Dušan Burák

Bio: Dušan Burák is an academic researcher from Technical University of Košice. The author has contributed to research in topics: Physics & Life-cycle assessment. The author has an hindex of 2, co-authored 2 publications receiving 10 citations.

Evaluation of Family Houses in Slovakia Using a Building Environmental Assessment System

Abstract: The presented study is focused on the verification of a Building Environmental Assessment System (BEAS). A total of 13 detached family houses representing typical construction sites in Slovakia were chosen for analysis, evaluation and certification by using a BEAS which contains several main fields: A—Site Selection and Project Planning; B—Building Construction; C—Indoor Environment; D—Energy Performance; E—Water Management; and F—Waste Management. The results of this study show that the current construction method for family houses does not respect the criteria of sustainable construction as much as it possibly can. The reason for this is that investment costs for construction are prioritized over environmental and social aspects. Therefore, one house with a score of 1.10 is certified as BEAS BRONZE, ten family houses with scores of 1.56–2.88 are certified as BEAS SILVER and only two family houses with total scores of 3.59 and 3.87, respectively, are certified as BEAS GOLD. The overall results show that the weakest fields of sustainability are Waste management, Energy performance and Building construction. The best-rated fields are Site Selection and Project Planning, Indoor Environment and Water Management. In the future, it is essential to pay attention to those areas where the sustainability criteria have not been reached, as well as to raise project teams’ awareness of sustainability issues and subsequently to transfer them to building practices.

Analysis of alternative designs for the reconstruction of an administrative building – case study

Abstract: An old office building located on the Garbiarska street, historic part of Kosice city, east of Slovakia was selected because it represents a brownfield and necessarily requires reconstruction. This study is aimed at the analysis of two design alternative solutions to underline the architecture of the reconstruction in terms of sustainability criteria taking into account the significance of the history of the city and its surroundings. Performed SWOT analysis considered strengths and weaknesses of restoration, opportunities and threats, shows that the most suitable is considering a restoration strategy in terms of preserving cultural heritage, at the same time restoring the building in the concept of green architecture. It is more than necessary to prioritize this renovation strategy over an economically viable renovation while maintaining the inappropriate height of the office building. This early analysis confirms the significance of the revitalization of territories in connection to the improvement of quality of life, the enhancement of the historical value of the locality and the creation of new economic opportunities.

Investigating the embodied energy and carbon of buildings: A systematic literature review and meta-analysis of life cycle assessments

Abstract: Life cycle assessment is a tool to quantify the environmental impact of products and has been widely studied in the building context. This is an important context given the building sector's substantial embodied energy and carbon. Against this backdrop, this study has two main objectives. The first objective is to create a benchmark the environmental impact of buildings. The second objective is to develop a procedural guideline that assists practitioners in decreasing the environmental impact of buildings. To achieve these objectives, a systematic review of the relevant literature was conducted to categorize and summarize relevant studies. A meta-analysis followed to synthesize the life cycle assessment results that emerged from the collected articles. The articles were categorized into two main groups: articles on construction materials and articles on entire buildings. Eight construction materials (i.e., concrete, reinforcement bars, structural steel, timber, tiles, insulation, and plaster) and three building types (i.e., concrete, timber, and steel) were identified, and related embodied energy and carbon were extracted. Subsequently, the data were analyzed through descriptive and inferential statistics. Findings from the meta-analysis informed a regression model, which in turn informed a procedural guideline for practitioners who seek to reduce buildings' environmental impact. Further, the findings of this paper shed light on previously equivocal results concerning the impact of construction materials and buildings, but also support previous findings for structural materials, showing, for example, that the use of timber structures results in substantial savings over concrete structures in terms of both embodied energy (43%) and carbon (68%).

Teaching multi-criteria decision making based on sustainability factors applied to road projects

Abstract: Currently, there is a need for civil engineering programs to train their students in subjects associated with sustainability. Additionally, civil engineers in their work must constantly make decisions, so their training is necessary. Therefore, the goal of this research is to present a methodology for teaching multi-criteria decision-making methods in the context of civil engineering and road infrastructure projects using sustainable factors. To achieve the objective of this study, a decision-making simulation activity has been designed based on a five-step research process: (1) definition and contextualization of the case study; (2) design and planning of the simulation activity; (3) implementation of this activity; (4) evaluation of indicators; and (5) statistical analysis of metrics. The teaching methodology used is of a practical-theoretical type and allows for the step-by-step teaching of three multi-criteria decision making (MCDM) methods that, according to the literature review, are widely used in the architecture, engineering, and construction (AEC) industry. This teaching activity is intended for undergraduate students and professionals in the AEC industry who require a decision-making tool that promotes transparency in problem-solving and who have no knowledge of MCDM. The results obtained in this research show that the method perceived by the group of students with the least difficulty was the weighting rating and calculating (WRC), because of its previous familiarity and use in academic environments. It is recommended that MCDM methods be taught in semester courses to students in training so that they can develop a deep understanding of these tools and can demonstrate their usefulness for decision making where there are many variables to consider, where there are many decision-makers, and for the incorporation of sustainable factors for project evaluation.

Value assessment for the restoration of industrial relics based on analytic hierarchy process: a case study of Shaanxi Steel Factory in Xi’an, China

Abstract: Concomitant with the promotion of industrial transformation, sustainable development strategies, and accelerated urbanization, there has been an increase in the number of industrial relic restoration projects. However, there are many disputes over the value and development of such industrial relic restoration projects. In this work, we identified three evaluation indicators based on a study of 106 industrial relic restoration projects in China. A value assessment model composed of five parts combining the Delphi method and analytic hierarchy process was established. The results show that an effective assessment of the value of industrial relic restoration projects can enable the effective use of green technology, reduce construction costs, protect industrial heritage, and inherit historical culture. In addition, there are many uncertain factors in developing these projects, such as brownfield pollution and dilapidated buildings, and appropriate renewal strategies can reduce safety risks as well as maximize the heritage value. As there is limited research assessing the value of industrial relic restoration projects in China, our study can serve as a reference for the value assessment of existing building restoration projects including historical blocks and livable villages.