Inevitably, the 21st century has initiated a series of developments in the construction industry, leading to its digitalization and resulting in a series of innovative approaches and practices. At the same time, the construction industry, being one of the main global environment polluters, should fulfil well-established, as well as novel, sustainability requirements in order to evolve in harmony with the rising concerns on the availability of natural resources. This overview study aims to present the main developments, research, and scientific challenges in the field of sustainable construction, emphasizing the field of energy. The study aims to present a state-of-the-art scientific discussion on the sustainable built environment topic by analyzing cutting edge topics in the fields of building elements and whole building energy assessment, of indoor air quality and low carbon buildings, as well as on sustainable energy systems and smart buildings. The study also presents the state-of-the-art in existing tools which are adopted for the assessment of the sustainable built environment, including the use of digital tools and building information modelling for the energy assessment of the built environment, as well as the application of Life Cycle Assessment on building-related processes. Cross cutting issues related to the analysis of the building sector in the Industry 4.0 era, such as sustainability management topics and environmental geomatics are also discussed. The study concludes in those fields which will be of interest of the scientific community in the following years, towards achieving the goals of the sustainable development of the building sector.

The objective of the work is to assess the advantages of the laser scanning system in the topographical surveys. The analysis and assessment of two methods, the classical total station method and mobile laser scanning are presented in the article. The results of the performed investigations have been compared, the technological characteristics and accuracy of the investigations have been presented, as well as the procedure of the topographic image formation, possibilities and efficiency have been assessed. The real-life topographic survey’s projects on the analysis of roads and streets (components) have been used where the ground surface, the components of the roads and the surrounding objects have been analysed. The analysis provides information on the availability and potential of the investigated methods and the final attained accuracy due to a certain number of the control points. The obtained results indicate that the main differences of the methods revealed when compiling the topographical images for urban or rural areas are the speed of measurements and data processing, level of detail of the results and various possibilities of the method implementation.

Topographical maps are usually made for already existing roads, for their reparation, reconstruction and inventory. The measurements can be made using different measuring methods and a large range of geodetic instruments, from the optical instruments to laser scanning systems. The quality of topographical maps is very important, because roads (streets) are strategic object of a country.The aim of this study was to evaluate the differences between the current measurement methods of producing topographic maps, namely, laser scanning and tachometry. The measuring methods for road and street mapping were analysed and compared, including their technological properties, potentials and efficiency. The results show that the main differences between these methods in composing topographical maps is the measurement and data informativeness, the speed of processing, the level of detail of the results and applicability possibilities.

Research (surveying) was conducted in certain stretches of railway infrastructure. Only higher categories (I and II) roads, which need more careful supervision, were analysed in the research. More stringent requirements due to higher maximum speeds allowed are applied for them. Only roads between stations were selected because more favourable conditions affect their state and they are characterized by greater lengths. Selection criteria and five objects that match the collected data analysis are displayed in table 1. Methods DONATAS REKUS Doctor of technology science, Assoc. prof, Kaunas University of technology, Faculty of Civil Engineering and Architecture Main research area Calibration of geodetic instruments, height measurements, geodetic scanning technologies Address Studentu str. 48-418,

In rural development land use projects it is important to assess the impact of solutions on sustainability of territory development and the planned field of activity as well as economic, social, natural environment and landscape. The article is intended to find out whether projects are prepared on the basis of all legal acts and regulations. New methodology which could assist in analyzing and evaluating solutions of rural development land use projects concerning selection of a location for a farmstead and/or construction area of buildings essential for agriculture is proposed. Special attention is paid to reclamation, special land and forest use conditions, soil, ecological stability of agricultural utilities, impact on the environment and landscape. Recommendations for compiling a more precise and efficient report into solution impact assessment are provided.