Abstract. The construction industry, compared to other industries, is distinguished by a small productivity of work and large fragmentation. Solution of construction-related problems requires a great deal of time and financial resources. Method of project multicriteria decision synthesis with decision success criterion is used for realisation of construction projects which require analysis of constituent parts in close relationship of components. On every level of the whole project, the decision of closeness to ideal solution method is made and, on the basis of the obtained results, several alternatives are chosen. At the last decision stage, there is performed a synthesis by the chosen alternatives and relying on their interrelations. During decision process on the intermediate stages, having eliminated irrational alternatives, effective and precise results are achieved. The developed multicriteria decision synthesis method is one of the elements of the newly created group of multicriteria decision methods. Using this method algorithm, software is prepared that entirely manages the whole decision process from database filling to calculation and result processing.

After 2020 all new buildings must be energy efficient, which means that the construction industry workforce must be prepared and up-skilled. Formal and informal continuing education must respond to these changes, which means the curriculum needs to be updated and supplemented with the necessary knowledge and skills. This article provides the forecasts for blue-collar worker demand by 2020 in the construction industry and the number of construction workers who should be up-skilled or have extra training to be able to build energy efficient buildings and to install the renewable energy systems. The need for blue-collar workers in the construction sector up to the year 2020 was estimated by the use of mathematical models and expert evaluation, as well as taking into account the Lithuanian economic growth forecasts for the year 2020, trends of employment changes in the construction sector, the impact of EU support to the national economy and other factors having significant impact on employment in the construction sector.

Building Information Modelling (BIM) is becoming a common language for the construction of buildings and infrastructure sectors worldwide. This paper aims at providing a broad picture of published journal papers on BIM application in infrastructure projects. The review is based on bibliometric analysis of 239 papers. The bibliometric analysis technique is used as the analysis method, which when compared to conventional literature reviews allows for the reduction in the likelihood of subjective judgments. The paper presents the review of BIM applications in infrastructure projects analysed within a 10-year period; the analysis of most recent studies and trends of applying BIM methodology identifies the gaps of BIM applications in infrastructure projects and defines future areas of research. Detailed analyses of citation networks present the co-occurrence map of keywords, citation patterns of journals, articles and the most cited journals in the research area. Research shows that BIM applications in infrastructure projects have been continuously growing with a sudden increase after 2016. The study reveals that the research in this area conducted mainly in isolation comprised disjointed and fragmented research studies. Some of the sources are not available in scientific databases.

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The article presents the results of the survey aimed to analyze the attitude and perceptions regarding the use of BIM for data handling and analysis. Two target groups were researched, according to the role they play in building processes, namely public administrations (including tenants, owners, and building administrators) and Professionals (engineers / architects). The study conducted during the Net-UBIEP (Network for Using BIM to Increase the Energy Performance) project. The purpose of this study was to assess the implementation of building information modeling (BIM) as a tool and a process among key stakeholders in order to understand the current use of BIM, benefits of using BIM, obstacles of using BIM as well as possible future use. This study can be used as a pre-analysis of feedback from building users and construction professionals and can contribute to the co-adaptation process between BIM knowledge providers and BIM users.