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Nowadays it is typical that the precise use of a building becomes clear during construction. Current building processes do not support this in Finland. The objective of this study is to present a novel systematic management of the design process for flexible construction projects, from the project programming stage through to overall design, detailed designs, procurement, and handover, in a situation where the final use of the building becomes clear only during construction.

The development work included a constructive search for solutions to the problems presented above. The process developed in this study is illustrated with two case projects analysed retrospectively.

According the open building principle, buildings should be divided into two parts: a permanent base building; and modifiable interior spaces. This division should apply throughout the building's entire life cycle, starting from the beginning of the construction project. The start of the project is the time when goals should be set for the flexibility of the building. The first step in this goal‐setting procedure is to define the flexible modifiable spaces, and the second step is to dimension the permanent base building. A design procedure for this open building procedure has also been developed in the study. The study concludes that traditional boundaries and the content of design packages must be changed. These boundaries should be compatible with the appropriate bid packages and should support implementation of the construction work. The bid packages should follow the division to base building and spaces too.

The procedure proposed forms guidelines for flexible programming, basic principles for design and procurement processes. In addition, it is the starting point to transforming the Finnish standard scope of work for design corresponding to the open building approach.

The objectives of this paper are to discuss the constraints stemming from the unstructured nature of the cost estimation practice in Turkey and introduce a generic computer aided building cost estimation model based on a cost significant technique for Turkish construction sector public projects in its detailed design phase.

The research design was based on the simplified version of the bill of quantities method and a cost significant estimating model works on a cost database was suggested to overcome the problems. Underlying principles and basic steps of cost estimation based on cost significant work packages was explained by means of manual calculations.

In order to automate the manual building cost estimation process, the software based on cost significant work packages was developed.

The software is currently in the testing phase and is being used for educational purposes. Making use of both public sector and current market prices in the cost estimation process, increasing number of projects stored in the database for more accurate results, estimating costs of different types of projects and calculating the cost significant value factor more precisely by using statistical techniques, those being employed by global cost models are suggested for future research.

As the number of the similar projects in database is increased, the accuracy of the cost estimation is also increased.

Estimators and graduate students can use the software to estimate building cost of public housing projects in its detailed design phase.

In recent years, cost overrun becomes a common problem in steel building construction projects. The average percentage can vary widely depending on the project type, size, complexity and location. The steel structure change ratio in Taiwan is from 1 to 18% in statistics. The contractors always put every possible effort into preventing or mitigating project cost overruns, and one of the approaches is an accurate cost overrun risk estimate. Traditional project cost overrun risk assessment models mainly focus on macro-level evaluation and may not function well for the project-specific level (micro-level). This study creates a network-like connection model between the outcome (i.e. cost overrun risk) and the associated root causes in which the project status evaluation checklists of design, manufacturing, construction and interfaces are used to evaluate the checklists' influences through the Bayesian network (BN) composed by intermediate causes.

Due to the constraint of data availability, BN nodes, relationships and conditional probabilities are defined to establish a BN-based steel building project cost overrun assessment model following the knowledge of experts. Because of the complexity of the BN, the construction of the BN structure is first to build BN's fault tree (FT) hierarchy. And then, basic BN framework is constructed by the transformation of the FT hierarchy. Furthermore, some worthwhile additional arcs among BN nodes are inserted if necessary. Furthermore, conditional probability tables (CPTs) among BN nodes are explored by experts following the concept of the ranked node. Finally, the BN-based model was validated against the final cost analysis reports of 15 steel building projects done in Taiwan and both were highly consistent. The overall BN-based model construction process consists of three steps: (1) FT construction and BN framework transformation, (2) CPT computation and (3) model validation.

This study established a network-like bridge model between the outcome (i.e. cost overrun risk) and the root causes in a network of which cost influences are evaluated through the project-specific status evaluation checklists of design, manufacturing, construction and interfaces. This study overcame several limitations of the previous cost overrun risk assessment models: (1) few past research support assessment of cost overrun based on real-time project-owned data and (2) the traditional causal models inadequately depict interdependencies among influence factors of cost overrun at the network. The main influence factors of the cost overrun risk at the steel building projects in Taiwan were also examined using sensitivity analysis. The main root causes of cost overrun in steel building projects are design management and interface integration.

The proposed model belongs to the project-specific causal assessment model using real-time project-owned status checklist data as input. Such a model was seldom surveyed in the past due to the complicated interdependence among causes in the network. For practical use, a convenient and simple regression equation was also developed to forecast the cost overrun risk of the steel building project based on the root causes as input. Based on the analysis of cost overrun risk and significant influence factors, proper tailor-made preventive strategies are established to reduce the occurrence of cost overrun at the project.

This paper aims to provide architecture, engineering, construction and facilities management (AEC/FM) practitioners with a guiding tool for overcoming the challenges affecting their performance in adaptive reuse project.

Literature review was conducted to comprehend the challenges affecting the AEC/FM performance during the implementation of adaptive reuse projects. A case study was conducted on an adaptively reused building, located in Saudi Arabia. The case study building was converted from a bookstore into an amusement center. Document review of the as-built drawings, and a structured interview with the project manager were conducted. The study concluded with the development of AEC/FM practical guidelines, pertaining to the different involved domains.

This study indicated that the potential challenges are interrelated among the three domains. These challenges pertained to the spatial, legislative, technical, administrative and operational aspects. The findings emphasized the vital role of the integration among the AEC/FM domains, at the early project planning phases. Based on the findings, three sets of AEC/FM guidelines were developed.

Theoretically, to the best of the authors’ knowledge, this is the first study that provides a case-specific investigation of the challenges affecting the AEC/FM performance in adaptive reuse projects.

The developed practical guidelines could potentially enhance the AEC/FM performance in future adaptive reuse projects.

This study contributes to the practice of adaptive reuse projects through providing practical guidelines for mitigating the challenges that affect the AEC/FM performance in these projects.

The purpose of this paper is to identify and assess the factors affecting building services’ coordination during the design development and review stages of building projects.

Literature review and interviews were conducted to identify the factors affecting building services’ coordination. In total, 36 factors were identified under six categories: planning phase of the project; design of mechanical, electrical and plumbing (MEP) systems; construction of MEP systems; operation and maintenance of MEP systems; owner; and design team and tools used. This formed the basis of a questionnaire survey designed utilizing a 5-point Likert scale of importance. The survey was assessed by practitioners in the Eastern province of Saudi Arabia.

The top five factors include the scale and complexity of the project, the level of experience of the design team, the quality of the preliminary/conceptual design of the building project, the clarity of the requirements and objectives provided by the owner, the allotted budget for the project and communication skills of the design team members. A high level of agreement between A/E professionals and contractors, and between contractors and facility managers was noted. The research provides the ranking of the identified factors for prioritization.

The paper provides stakeholders in the building services industry with the ranks of the factors that affect building services’ coordination.

The study provided a significant contribution to research and industry, especially in the regional context, where few studies have been conducted. The findings of the study will help in the reduction of construction wastes, delays and cost over-runs.

This article aims to establish a dynamic Energy Performance Contract (EPC) risk allocation model for commercial buildings based on the theory of Incomplete Contract. The purpose is to fill the policy vacuum and allow stakeholders to manage risks in energy conservation management by EPCs to better adapt to climate change in the building sector.

The article chooses a qualitative research approach to depict the whole risk allocation picture of EPC projects and establish a dynamic EPC risk allocation model for commercial buildings in China. It starts with a comprehensive literature review on risks of EPCs. By modifying the theory of Incomplete Contract and adopting the so-called bow-tie model, a theoretical EPC risk allocation model is developed and verified by interview results. By discussing its application in the commercial building sector in China, an operational EPC three-stage risk allocation model is developed.

This study points out the contract incompleteness of the risk allocation for EPC projects and offered an operational method to guide practice. The reasonable risk allocation between building owners and Energy Service Companies can realize their bilateral targets on commercial building energy-saving benefits, which makes EPC more attractive for energy conservation.

Existing research focused mainly on static risk allocation. Less research was directed to the phased and dynamic risk allocation. This study developed a theoretical three-stage EPC risk allocation model, which provided the theoretical support for dynamic EPC risk allocation of EPC projects. By addressing the contract incompleteness of the risk allocation, an operational method is developed. This is a new approach to allocate risks for EPC projects in a dynamic and staged way.

Although various concepts and techniques are introduced to the built environment to achieve a substantially efficient building production, the effective application of these methods in projects is of immense significance to the field of building construction. Among these initiatives, lean construction and building information modelling (BIM) are mainstream endeavours that share many common principles to improve the productivity of the built environment. This study aims to explore and explain how BIM-based integrated data management (IDM) facilitates the achievement of leanness in a built environment project.

This research is conducted through an ethnographic-action research that relies on the design-science approach and case study through a collaborative research project. As participants of the project, the researchers of this study cooperate with the practitioners to design the project approach and production workflows. Research data and evidence are obtained via participative observation, including direct observation, results of activities, unstructured meetings and self-analysis.

In this study, the project and production perspectives clarify the building design and production process, as well as analyse how BIM facilitates the achievement of leanness in building design and construction. BIM-based frameworks for IDM have been developed to handle miscellaneous information and data, as well as enhance multidisciplinary collaboration throughout the project life cycle. The role of the integrated BIM model as an information hub between the building design and building construction has been identified.

The project and production views of building and construction are used in this study because the research purpose is to link the BIM-based IDM to lean construction. Although this mixed approach can slightly undermine the theoretical foundation of this study, a substantially comprehensive understanding can be gained as well.

This study provides a new perspective to understand how BIM-based IDM contributes to lean construction.

This study provides new insights into IDM in a built environment project with project and production views and presents BIM-based frameworks for IDM to achieve lean construction through the BIM process.

The researchers analyzed factors affecting the adoption of the Leadership in Energy and Environmental Design (LEED) green-building certification system in Jordan, including financial performance of certified projects along with broader barriers that may impact developers’ interest in LEED.

The authors first reviewed online data for all LEED registered and certified projects in Jordan, recruited LEED-certified project stakeholders, collected documents related to LEED projects and conducted LEED category credit summaries, financial cost-benefit analyses and spot-checking reported values in local markets. The authors then visited projects sites and interviewed various project stakeholders to understand better stakeholders' decision-making processes concerning LEED and relevant factors (financial, branding, cultural, political, etc.).

Obtaining LEED certification in Jordan was financially feasible as evinced in both the quantitative analysis and interviews. However, the authors found that there was very limited interest in LEED among Jordanian developers. Barriers included widespread cynicism toward green building concepts as well as a lack of local expertise in installing and maintaining green technologies. To overcome these barriers, the authors recommend that green building initiatives place a greater emphasis on education and public-promotion activities.

The research data were limited to projects that had successfully achieved LEED certification. Broader qualitative research conducted across the Jordanian building community could provide additional insights, but such an investigation is beyond the scope of the current study.

The complexity of adapting a Western green building standard (LEED) to a non-Western context is discussed in detail. The findings suggest that understanding regional development challenges, local markets and cultural differences is vital for successfully implementing green building certification systems.

For optimising long-term building operations, building clients need to enable integration of operational knowledge in the design process of new buildings. This study aims to investigate and compare how operational knowledge is integrated into the design of buildings and large ships, focussing on the roles affiliation and the competences of the client’s project manager play.

A cross-sectional qualitative methodology with multiple case studies (five cases) was used. In addition, ten expert interviews and two validation focus group interviews were conducted. Case studies included in-depth interviews, document analysis and observations.

The study showed that organisational affiliation, focus and competences of the client’s project management play an important role in how much effort and resources go into ensuring integration of operational knowledge in the design process. In the ship cases, projects managers’ highest concerns were operations. Yet, the fewest procedures and tools to integrate operational knowledge in design were found implemented in these cases. Contrastingly, in the building cases, where operations were not the main matter of concern of project management, a large number of procedures and tools to integrate operational knowledge in design were implemented.

To the best of the author’s knowledge, this research is the first to compare how integration of operational knowledge is taking place in the design process of buildings and large ships and identifying what these industries can learn from each other. Furthermore, it adds to the limited research on operations in large ship design.

This paper aims to develop a project success index (PSI) to benchmark the performance of building maintenance projects from a number of key performance indicators (KPIs).

The research collected 110 responses from project participants with managing building maintenance project experience of the Hong Kong construction industry via ordinary postal mail. In addition, a project success equation was formulated from the principal components analysis to generate a composite score so as to indicate the level of success of building maintenance projects.

Industry participants believe that time, cost, quality, functionality, safety and environmental friendliness can be considered as KPIs for building maintenance projects. A single index can also be computed from the project success equation to apply different weightings to the respective KPI with different significance such that the performance of building maintenance projects can be compared.

The concept of success remains vague among project participants, which makes it difficult to assess whether the performance of a project is a success or failure. The development of PSI can indicate the overall performance of a building maintenance project and quantify the success concept in a scientific manner.

PSI‐Mains indicates the success level of a building maintenance project for benchmarking purposes. It also enables project stakeholders to measure the success of a building maintenance project and to compare the relative success level among different building maintenance projects in a scientific manner.