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Article
Publication date: 6 April 2021

Abdul Wahid Mohamed Safith and Lalith De Silva

Vertical alignment in high-rise building is a very important aspect. The architects are nowadays interested in improvising untypical complicated morphology in building…

Abstract

Purpose

Vertical alignment in high-rise building is a very important aspect. The architects are nowadays interested in improvising untypical complicated morphology in building designs which increase the difficulty in surveying for vertical alignments. Although the GNSS survey techniques are widely applied in constructions, there is a lack of data sources to explicitly expose their applicability in high-rise buildings and the challenges to be considered. This study has been oriented to find out the best suitable GPS survey technique for the vertical alignment in high-rise buildings and the practical challenges to be considered.

Design/methodology/approach

The findings have been attained by analyzing the reliable data gained through experts' comments through structured questionnaire survey, case studies and experiments on different GPS survey techniques.

Findings

The findings express that the GPS techniques can be used for vertical alignments in high-rise buildings except for direct setting out for which only RTK GPS can be used. There are some practical challenges to be considered in such GPS applications.

Research limitations/implications

The findings encourage the research community to further focus on the GNSS survey applications in the constructions of high-rise buildings.

Practical implications

The research expresses applicability of easier and less time-consumed modern GNSS survey techniques instead of traditional survey methods for expediting building constructions.

Social implications

The knowledge on such modern rapid survey techniques with accuracy, efficiency and reliability highly affects the process of infrastructure development.

Originality/value

The research presents a useful new knowledge on applying GNSS survey techniques for precise survey requirements in the construction industry and exposes the gateways for further researches and development.

Details

International Journal of Building Pathology and Adaptation, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2398-4708

Keywords

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Article
Publication date: 7 March 2017

Harshini Mallawaarachchi, Lalith De Silva and Raufdeen Rameezdeen

The purpose of the study presented in this paper is to determine the relationship and effect of built environment on occupants’ productivity in green-certified office…

Abstract

Purpose

The purpose of the study presented in this paper is to determine the relationship and effect of built environment on occupants’ productivity in green-certified office buildings in Sri Lanka.

Design/methodology/approach

Two research hypotheses were tested by approaching the survey method under the quantitative phenomenon. The questionnaire survey was conducted among randomly selected occupants in three selected green-rated office buildings in Sri Lanka. The survey data were analysed by using the Spearman correlation and ordinal logistic regression analysis techniques to model the relationship existing between the variables. The SPSS v20 software was used in data analysis.

Findings

The findings confirm the relationship between built environment and occupants’ productivity. As it further proves that, there is a significant effect of built environment on occupants’ productivity in green-certified office buildings. Thus, critical built environment factors influencing occupants’ productivity and their effect were determined.

Practical implications

The findings could be practically implied as bases to strengthen the evaluation criteria of indoor environmental quality in GREENSL® national green-rating system.

Originality/value

The evaluation of occupants’ productivity and the built environment factors has been at the focal point of research; however, most studies have focused on single aspects of the built environment. Further, no evidences were found on “which factors” can critically influence the occupants’ productivity in green buildings. The paper, therefore, seeks to fill this gap by proving the relationship between green built environment and occupants’ productivity.

Details

Facilities, vol. 35 no. 3/4
Type: Research Article
ISSN: 0263-2772

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Article
Publication date: 14 September 2017

K.G.A.S. Waidyasekara, Lalith De Silva and Raufdeen Rameezdeen

Water conservationists have been promoting a hierarchy of measures to preserve water resources in the face of decreasing freshwater availability in the world. However…

Abstract

Purpose

Water conservationists have been promoting a hierarchy of measures to preserve water resources in the face of decreasing freshwater availability in the world. However, applicability of water hierarchy to the construction industry is yet to be investigated. To fill this knowledge gap, the purpose of this paper is to investigate water usage, water use efficiency, and conservation measures relevant to the construction operations.

Design/methodology/approach

A triangulation-based mixed-methods approach was adopted for the collection and analysis of data. First, four case studies were carried out to explore the current practices and the possibilities of applying the water hierarchy to the construction operations. This was followed by a questionnaire survey, administered among construction professionals to obtain their views and to verify the findings of case studies.

Findings

Strategies such as reuse and recycling were found to be less applicable and least preferred by the construction professionals compared to reduce, replace, and eliminate. Based on the research findings, three enabling measures, namely, regulation, responsibility, and reward, were found to enhance the effectiveness of these conservation strategies.

Practical implications

Knowledge on preferences of different water conservation measures among the construction professionals and their effectiveness on construction site could help the construction companies to device strategies to mitigate water wastage and enhance water use efficiency. It could also help policy-makers to develop guidelines that would have higher probability of acceptance among construction stakeholders.

Originality/value

The study proposes an extended water hierarchy (3R.6R) by integrating three enabling measures discussed above for the construction project sites.

Details

Built Environment Project and Asset Management, vol. 7 no. 4
Type: Research Article
ISSN: 2044-124X

Keywords

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Article
Publication date: 14 September 2017

Piumi Chethana Walimuni, Aparna Samaraweera and Lalith De Silva

There is a growing concern that contractors can be motivated for environmental protection through effective fund allocation and proper payment mechanisms. However, an…

Abstract

Purpose

There is a growing concern that contractors can be motivated for environmental protection through effective fund allocation and proper payment mechanisms. However, an in-depth analysis of environmental hazard-controlling methods and related payments to the contractor in road construction in Sri Lanka is not much popular among the extant literature. Thus, the purpose of this paper is to explore different payment mechanisms that are being used with environmental hazard-controlling methods, to achieve better control in such hazards in Sri Lankan road construction projects.

Design/methodology/approach

This research was approached through a mixed research method. Initially, hazard-controlling methods and relative payment mechanisms for the contractor were identified through three exploratory case studies using interviews, observations and document survey. Next, the relative effectiveness of payment mechanisms for contractors for better environmental hazard controlling was identified through a questionnaire survey with a sample of 45 professionals involved in 15 road construction projects.

Findings

Based on the findings, a comprehensive list of environmental hazard-controlling methods was derived. Furthermore, four types of payment mechanisms were identified: (A)-payments, where a unit price was assigned; (B)-payments, where a provisional sum was established in the contract; (C)-payments, where fixed amounts (lump sums) were assigned in the contract and (D)-payments made along with some main work item in the contract. Relative effectiveness of these four mechanisms for better control of environmental hazards was varied for each hazard-controlling method being practiced in a road construction project.

Originality/value

These findings would be more beneficial for consultants, project managers, bidders and estimators in the pre-contract stage. This is by identifying cost items for environmental hazard controlling and selecting relatively more effective payment mechanisms to motivate contractors for better control of environmental hazards during project execution.

Details

Built Environment Project and Asset Management, vol. 7 no. 4
Type: Research Article
ISSN: 2044-124X

Keywords

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Article
Publication date: 7 November 2016

K.G.A.S. Waidyasekara, Lalith De Silva and Raufdeen Rameezdeen

The purpose of this paper is to explore ways to enhance water use efficiency at construction sites according to project stakeholders’ perceptions.

Abstract

Purpose

The purpose of this paper is to explore ways to enhance water use efficiency at construction sites according to project stakeholders’ perceptions.

Design/methodology/approach

A questionnaire survey was developed based on drivers, barriers and potential water use efficiency measures identified through a literature review. It was administered among professionals working in the construction industry who have more than ten years of work experience.

Findings

The study highlighted cost of water and sources of water as main drivers that promote water use efficiency on sites. Lack of priority for water management among host of other managerial functions was identified as the main barrier. In order to conserve water, respondents favoured “soft” measures such as changes in workers’ behaviour and managerial policies and planning for water savings, as opposed to “hard” measures which were primarily technology based.

Research limitations/implications

The major implications of the study are related to how behaviour of the workers could be changed to accommodate water use efficiency in their everyday activities. Water saving measures such as leak detection, auditing and sub-metering were favoured by respondents referring to policies and planning, as well as implementing a water action plan when a project begins.

Originality/value

This study makes a contribution to the body of knowledge on the subject of water sustainability at construction projects. This is an understudied area. In addition, the findings will enhance the understanding of construction companies on water use efficiency and should serve as a platform to develop improved and appropriate techniques.

Details

Built Environment Project and Asset Management, vol. 6 no. 5
Type: Research Article
ISSN: 2044-124X

Keywords

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Article
Publication date: 7 November 2016

Harshini Mallawaarachchi, Lalith De Silva and Raufdeen Rameezdeen

The purpose of this paper is to determine the relationship between indoor environmental quality (IEQ) and occupants’ productivity improvements in green buildings in order…

Abstract

Purpose

The purpose of this paper is to determine the relationship between indoor environmental quality (IEQ) and occupants’ productivity improvements in green buildings in order to propose probable enhancements of national green certification criteria.

Design/methodology/approach

Survey approach was selected under quantitative phenomenon. Hence, questionnaire survey was selected as a primary data collection technique. It was linked to semi-structured interviews to validate survey results. The survey data were analysed by using nonparametric statistical analysis techniques, such as significance testing and Spearman’s correlation. Statistical Package for the Social Science (SPSS) v.20 statistical analysis software was used in data analysis.

Findings

Seven factors were identified as significant factors which showed statistically significant monotonic correlation to major IEQ dimensions. Among those, air quality and acoustical partitioning factors confirmed a statistically significant weak positive monotonic correlation, whilst system control showed strongly positive monotonic correlation to occupants’ productivity in green buildings.

Practical implications

The findings can be practically implied as a basis to review the existing evaluation criteria of IEQ in national green certification system to propose probable enhancements.

Originality/value

The significant IEQ factors influencing occupants’ productivity were determined as the focal point of this research. Accordingly, new provisions were proposed to enhance the national green certification criteria.

Details

Built Environment Project and Asset Management, vol. 6 no. 5
Type: Research Article
ISSN: 2044-124X

Keywords

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Article
Publication date: 9 October 2019

Nimesha Sahani Jayasena, Harshini Mallawaarachchi and Lalith De Silva

Rapid changes in the environment escalate the requirement of environmental sustainability assessment within built environment. The purpose of this paper is to model the…

Abstract

Purpose

Rapid changes in the environment escalate the requirement of environmental sustainability assessment within built environment. The purpose of this paper is to model the environmental sustainability of facilities management (FM) functions in apparel industry in Sri Lanka.

Design/methodology/approach

A comprehensive literature review was carried out in order to identify the importance of sustainability assessment for FM, sustainable FM functions and their environmental sustainability indicators. Subsequently, a questionnaire survey was carried out to determine a relative weight of the sustainable FM functions and environmental sustainability indicators through the analytical hierarchy process analysis.

Findings

Energy management was identified as the most significant FM function in terms of environmental sustainability in apparel industry with a relative performance of 49.12 per cent. Subsequently, the functions of water management (29.39 per cent), maintenance management (11.98 per cent) and waste management (9.64 per cent) obtained the second, third and fourth ranks while asset management (7.85 per cent) was the function which had the least performance score. Relative weights for the environmental sustainability indicators were also determined.

Research limitations/implications

In respect of the apparel industry, the developed model can be utilised for assessing the environmental sustainability of FM in broader term.

Originality/value

No proper mechanism was found to assess the sustainability of FM in apparel sector since very fewer research studies were focussed on achieving environmental sustainability in different industries. Hence, the assessment of environmental sustainability of FM in apparel industry is an emerging necessity in the present day, which was addressed in this research.

Details

Built Environment Project and Asset Management, vol. 10 no. 2
Type: Research Article
ISSN: 2044-124X

Keywords

Content available

Abstract

Details

Built Environment Project and Asset Management, vol. 7 no. 4
Type: Research Article
ISSN: 2044-124X

Abstract

Details

Built Environment Project and Asset Management, vol. 10 no. 2
Type: Research Article
ISSN: 2044-124X

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Article
Publication date: 9 October 2017

Geeta H. Patel

The purpose of this paper is to trace the history and legacy of Islamic finance (IF) in Sri Lanka in the context of the emergence of life finance. It tracks the social…

Abstract

Purpose

The purpose of this paper is to trace the history and legacy of Islamic finance (IF) in Sri Lanka in the context of the emergence of life finance. It tracks the social life of finance through a genealogy of trust and capital.

Design/methodology/approach

The methodology used is qualitative. It is an extended case study using conversations, company documents and newspaper archival research.

Findings

Trust, transparency and ethics must be understood locally to have salience. The implicit effect of locally understood ideas of trust that have been built into the movement of capital (via ethical branding and transparency in IF, education and social awareness) can reconfigure relationships between communities in a country that has been ravaged by war.

Research limitations/implications

There have been few studies on IF in Sri Lanka; this study will enrich those offerings. However, they must be understood in relation to the emergence of life finance.

Practical implications

This study presents a new viewpoint on the relationship between finance and social well-being and new categories through which to understand finance.

Social implications

The implicit effect of locally understood ideas of trust which have been built into movements of capital (via ethical branding and transparency in IF, education, socially aware) can reconfigure relationships between communities in a country that has been ravaged by war.

Originality/value

There have been few studies on Islamic Finance in Sri Lanka; this study will enrich those offerings. But they must be understood in relation to the emergence of life-finance in South Asia.

Details

Society and Business Review, vol. 12 no. 3
Type: Research Article
ISSN: 1746-5680

Keywords

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