PurposeIn an attempt to create national harmonisation of legislation, a set of model Work Health and Safety (WHS) Regulations were developed in Australia. These regulations require principal contractors to undertake specific WHS planning and coordination activities if the construction works to be completed cost AU $250,000 or more. However, there are some doubts about the usefulness of this monetary threshold. This study aimed to investigate how effective this threshold can be in Australia.Design/methodology/approachTo evaluate the performance and operation of this threshold in the Australian construction industry, this study modelled the costs of construction for four construction project scenarios – small classroom, two-storey home renovation with adjacent pool, small commercial warehouse and single-storey house (volume home builder) – under various conditions based on historical data (2011–2017) and in eight Australian jurisdictions.FindingsAmong the six study factors (i.e. the types for construction, geographical location, design specification, delivery method, contracting approach and inflation), the research found considerable variation in the operation and performance of the monetary threshold.Originality/valueThe research highlights some potential challenges associated with the use of a monetary threshold in the regulation of WHS planning in construction projects. Thus, the results are expected to contribute to addressing these challenges, leading to the development of an appropriate balance to achieve efficient and effective WHS regulation in Australia.

PurposeBasic project control through traditional methods is not sufficient to manage the majority of real-time events in most construction projects. The purpose of this paper is to propose a Dynamic Scheduling (DS) model that utilizes multi-objective optimization of cost, time, resources and cash flow, throughout project construction.Design/methodology/approachUpon reviewing the topic of DS, a worldwide internet survey with 364 respondents was conducted to define end-user requirements. The model was formulated and solution algorithms discussed. Verification was reported using predefined problem sets and a real-life case. Validation was performed via feedback from industry experts.FindingsThe need for multi-objective dynamic software optimization of construction schedules and the ability to choose among a set of optimal alternatives were highlighted. Model verification through well-known test cases and a real-life project case study showed that the model successfully achieved the required dynamic functionality whether under the small solved example or under the complex case study. The model was validated for practicality, optimization of various DS schedule quality gates, ease of use and software integration with contemporary project management practices.Practical implicationsOptimized real-time scheduling can provide better resources management including labor utilization and cost efficiency. Furthermore, DS contributes to optimum materials procurement, thus minimizing waste.Social implicationsOptimized real-time scheduling can provide better resources management including labor utilization and cost efficiency. Furthermore, DS contributes to optimum materials procurement, thus minimizing waste.Originality/valueThe paper illustrates the importance of DS in construction, identifies the user needs and overviews the development, verification and validation of a model that supports the generation of high-quality schedules beneficial to large-scale projects.

PurposeThe rapid development of the construction industry requires effective ways to monitor and control the project, and the use of 4D BIM is found to be very efficient. The purpose of this paper is to consider development, application and evaluation of 4D Bridge Information Modelling (BrIM) models for an ongoing bridge project.Design/methodology/approachAn ethnographic action-based case study research methodology is adopted in this study. An ongoing bridge construction project in India is chosen and the 4D BrIM application is evaluated both quantitatively and qualitatively using planned percentage complete (PPC) measurements and semi-structured interviews, respectively.FindingsThe evaluation of the case study shows an increase in PPC values from 26.5 to 56.4 per cent after implementation of 4D BrIM in the project. The application of 4D BrIM in the construction phase benefits the project team in material delivery planning, project monitoring and control, construction schedule improvement, documentation and coordination.Practical implicationsThe developed models are practically applied to the ongoing project and the positive benefits are observed. It is shown that 4D BrIM has the potential to improve the construction of bridge projects.Originality/valueStudies have contributed towards the development and implementation of 3D BrIM models for bridge projects. Limited efforts have been taken to analyse how 4D BrIM models help in the overall management of bridge projects. This study adds value to the existing literature through development, implementation and systematic qualitative and quantitative evaluation of 4D BrIM models.

PurposeConstruction industry hesitates to associate Green concepts on building projects mainly due to its high initial investment cost. Even if it is economical in the long run, often the benefits are suppressed with the costs generated through non-value-adding activities in the construction process. Lean construction principles have proved to eliminate such waste while enhancing the construction process. Thus, the purpose of this paper is to explore the applicability of the integration of Lean and Green concepts in the construction industry.Design/methodology/approachThe fundamental principles of both Lean and Green construction were evaluated through an extensive literature survey. A qualitative approach was adopted, and thus, based on the literature findings, expert interviews were conducted with professionals having experience in both Green and Lean concepts. Furthermore, the findings were validated through experts to analyse the adaptability of the integration. Content analysis technique was utilised with NVivo software programme to analyse the findings.FindingsThe integration of the Green concept was found to alter the traditional application of Lean concept, considering the social and environmental aspects without limiting to economic considerations. The study revealed that the perception of the Sri Lankan stakeholders towards the application of integrated Lean-Green concept is focussed on a positive direction. As a result, the identified enablers to implementing the integrated concept supersede the barriers by confirming the appropriateness of the application in the local construction industry.Originality/valueA framework was developed through the findings to guide the implementation of integrated Lean-Green application in Sri Lankan context.

PurposeDespite the pressures around the world to retrofit existing buildings to have higher energy performance, still the level of adoption and implementation of Building Energy Efficiency Retrofits (BEER) appear comparatively low. The purpose of this paper is to explore the barriers that affect the successful implementation of BEER in actual project level executions and identify strategies to overcome such barriers.Design/methodology/approachIn total, two case studies were conducted in selected hotel buildings to explore the barriers that hamper the adoption and implementation of BEER in the local context and in turn identify the strategies to overcome them. Altogether 11 semi-structured interviews were conducted with respondents involved in different phases of these BEER projects. The data were analysed using code-based content analysis.FindingsAltogether 38 barriers were identified under the three main project phases. Furthermore, the study revealed 77 strategies to overcome the identified barriers, classified as individual, organisational and national level strategies.Originality/valueThis paper has made a unique contribution to the field by identifying the barriers in each phase of BEER projects and proposing strategies to be taken at different levels to overcome them. The findings of this study will provide a basis for setting up country-wide and organisation-wide strategies for successfully improving the energy efficiency of existing hotel buildings.

Purpose Earlier studies on risk evaluation in private finance initiative and public private partnerships (PFI/PPP) projects have focussed more on quantitative approaches despite increasing call for contextual understanding of the bankability of risks. The purpose of this paper is to explore the perspectives of UK PFI financiers’ regarding the bankability of four critical risks (construction and completion risk, operations, supply and offtake risk) in PPP projects. Design/methodology/approach Multiple case study strategy was adopted to investigate the phenomenon within real-life context of PFI/PPP projects in UK. Using purposive sampling approach, the study examined school and road PFI/PPP projects through interviews, documentations and focus group discussions. Findings Results from the study unravelled 36 suitable bankability criteria and some mitigation strategies for evaluating the four critical risks in PFI/PPP during due diligence appraisal. Further evidences from the study also show that, financiers’ bankability criteria, when paired along with corresponding risks and mitigation strategies within with a single framework, provides a quick and effective view of bankability of risks in PFI/PPP funding application. Research limitations/implications In order to ensure generalisability of findings, only projects with similar nature were selected from just two sectors of the UK economy (road and education sectors). The context of the study is also based on UK’s PFI/PPP and Construction Industry, as such, other geographical regions in Europe and beyond have not been contextualised in this study. Due to the significance of finance in PFI/PPP contracts, only the perspective of project financiers have been explored in this study. Practical implications This study provides a less complicated but useful understanding of how risks in PFI/PPP projects may be packaged in a bankable manner to secure the confidence of project financiers. By presenting a qualitative framework, the study addresses concerns of over quantification of risk analysis in PFI/PPP appraisals and provides a relatable approach useful for non-finance oriented PPP practitioners. Social implications This study addresses the social concerns of too much complexity and ambiguity in PFI/PPP structuring especially regarding factors that could make a project acceptable to lenders. Originality/value The study proposes a “Bankability and Risk Qualitative Framework”, which presents bankability information on critical risks in clear manner and represents critical parameters for winning financiers’ funding approvals for PFI/PPP projects.

PurposeThe purpose of this paper is to validate perceived benefits and challenges of managing change in Building Information Modelling (BIM) Level 2 projects and to further explore the opportunities for enhancing the benefits and reducing the challenges. This research is timely because, hitherto, the benefits and challenges of managing change in BIM Level 2 remained largely unvalidated and the opportunities for enhancing the benefits and reducing challenges remained relatively unexplored.Design/methodology/approachA combination of a questionnaire survey and interviews with BIM Level 2 practitioners in the UK was employed in this study. In all, 41 responses were received from the questionnaire survey and ten subsequent interviews with BIM practitioners were carried out to explore opportunities for reducing challenges and increasing benefits of managing change in BIM Level 2 projects.FindingsThe study confirms benefits and challenges of managing change in BIM Level 2 projects identified and synthesised from literature, a much needed validation. Additional benefits and challenges were also identified in this study, such as cost saving and risk reduction (benefits) and social dimension issues in the BIM Level 2 processes (challenges). Opportunities identified to enhance benefits and reduce challenges were mainly socially driven, and were either reactive or proactive in nature.Research limitations/implicationsOpportunities for reducing challenges and increasing benefits identified from this research can inform the change management processes in BIM-Level 2.Practical implicationsThe findings provide concrete basis for shaping BIM Level 2 change management processes and requirements.Social implicationsThe identification of behaviours as shaping the social requirements for BIM-Level 2 confirms the need for a socio-technical approach to successful BIM implementation.Originality/valueThe identification of behaviours as shaping the social requirements for BIM Level 2 confirms the need for a socio-technical approach to successful BIM implementation.

Purpose One of the solutions to manage large public projects that are complex and difficult to manage is through relationship management. Although formal and relational approaches have been adopted in managing relationships, it is widely recognized that participants from developed and developing economies have different mindsets toward these two approaches. The purpose of this paper is hence to elucidate the more effective practices for managers to manage relationships in large public projects that are in countries of different sizes and stages of development. Design/methodology/approach A structured questionnaire survey was conducted. Multiple stakeholders involved in public construction projects in Singapore and China that include public sector clients and consultants, private sector contractors and conszultants, were approached for data collection to provide information on one of their completed large public project. Findings Both Singapore and China primarily adopt contractual governance by making rational decisions, pursuing profit and using the contract to guard against trouble. Participants in Singapore are more deeply committed and work more collaboratively than their counterparts in China. Project partners in China build stronger relationships, which may be due to the importance of “guanxi” to conduct business activities there. Originality/value The comparative study provides managers with different sets of governance practices to adopt to improve the relationships with public clients in large public projects under different environments. In large public projects in developed countries, participants should rely more on relational practices that show commitment and teamwork, while those in developing countries participate in activities that build up their social networks.

PurposeThe purpose of this paper is to explore and evaluate the problems encountered by five major road projects recently implemented in Greece as public–private partnerships (PPP) and make recommendations for improvement of the relevant managerial practices and contractual clauses for the benefit of similar future projects.Design/methodology/approachA qualitative approach was adopted in this research as only senior engineers with specific managerial experience were deemed suitable for the purposes of this research. In total, 15 semi-structured interviews were conducted with CEOs of the PPPs and heads of independent engineers involved in the projects’ implementation as well as with senior officials of two Greek Ministries.FindingsThe experts identified different areas of weakness relevant to the revenue risks, the planning of the scope, the management of designs and legal permits as well as the toll policy selected. They also made specific recommendations for the streamlining of the relevant procedures in the future.Practical implicationsThe experts’ opinions and recommendations constitute a solid basis for the achievement of higher efficiency in the management of future PPP projects worldwide.Originality/valueThis research offers a holistic perspective to PPP project management as it sheds light to the problems encountered by the Greek PPP programme as a whole and incorporates the experience gained at the contracts’ renegotiation. The research draws from the experience of experts and offers recommendations for systemic improvements which can be widely applied in any geographical context.