Arshad Ali Javed, Wei Pan, Le Chen and Wenting Zhan
The purpose of this paper is to investigate the complex interdependence of the factors in driving or hindering construction productivity at the industry, project and activity…
Abstract
Purpose
The purpose of this paper is to investigate the complex interdependence of the factors in driving or hindering construction productivity at the industry, project and activity levels in a systemic manner.
Design/methodology/approach
A mixed-methods design, which combines a critical literature review, an interview-based survey with 32 industry experts and five focus group meetings participated in by 109 representatives of a wide range of industry stakeholder groups, was employed to identify the drivers for and constraints on construction productivity enhancement in Hong Kong and explore the interrelated insights into the drivers and constraints.
Findings
The study conceptualised and validated a systemic framework for examining construction industry productivity, and developed three causal loop diagrams (CLDs) for illustrating the dynamic structures that underpin the complex systems of the drivers and constraints.
Research limitations/implications
Although the scope of the study was limited to Hong Kong, the results could be interpreted for critical learning in other urban contexts.
Practical implications
The systemic perspective of construction productivity and the CLDs of the drivers and constraints support the systems thinking of industry stakeholders in the formulation of holistic strategies for long-term construction industry productivity enhancement.
Originality/value
The study conceptualises construction productivity from a systemic perspective and provides empirically supported CLDs to facilitate future investigations into the complex system of construction productivity.
Details
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Albert P.C. Chan, Francis K.W. Wong, Carol K.H. Hon, Arshad Ali Javed and Sainan Lyu
With increasing employment of ethnic minority (EM) workers from different nationalities to mitigate the growing demand for a construction workforce, the safety and health problems…
Abstract
Purpose
With increasing employment of ethnic minority (EM) workers from different nationalities to mitigate the growing demand for a construction workforce, the safety and health problems of these workers have become a significant concern. The purpose of this paper is to identify and rank according to severity the safety and health-related problems confronted by EM construction workers.
Design/methodology/approach
Grounded theory approach was employed to construct the main categories and subcategories of the construction safety and health problems of EM workers. A two-round Delphi survey of 18 experts, who are highly experienced in managing EM workers, was conducted to rank the relative severity of the identified safety and health problems.
Findings
A total of 14 subcategories and 4 categories of construction safety and health problems of EM workers were identified. Among the 14 subcategories, the most urgent and serious ones were insufficient safety materials and training in their native language, insufficient safety staff from EM origin, and safety communication barriers. In addition, safety and health problems at the corporate and governmental levels are also worth paying attention.
Originality/value
This study contributes to the update on the existing body of knowledge on safety and health problems encountered by EM construction workers and revelation of their peculiar situation in Hong Kong. Findings of the study will be of value to various stakeholders in formulating safety and health measures for EM construction workers.
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Chung Him Lau, Jayantha Wadu Mesthrige, Patrick T.I. Lam and Arshad Ali Javed
Project delays and cost over-runs are few common major problems arising from conventional contracts. To overcome these issues, the Hong Kong Government has been practicing the use…
Abstract
Purpose
Project delays and cost over-runs are few common major problems arising from conventional contracts. To overcome these issues, the Hong Kong Government has been practicing the use of the New Engineering Contract (NEC) forms in several public works projects. However, despite the successful outcomes and the positive signs of adopting NEC, it appears that NEC forms of contracts are not widely adopted in the Hong Kong construction industry even after 25 years of their first introduction. The purpose of this paper is to identify the challenges and barriers for not implementing NEC widely in Hong Kong.
Design/methodology/approach
Based on a questionnaire survey data collected from 45 senior industry professionals, and six semi-structured interviews, the study evaluated the perceptions of construction professionals as to why NEC is still not popular in the industry and reported the relative importance of challenges in the implementation of NEC in Hong Kong.
Findings
The results reveal that “People are not willing to change,” “Limited number of trained professionals” and “Insufficient case law and adjudication experience” are the most significant challenges and barriers in adopting NEC. These findings are also supported by the opinions of construction professionals through semi-structured interviews.
Practical implications
The findings are relevant and would benefit to the industry stakeholders for adopting NEC contracts by informing them of the most significant challenges so that proper strategies may be devised to overcoming them for early contractors’ involvement, controlling cost and time overruns in infrastructure projects.
Originality/value
The empirical evidence of the study provides an insight into the challenges faced by the construction industry of Hong Kong. NEC form of contract is the way forward in order to create a better working environment conducive for all the parties that would result in better construction project performance and productivity.
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Ann Tit Wan Yu, Arshad Ali Javed, Tsun Ip Lam, Geoffrey Qiping Shen and Ming Sun
Integrating sustainability into the value management (VM) process can provide a strategic platform for promoting and incorporating sustainable design and development during the…
Abstract
Purpose
Integrating sustainability into the value management (VM) process can provide a strategic platform for promoting and incorporating sustainable design and development during the lifespans of construction projects. The purpose of this paper is to investigate the strengths, weaknesses, opportunities and threats (SWOT) for integrating sustainability into the VM process in Hong Kong.
Design/methodology/approach
Following an extensive literature review, 45 attributes were identified and grouped into strength, weakness, opportunity and threat elements. A questionnaire survey based on these groupings was supported by semi-structured interviews with public sector clients, value managers and VM facilitators. They shared their experience and views on how to integrate sustainability into the VM exercises.
Findings
The triangulated results of the survey and interviews are presented in this paper. The ranking of the SWOT analysis results indicate that VM does provide opportunities for multidisciplinary professionals and stakeholders to focus on issues relating to society and the environment, which is considered a main strength. The major weakness of integration is the lack of well-trained staff and low levels of VM participant expertise in relation to the sustainable construction issue.
Research limitations/implications
Current practices generally neglect integration of sustainability into the VM process due to cost and time constraints. There are ample strengths and opportunities recommended by this study for integrating sustainability into the VM process which are beneficial for the clients and contractors for achieving value for money and meeting sustainability targets.
Practical implications
There are immense opportunities for integrating sustainability into the VM process, including encouragement of the reduction, reuse and recycling of construction and demolition waste. However, threats presented by integration include the additional time and costs required for achieving sustainability targets.
Originality/value
Findings and recommendations provided in this paper should be helpful to decision makers including clients and VM facilitators for the successful integration of the sustainability concept into the VM process.
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Sainan Lyu, Carol K.H. Hon, Albert P.C. Chan, Arshad Ali Javed, Rita Peihua Zhang and Francis K.W. Wong
Previous studies have highlighted that communication barrier was one of the major safety problems faced by ethnic minority (EM) workers. This study aims to model the predominant…
Abstract
Purpose
Previous studies have highlighted that communication barrier was one of the major safety problems faced by ethnic minority (EM) workers. This study aims to model the predominant safety communication networks of EM crews and explore the relationships among safety communication networks, individual attributes, safety climate, near misses and injuries of EM crews.
Design/methodology/approach
Case studies were conducted with EM crews in the Hong Kong construction industry. Demographic attribute, network, safety climate and accidents data were collected through questionnaires and analyzed by a combination of social network analysis (SNA), cross-case comparison and nonparametric tests.
Findings
The results revealed that language proficiency, network density and level of reciprocity were contributing factors of distinguishing high and low safety performing EM crews. EM management received more safety information from EM workers than local management. The centrality of EM workers was significantly related to their age, the perceived priority of safety and language ability.
Practical implications
The research findings regarding the impact of safety communication network characteristics on the safety performance of EM crews provides insights to employers on how to cultivate effective safety communication patterns within EM crews that can lead to better safety performance. The connections between personal attributes and their positions in safety communication networks could help the employers identify the EM workers who are positioned on edges of networks and need more attention.
Originality/value
This study contributes to knowledge by enriching the limited research on analyzing safety communication of small construction crews using SNA and expanding the research object to EM construction crews in the literature, who are more vulnerable to construction accidents. This research also extends the existing body of knowledge from studies mainly carried out in Western culture to Eastern culture. Although safety communication has been regarded as important for EM workers, there is a lack of quantitative analysis on this at a crew level. The present study provides empirical research to reveal authentic safety communication networks and their connections with safety performance and personal attributes.
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Arshad Ali Javed, Patrick T.I. Lam and Patrick X.W. Zou
The purpose of this paper is to focus on the challenges faced by the public and private sectors in developing output specifications for Australian public private partnership (PPP…
Abstract
Purpose
The purpose of this paper is to focus on the challenges faced by the public and private sectors in developing output specifications for Australian public private partnership (PPP) projects. In particular, this study aims to examine how the stakeholders (including facilities managers) should cater for future changes in output specifications and make them flexible enough to meet the evolving project objectives.
Design/methodology/approach
The research is based on 19 semi‐structured interviews with key stakeholders from the public and private sectors in three States of Australia where PPP procurement has been used, including New South Wales (NSW), Queensland and Victoria. The results are triangulated with relevant literature for supports and contrasts.
Findings
For PPP projects, a good set of output specifications is conducive to the achievement of value for money, innovation, risk transfer, whole life asset performance through a clear abatement regime and an effective linkage of performance criteria to the payment mechanism. For existing specifications, it was found that too many and complex KPIs were specified, which were difficult to monitor, measure and implement by the client. Very prescriptive specifications hindered innovations and did not allow appropriate risk allocation. Further, the research study suggests that after the global financial crises, the private sector had less appetite to take the patronage risks in road and rail PPP projects. To mitigate these pitfalls, it is imperative that output specifications need to be aligned with the type of PPP projects they represent; in particular foreseeable changes should be addressed by some pre‐agreed framework to facilitate negotiation.
Originality/value
The significant contribution of this research is the identification of the common issues faced in drafting output specifications for Australian PPP projects. Stakeholders of future PPP projects should find the lessons useful for achieving value for money and appropriate risk transfer, stating the user requirements through clear and concise output specifications rather than input or prescriptive specifications in procuring social and economical PPP projects. Their relationships with facilities management are highlighted.
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Arshad Ali JAVED, Patrick T.I. Lam and Albert P.C. Chan
Social infrastructure projects such as hospitals are increasingly being procured through public private partnerships (PPP). Due to their complex nature and very high operational…
Abstract
Purpose
Social infrastructure projects such as hospitals are increasingly being procured through public private partnerships (PPP). Due to their complex nature and very high operational requirements, these healthcare projects need special attention in developing robust output specifications at the early procurement stage. The purpose of this paper is to present a model framework of output specifications for adoption by public sector clients in jurisdictions planning to develop hospital PPP/PFI (Private Finance Initiative) projects.
Design/methodology/approach
The research is based on an in-depth analysis of best practices from standard and sample project output specification documents used in Australia and the UK for completed hospital projects, reinforced by interviews with key stakeholders in the two countries.
Findings
Drafting output specifications for hospital PPP projects is perceived to be a difficult and challenging task due to the complexity and changing needs brought about by evolving health policy, technology and medical advancement. The overarching target of preparing good output specification is to achieve value for money, innovation, risk transfer (including catering for changes), whole life asset performance and establishing performance criteria to link up with the payment mechanism.
Practical/implications
The proposed framework is built up from public sector requirements on the physical asset, operational services provided by the private sector, with links to payment mechanism and performance evaluation. It also addresses change mechanism as well as conditions upon hand-over back to the public sector.
Originality/value
Unlike traditional projects which are procured using prescriptive specifications, PPP/PFI projects are procured using performance based output specifications. This paper provides the foundation and a model framework for preparing comprehensive output specifications based on best practices in Australia and the UK, using hospital as the contextual background.
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Arshad Ahmad Khan, Sufyan Ullah Khan, Muhammad Abu Sufyan Ali, Aftab Khan, Yousaf Hayat and Jianchao Luo
The main aim of this study is to investigate the impact of climate change and water salinity on farmer’s income risk with future outlook mitigation. Salinity and climate change…
Abstract
Purpose
The main aim of this study is to investigate the impact of climate change and water salinity on farmer’s income risk with future outlook mitigation. Salinity and climate change are a threat to agricultural productivity worldwide. However, the combined effects of climate change and salinity impacts on farmers' income are not well understood, particularly in developing countries.
Design/methodology/approach
The response-yield function and general maximum entropy methods were used to predict the impact of temperature, precipitation and salinity on crop yield. The target minimization of total absolute deviations (MOTAD)-positive mathematical programming model was used to simulate the impact of climate change and salinity on socioeconomic and environmental indicators. In the end, a multicriteria decision-making model was used, aiming at the selection of suitable climate scenarios.
Findings
The results revealed that precipitation shows a significantly decreasing trend, while temperature and groundwater salinity (EC) illustrate a significantly increasing trend. Climate change and EC negatively impact the farmer's income and water shadow prices. Maximum reduction in income and water shadow prices was observed for A2 scenario (−12.4% and 19.4%) during 2050. The environmental index was the most important, with priority of 43.4% compared to socioeconomic indicators. Subindex amount of water used was also significant in study area, with 28.1% priority. The technique for order preference by similarity to ideal solution ranking system found that B1 was the best climatic scenario for adopting climate change adaptation in the research region.
Originality/value
In this study, farmers' income threats were assessed with the aspects of different climate scenario (A1, A1B and B1) over the horizons of 2030, 2040 and 2050 and three different indicators (economic, social and environmental) in Northwestern region of Pakistan. Only in arid and semiarid regions has climate change raised temperature and reduced rainfall, which are preliminary symptoms of growing salinity.