

Research limitations/implications

Three storey RCC building model without infill wall have been considered. Damage has been induced in the building model by applying static horizontal load at the roof level.

Originality/value

The paper contains only unpublished Information derived from other publications is strictly referenced. Therefore, most of the concepts and experiences presented are new.

Details

Engineering Computations, vol. 25 no. 7
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 6 December 2022

Chhavi Jatana

This paper aims to investigate the impact of board characteristics on CEO turnover performance relationship (TPR) in Indian listed firms.

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Abstract

Purpose

This paper aims to investigate the impact of board characteristics on CEO turnover performance relationship (TPR) in Indian listed firms.

Design/methodology/approach

A subset of the Standard and Poor’s Bombay Stock Exchange 500 (S&P BSE 500) Index companies was analyzed over the period 2015–2019 using the logistic (fixed-effects) regression model.

Findings

It was found that a weak relationship exists between CEO turnover and firm performance. With respect to board characteristics, board size was found to have a significant role in strengthening the TPR. However, other characteristics, such as board independence, multiple directors, board meetings and board gender diversity, played no role in influencing the TPR.

Research limitations/implications

First, the study period is limited to five years, during which several sample firms did not face any CEO turnover event leading to small sample size. Second, this study considers only the board’s gender diversity, whereas other types of diversity are omitted. Third, this study does not differentiate between insider and professional CEOs.

Practical implications

The findings suggest that regulators should focus on the effective enforcement of laws to strengthen the TPR and improve the monitoring role of boards, particularly in emerging economies like India, which face type II agency problems in addition to traditional principal–agent conflict. The results also offer implications for corporations, investors and academic researchers, highlighting areas that need considerable attention pertaining to corporate governance.

Originality/value

This study discerns the impact of several board-related characteristics on the TPR, particularly after the introduction of the new Companies Act 2013 in the emerging economy of India, where it has not been explored extensively.

Details

Corporate Governance: The International Journal of Business in Society, vol. 23 no. 4
Type: Research Article
ISSN: 1472-0701

Keywords

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