Due to the loss of financial resources and the need to optimize projects, academics, politicians and the construction industry have become increasingly aware of the challenges presented by the frequent time and cost overruns and reduced quality level of construction projects. The purpose of this study is to analyse the factors that project managers experience as having the greatest effect on time, cost and quality, and to discover whether the factors' effects are significantly different from each other. A questionnaire with 26 factors identified from interviews was sent to the full population of publicly employed project managers. Factors were ranked by using the relative importance index and tested for significant differences by applying the Friedman´s test with the Wilcoxon´s test as post-hoc analysis. From the analysis, the most affecting factor associated with time was found to be unsettled or lack of project funding. For the cost related factor, errors or omissions in the consultant material, was the most important. Finally, the quality related factor was errors or omissions in construction work. The main conclusion of this research showed that the project schedule, budget and quality level are significantly different affected. The project manager therefore cannot handle such critical issues by only focusing at schedule or budget related complication, either can the project manager assume that time, cost and quality are equally affected.

Purpose During design of reconfigurable manufacturing systems, manufacturing companies need to select and implement the right enablers of reconfigurability in accordance with the specific requirements being present in the manufacturing setting. Therefore, the purpose of this paper is to investigate enablers of reconfigurability in terms of their importance in industry, current level of implementation in industry, and significant differences in their implementation and criticality across different manufacturing settings. Design/methodology/approach A questionnaire survey is conducted, in order to provide generalizable empirical evidence across various industries and manufacturing types. Findings The findings indicate that the level of implementation of the reconfigurability enablers is rudimentary, while their criticality is perceived higher than the current level of implementation. Moreover, significant differences regarding implementation and criticality of mobility, scalability, and convertibility were found for companies with varying degrees of manual work, make-to-stock production, and varying production volume, industry type and organization size. Research limitations/implications Main limitations of the research cover the relatively small sample size and non-random sampling method applied, primarily limited to one country, which could be increased to further extent the findings reported in this paper. Practical implications The findings indicate that the importance and implementation of reconfigurability enablers is contingent on the manufacturing setting. Thus, the research presented in this paper provides valuable knowledge in regard to aiding a paradigm shift in industry and help companies design manufacturing systems with the right reconfigurability enablers. Originality/value This paper expands research on manufacturing system design for changeability and reconfigurability, by explicitly considering these as capabilities that can be enabled in various ways for various purposes in different manufacturing contexts.

Reconfigurable manufacturing has been widely labelled the manufacturing paradigm of the future, due to its ability to rapidly and costefficiently respond to changing market conditions. Manufacturing reconfigurability can be dealt with at various levels of the factory, and includes multiple design and operational issues related to both physical and logical reconfigurations. The purpose of this paper is to review state-of-the-art literature on reconfigurable manufacturing and provide an overview of the current body of research, by assessing which structuring levels of the factory and corresponding research issues that are dealt with. Conclusively, currently unexplored areas and interesting issues that could be addressed in future research are identified.

Purpose The purpose of this paper is to present a decisions support tool that can be applied in initial stages of design, for evaluating the investment feasibility of changeable and reconfigurable manufacturing design concepts, based on future demand predictions and their uncertainties. A quantitative model is proposed, which evaluates the discounted value of capital and operating costs of changeable manufacturing design concepts, based on essential characteristics regarding their type and extent of changeability. Design/methodology/approach Quantitative empirical modeling is applied, where model conceptualization, validation, and implementation are central elements, using two Danish manufacturing companies as cases. Findings The applicability of the model is demonstrated in the two case companies, highlighting differences in type, extent, and level of feasible changeability, as a result of differences in product and production characteristics. Research limitations/implications Further studies of changeability implementation should be conducted across industrial fields in order to generalize findings. Practical implications There is currently limited support for the conceptual design phase of changeable and reconfigurable manufacturing, where critical decisions regarding type, extent, and level of changeability must be made, regardless of high degrees of uncertainty about future demand scenarios. Originality/value This paper expands previous research on design for changeability and reconfigurability, by explicitly considering changeability as a capability that can be enabled in various ways for various purposes in different industrial contexts. The proposed model and the case implementations provide important knowledge on the transition toward changeability in industry.

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Mass customization is a manufacturing paradigm that enables customized and personalized design at a cost near mass production. Mass customization's ability to lower unit cost, increase quality, and shorten project duration for customized offerings is considered highly relevant for tomorrow's house building industry. Therefore, through a literature review, this research investigates state-of-the-art in mass customization in the house building industry from four perspectives: (1) mass customization in the house building industry, (2) modular and off-site construction, (3) construction supply chains, and (4) customer satisfaction. It is concluded that a great potential exists for applying mass customization in the house building industry. However, despite its potential, research on mass customization in the house building industry is sparse. In particular, research on developing the solution space and choice navigation tools is limited in this industry.

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