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Contractors’ personnel play a prominent role in enhancing the constructability of facilities design, construction and assessment. Looks at the constructability concepts identified by the Construction Industry Institute at Austin, Texas (CII) and represents and describes the constructability concepts in relation to contractors’ personnel. Discusses the role of each of them in enhancing constructability of facilities projects. Concludes that a set of obligations are the answer to the question of “How can the contractor’s personnel enhance the project constructability?”.

The purpose of this paper is to investigate delay factors within private housing construction in Northern Ireland. Delays are inherent throughout the construction industry and create major difficulties in terms of project performance and client satisfaction. Whilst a voluminous body of international literature has investigated pertinent delay factors within construction projects, there is a relative paucity of research which offers a more delineated exploration of delay factors affecting private housing development schemes, particularly in the UK context.

This study applies questionnaire survey research to examine the relative importance of 75 delay attribute factors for housing construction projects in Northern Ireland. The approach applies both a relative rank and principal component analysis to distil the key factors impinging upon the delay process in housing construction.

The key finding from this research is that delays within the housing construction sector in Northern Ireland can be attributed to deficiencies in site management, ineffective communication strategies and a lack of coordination between key stakeholders involved in the construction process.

The study adds to the existing knowledge base and provides stakeholders with information on factors, which, if properly risk assessed and understood, can improve housing construction performance. The findings are of relevance to construction industry practitioners, policy makers and researchers with lessons learned serving as a basis for future policy development as well as affording an information platform for improving the efficiency and expediency of housing provision internationally.

Labour usage represents one of the critical elements in the Malaysia construction industry due to severe shortage of local workers. This paper aims to present a construction performance comparison between conventional building systems and industrialised building systems (IBS).

Data were obtained from 100 residential projects through a questionnaire survey in 2005. A total of 100 respondents participated in this study.

Analysis of variance (ANOVA) results indicated that the actual labour productivity comparison between conventional building system and IBS was significantly different. Further, the comparison of crew size indicated that the conventional building system of 22 workers was significantly different from the IBS of 18 workers. Similarly, the cycle time of 17 days per house for conventional building system was found to be significantly different from the IBS of four days. However, the conventional building system was found to be insignificantly different from the IBS in term of structural construction cost.

The results acquired from this study could be used by project planners for estimating labour input, control costs and project scheduling. Additionally, they could be used to determine the most appropriate structural building system for executing a construction project at the conceptual stage.

A significant amount of work has been performed in the area of identification of factors affecting construction productivity. Previous studies have tried to determine the most important factors affecting construction productivity in different countries for a long time. As a result of continuous effort in this direction, researchers have identified a wide range of factors. While the subject area has matured, no general agreement could be made on the factors affecting construction productivity. To fill this gap, the purpose of this paper is to undertake a comprehensive systematic review of mainstream studies on factors affecting construction productivity published in the last 30 years (1986–2016).

A total of 46 articles from different sources such as journals, conference proceedings, dissertation and PhD theses were identified and thoroughly reviewed.

Gaps in research and practices are discussed and directions for future research have been proposed. The literature review indicates that despite noticeable differences in the socio-economic conditions across both developed countries and developing countries, an overall reasonable consensus exists on few significant factors impeding productivity. These are, namely, non-availability of materials, inadequate supervision, skill shortage, lack of proper tools and equipment and incomplete drawing and specifications. Nevertheless, implications of technology, site amenities, process studies, project culture, and impacts of physiological and psychological factors were not adequately covered in existing literature. The study also found that traditional construction projects have remained the main focus of these studies while green construction projects have been generally overlooked.

The review does not include studies that report productivity at the organisational or industry level as well as total factor productivity. The scope of the review is limited to work on identification of factors affecting productivity at the activity level in construction projects.

The outcomes of this study would help researchers and practitioners by providing the findings of previous studies in a concise manner. It is also expected that presenting a deeper and wider perspective of the research work performed until now will direct a more focussed approach on productivity improvement efforts in the construction industry.

This review paper undertakes a comprehensive systematic review of studies on identification of factors affecting construction productivity published during the last three decades.

Construction labour productivity is of great interest to practitioners and researchers because it affects project cost and time overrun. This paper evaluates and ranks the importance, frequency and severity of project delay factors that affect the construction labour productivity for Malaysian residential projects.

A total of 100 respondents consisting of 70 contractors, 11 developers and 19 consultants participated in this study. The respondents were asked to indicate how important each item of a list of 50 project related factors was to construction labour productivity. The data were then subjected to the calculation of importat indices which enabled the factors to be ranked.

The five most important factors identified by them were: material shortage at site; non‐payment to suppliers causing the stoppage of material delivery to site; change order by consultants; late issuance of construction drawing by consultants; and incapability of contractors' site management to organise site activities. On the other hand, the five most frequent factors were: material shortage at project site; non‐payment to suppliers causing the stoppage of material delivery to site; late issuance of progress payment by the client to main contractor; lack of foreign and local workers in the market; and coordination problem between the main contractor and subcontractor.

The inferences drawn from this study could be used by the project managers to take account of these factors at an early stage, hence minimising the time and cost overrun.

An accurate estimation of project costs is always a great challenge for a construction company, particularly when there is a commitment with the owner to achieve a project at a given price. It is thus essential to develop technical and logistic solutions (TLS) ensuring a good organisation and improving the productivity. These improvements are not yet well assessed because relevant models are not available at the right time. This paper presents a new approach for assessing productivity by using an analytical cost model and indicators widely used to measure the site productivity. A case study is described to validate the cost and indicator model. They can be used in a decision making process consisting of a comparative study of different TLS in order to select, in a predicted term, the TLS ensuring the best productivity. A decision support system for generating different alternatives to be compared is currently under development.

This chapter provided systematic and comprehensive analysis on trawl fisheries management and conservation measures in the Straits of Malacca. Detailed analysis is conducted on Malaysian fishery management framework particularly domestic country's trawl fishery status, legal structure, input-control strategies, ecosystem protection plan, pollution, law enforcement, and complementary measures that designed to reduce and prevent overfishing in the exclusive economic zone (EEZ) of Malacca Straits. Gaps and challenges found in existing trawl fisheries literature are presented followed by recommendations for improvement in the management and conservation of trawl fisheries.

The purpose of this paper is to investigate the major challenges faced by Chinese international contractors (CICs) in the Malaysian construction industry.

An exploratory sequential mixed-methods research approach was adopted where following a detailed literature review and semi-structured interviews with local professionals, 20 prevalent challenges experienced by CICs are identified. Subsequently, a questionnaire survey was used to elicit the views of 100 construction practitioners. Descriptive statistics were used to prioritise the challenges, while exploratory factor analysis was conducted to uncover the underlying factors.

The five most crucial challenges identified relate to: changes of regulation, cost control, contract clauses, language barrier and quality control. Exploratory factor analysis revealed four major underlying dimensions of these challenges, in connection to financial and government policy management, organisational performance management, supplier relationship management and cross-cultural management.

The challenges are considered primarily involving CICs in the context of Malaysia; further work can be extended to Western or other East Asian, such as Japanese and Korean, international contractors undertaking construction projects in Malaysia or selected developing countries around the region.

This study will benefit professionals involved with China-backed construction projects in countries sharing demographics and socio-economic characteristics akin to Malaysia. The outcome of the study is expected to facilitate project managers to devise proactive risk-mitigation measures to reduce the impact of these challenges and to improve project delivery.

The paper examined the challenges faced by CICs in the Malaysian context. This is a timely study, as China’s Belt and Road Initiative will provide considerable opportunities for Chinese companies in Malaysia.

The aim of this study is to construct a model that can be used to predict the architect's overall performance in the Nigeria building delivery process and to provide adequate understanding of the criteria which constitute the model. Architect performance criteria were identified from existing literature within the domain of architect responsibilities and developed into a two‐part questionnaire survey. The survey involves clients of recently completed building projects in Nigeria. The first part of the questionnaire survey consists of 71 clients which were used to construct the model while the second part consists of another 17 clients which were used to validate the model. Based on this data, a predictive discriminant analysis model of two‐group cases (good and poor performance) was developed. The model shows that the predicted architect's overall performance is significantly correlated with the actual validated client ratings (0.783 at 99% confidence interval). The results show that if architects want to achieve good performance, they should give a high level of performance to ‘effective communication of design to contractor and other participants’; ‘effective constructability review’; ‘assistance in quality management strategies and clarity and consistency of specification with drawings’. The study would give architects a fore knowledge on how to ensure good performance in their future enterprise.

The dynamics and effects of interconnected risks among construction organisations tend to be overlooked across the Malaysian public project supply chains, making them highly vulnerable to supply chain disruptions. This study aims to investigate this dynamism by assessing the supply chain’s critical vulnerabilities and capabilities that formulate the level of resilience in handling disruptive events in construction projects.

A comprehensive questionnaire survey was conducted with 105 construction professionals from two groups of respondents, the public and private organisations that work in public projects to identify their current vulnerabilities and capabilities. Data were analysed and compared using the Mann–Whitney U and Kruskal–Wallis tests.

The findings revealed that the top five critical vulnerability factors of the supply chain include political or regulatory changes, market pressures, management, financial and strategic vulnerability. Further comparisons highlighted that the public organisations faced significantly higher political threats compared to the private organisations whilst the private organisations faced significant market pressures. The survey also shows that despite the private organisations’ high capability in financial strength, the public organisations’ financial vulnerability has destabilised the entire supply chain.

This study presents the construction supply chain’s vulnerabilities in a layered framework approach that can provide managers a new perspective on the dynamics of the cascading impacts of these vulnerabilities when observed through several layers of supply chains.