The aim of this paper was to generalize corporate management methods of investment and construction activities in the context of increasing urbanization challenges and the need to implement new approaches to the goal setting and completion of housing construction. The methodology under development is aimed at ensuring the economic efficiency of large corporations, which task cannot be achieved without a strategic orientation of their activities. In this study, classification of corporate management methods was related to corporate business patterns, which are increasingly acquiring the form of holding structures. This is due to the need of managing a growing number of divisions and an infinite variety of business operations serving all stages of the life cycle of real estate projects. In practice, a holding is a successful resolution of the basic conflict between the growth of economic units and coherent preservation of their activities. The latter can only be achieved provided valid managerial decisions. The managerial decision-making logic and the methodology of strategic decisions were analysed as regards to the operational peculiarities of holding structures. Among the methods of strategic decisionmaking, particular attention was paid to portfolio, analytical, indicative, calculation and estimating methods. Practical application of corporate management methods in the context of emerging challenges and their prioritization can be essential under an increasing popularity of block chain technologies. This will enable storage of data on the maintenance of real estate facilities throughout their life cycle. Generally, the extended use of block chain technologies is a necessary step among an increasing number of corporate participants focused on problem solving at different implementation stages of housing construction projects.

This research aims to identify professions necessary for the formation of smart cities, as well as risks associated with the emergence of such entities. We applied a market (comparative) approach for the analysis of digital technologies and professions suitable for Industry 4.0. It was found that a “smart city” has several interrelated dimensions: “smart economy”, “smart environment”, “smart people” and “smart technologies”. In order to reduce risks when building such a complex system, significant changes to the education system are required. Due to these changes, many professions and industries involved in the field of digitalization and “smart cities” will be created. These professions may range from specialists in bioinformatics and operators, who form and apply computational methods, to those working in the field of cyber pharmacy with big data. Planning of “smart cities” requires improved living standards, including energy efficient utilities, educational performance, public safety, etc. To implement the concept of “smart city” in a comprehensive way, it is important to provide highquality training and retraining of specialists, introduce new specialties in universities, generate employment mainly in smart working and establish an ongoing environment, including the business one, for boosting innovations.

The aim of the research is to analyse the status of the low-pressure gas distribution system functioning in of the Angarsk urban district (AUD), as well as to identify possible directions for its reconstruction and modernization. These measures are aimed at developing the housing stock and the capacity of industrial enterprises. The number of local and distributed consumers in Angarsk and the Angarsk urban district was used to analyse the current load of mediumand low-pressure gas supply systems. To check the status of the gas supply system in the region, a theoretical study was undertaken involving analysis, abstraction, and induction. Choosing the methods for reconstruction and modernization of the system required abstraction from the current gas type used in the AUD. Particular attention was drawn to the forecast of gas consumption in the next 10–20 years and possible gasification of the Irkutsk region due to the launch of the main gas pipeline "Power of Siberia". The conducted analysis of the current status of the gas distribution system revealed shortcomings, indicating the need for reconstruction and modernization of network sections, as well as control and regulation units. In addition, the reliability of the operating equipment was checked, considering its service life. The data obtained were used to develop guidelines for reconstructing the existing gas distribution systems and modernizing control units and gas equipment both technically and economically. An increasing volume of gas consumption by the housing stock and the industrial sector compels us to seriously consider the reconstruction of the gas supply system. However, it is essential to develop a gas supply system that accounts for the possibility of transition to natural gas. This factor calls for the project solutions to be compatible with any type of gas fuel.

The aim of the paper is to analyze the results of the determination of forces and motions in a flat slab under static load, obtained considering the physically nonlinear operation of reinforced concrete. The deformation theories used for composite materials were compared. A linear analysis was carried out, along with a nonlinear automated analysis of forces and motions in a slab in the SCAD Office software (version 21.1.9.7) based on various deformation theories. An automatic calc ulation of a slab was conducted in accordance with the guidelines of the SP 52 -103-2007 “Concrete monolithic building structures”, according to which the nonlinear operation of reinforced concrete structural elements should be considered by introducing reducing coefficients. A comparative analysis of the obtained forces and motions in a flat reinforced concrete slab was carried out. An inconsistency was found between the values calculated based on the theory of physical nonlinearity and 

those calculated according to the recommendations of SP 52-103-2007. In comparison with the nonlinear analysis based on SP 52-103-2007, the maximum error comprised 55.8%. The obtained values of motions, according to the recommendations of SP 52-103-2007, were also inconsistent. The largest discrepancy in the results of the nonlinear analysis was 49.4%, while the largest discrepancy in the linear analysis was 69%. Thus, the study showed inconsistency between the results obtained using the guidelines and the results of linear and non-linear analysis. The difference in the results demands additional verification when using non-linear analysis in calculations for strength and stiffness as a means of clarifying the stress-strain state of the studied structure.

This article is aimed at verifying a methodology for defining the load capacity of adriven hanging pile, which is part of a foundation laid on a real construction site after conducting engineering and geological surveys. The results of an automated analysis of the pile load capacity implemented in 2 software complexes (SC) – a) "Zapros" software (version 21.1.9.7), which is a part of SCAD Office software and b) with a subsystem "Statika" – a part of the complex planning system Ing+ were compared. Further, we performed a calculation analysis according to the SP 24.13330.2012 "Pile Foundations. The updated Version of SNiP 2.02.03-85", where the load capacity of a driven hanging pile is calculated as a sum of the resistivity of the foundation ground under the low part of the pile and the ground on its side surface. A comparative analysis of the obtained results established that the value calculated in SC Statika, namely in module Statika ground –concrete piles, is lower than that obtained by manual analysis according to SP (the spread is 2.19%). At the same time, the result obtained with the Zapros software produces an error higher than the normative value by 13.55%. Thus, the study has shown inconsistency in the results obtained using normative requirements and automated analysis. It can be concluded that the use of software complexes does not guarantee an entirely reliable result, thus not abrogating the responsibility of the planner and requiring additional verification.

Due to the uneven distribution of water resources across the territory of Russia, many settlements and even cities do not have own sources of water supply and reservoirs, where treated wastewater could be discharged. To solve this problem, group and district water supply and sewerage systems are designed, built, and developed, hundreds and even thousands of kilometers long. The construction and operation of such facilities require significant financial investments every year. Therefore, the issues of the choice of routes, the structure of facilities, and particularly the methods of transporting water and wastewater, justifying the locations of water intakes and treatment facilities are relevant and require special attention and development of a comprehensive methodology for optimizing the structure and parameters of water supply and sewerage systems. The paper proposes, on the basis of a previously constructed redundant graph, the method of contour minimization of the structure of facilities and ways of supplying water to end users, transporting wastewater to treatment plants by pipelines and trucks. The redundant graph includes all kinds of connections (edges, arcs) that simulate pipelines and trucks, between vertices that simulate existing and new sources of water and wastewater discharges, sewage treatment plants, pumping stations, control tanks, and end users. The method selects the best (from the point of view of minimal life cycle costs) edges, arcs, and vertices of the graph and determines the corresponding parameters of pipeline and road sections of the network and facilities. This method is based on the procedure of traversing the contours and sequentially replacing the branches of the tree with moves, while the best option is remembered in the form of a spanning tree. Based on the results of the performed numerical experiments, it was shown that the use of combined (pipeline and truck) systems for transporting water in terms of life cycle costs is optimal.

The purpose of the paper is to study the condition of the Baikal region road network. Statistical data on the development level of road networks, as well as the regulatory and technical legal documents governing the road industry in Russia and in the Baikal Region, we reanalysed. Firstly, the Baikal Region, as well as the Russian Federation as a whole, lags far behind most developed countries in terms of the development of road networks. Secondly, the road network in the Baikal Region has a very low density in the northern parts and a relatively high density in the southern parts, which are more developed and populated. Thirdly, the actual condition of the roads significantly differs from the regulatory and engineering requirements. Fourthly, the final cost of the product is twice as high as in developed countries. This is due to the low level of quality and development of the road network, as well as the high transport expenses. Moreover, the low quality of the roads has a direct impact on the number of accidents. It can be concluded that an effective mechanism for the modernization of the road industry in the Baikal region has not been developed. The existing regulatory framework and the deadlines set by various development programs do not accomplish the development indicators of regional and local road networks. It is essential that approaches to road capital repair and maintenance of regional and local roads should be modified. A repair of a whole stretch of a road should replace the traditional approach of repairing individual small sections of a road and its structures. To this end, theoretical and methodological provisions and practical guidelines for developing road networks in the Baikal region should be established.

Today, the problems of the ecological state of the environment are acutely felt by all living organisms. The scale and nature of environmental pollution are directly related to the types of production, the amount and quality of emissions, the level of technologies and treatment plants used, the geographical location, the nature of dispersion of pollution and its impact on landscapes, ecosystems, and their components in the urban environment. The need to improve the state of the environment makes the research in the field of integrated assessment of the state of the ecosystem and its components relevant. The study of this area through the prism of integrated assessment provides an opportunity to visually assess the ecological situation of all components of the ecosystem. This will make it possible to objectively look at the investigated area (territory), identify the main influencing factors of pollution, which will narrow the search for the reasons for an underestimation of some territory and give appropriate recommendations for improving the situation. The purpose of this research is to investigate and assess the ecological situation of one of the micro districts (Kirovsky district of the Perm city) on the basis of the proposed method of a comprehensive assessment of the ecological component of the environment. With the help of this method, a step-by-step assessment of each component of the environment was made, i.e., of the substances which, according to the authors, are quite strong factors affecting the environment, in which the pollution was produced. Next, a general assessment of the environment was conducted based on the assessments of substances, as a result, enabling a comprehensive assessment of the entire environment as a general assessment of the entire environmental situation in the form of a convolution tree with assigned development matrices. Based on the results obtained, a conclusion was made on the possible reasons for the decrease or increase in the assessment of the territory.

The goal is the formation of conceptual foundations for creating an environmentally safe system for handling the valuable resource component of waste with the organization of subsequent recycling in economic circulation (a case study of construction and utility facilities as the main lifesupporting structures of municipalities). The research methodology was based on the use of a set of diverse research methods, factor and expert analysis, prior ranking, SWIFT and PEST analysis, generalization, analogy, classification, and composition. The results of the authors’ research in creating concepts and strategies in the field of waste management and secondary resources are presented. In the process of system analysis of waste management, the dominant factors and ways to enhance its efficiency, resource-saving focus, and environmental safety have been identified. The results obtained indicate the possibility of establishing an effective system for involving the resource component of construction and municipal waste into the economic cycle. The groups of factors, restrictions, scenario conditions, contributing to a successful creation and long-term development of a system of handling secondary resources in the considered industries and sectors of the economy, threats and risks in the process of its formation and functioning were identified; a set of scientific and methodological approaches to their system analysis was presented. The paper proposes the main conceptual directions and tools for the creation and development of a system for handling secondary resources formed as a result of waste-generating activities of construction and utility facilities of the urban economy of municipalities, which provide a solution to the problems of environmental safety of the regions.

The aim was to test the developed methodology for assessing and improving the operational reliability of the water supply and distribution system and computer software for assessing the reliability of water supply to end users using an example of the water supply system in the Irkutsk-II microdistrict. The research methodology consists in compilation of probabilistic water withdrawal by end users, compilation of a mathematical model of probabilistic flow distribution, formation of key indicators of reliability of end users provision, description of the implementation of the methodology. Based on the results of processing statistical data on water withdrawals and accidents at the sections of water supply networks of the Irkutsk-II microdistrict for previous years, using electronic models of the developed computer software, the functioning of the water supply and distribution system of the microdistrict was simulated in various operating modes. The assessment of the reliability of supplying end users with water was carried out, key indicators of the quality of providing them with a calculated and reduced level for each end user (node) of the calculation scheme were formed, sections of the network that most negatively affect the quality of feeding end users were identified, measures were proposed to optimize the operation of the system, and their impact was evaluated. The advantage of probabilistic modeling, which corresponds to the adequacy of the real processes of the system’s functioning, is the possibility of developing more precise rules for controlling the water supply and distribution system. The paper shows the effectiveness of the developed methodology and software, which, in turn, allow evaluating the performance, reliability, and controllability of the system. The developed calculation method and software is a modern and effective tool for solving many operational and design tasks for the maintenance and development of water supply systems.

The aim was to study thermodynamic processes taking place in a concrete mixture hardening in winter conditions. Laboratory studies show that different ways of concrete paving affect the quality of the work performed. To study thermodynamic processes, a stand was used that controlled the temperature fields in different places of the volume height of the concrete product and heating elements with a positive coefficient of thermal resistance. The results of the distribution of temperature fields across different places of the volume height of the concrete mixture were analysed, depending on the different methods of concrete paving used. The studies have shown the need to tentatively warm up the base of constructions to reduce the time of concrete mixture hardening, and additionally to warm up the mixture when paving essential structures. The experiments have shown that using heating elements with a positive coefficient of resistance during concrete works helps to provide the necessary quality of repair and construction work in low-temperature conditions.

The aim of this paper was to identify the main directions in the development of architectural environment for children with disabilities and to determine the possibility of implementing a barrier-free environment in the educational and recreation space. Statistical data on the number of children with disabilities can serve as a basis for justifying the introduction of inclusive camp shiftsand special architectural and landscape solutions for the joint recreation of healthy children and those with disabilities. The criteria for creating comfortable conditions for children with disabilities were identified on the basis of an analysis of psychological features and developmental delays of various nosological groups. Within this approach, psychological triggers play an important role, the compatibility of which will be studied in future research.Synergy is the main principle and method for implementing specific architectural concepts, from the standpoint of which any architectural space can be considered as an ever-changing system, similar to the behaviour of a living organism. The features and criteria of the environment for children with disabilities have made it possible to compile a list with a brief description of the arrangement of architectural spaces. Taking into account social factors, options for a comfortable accommodation of children in the rooms for sleeping and recreation in an the inclusive camp were proposed. The demand in the Irkutsk region for recreation facilities for children with disabilities was studied. On this basis, the possibility of combining zones for children with different types of disabilities in the same space was established. In addition, the prospects for joint recreation of healthy children and children with disabilities were revealed. When designing inclusive camps, the methods and principles of space organization described in the article can be used.

The article considers the time period associated with the government reforms and the codification of legal rules in the first half of the 19th century. The purpose of the work is to identify the performance of a new form of legal acts called the Code of Laws. The influence of this document on the supervision of construction at various levels of government is considered. The basis of the research is a study of the documents presented in the Code of Laws published in 1832 and 1842. In the first half of the 19th century, these documents became the main legislative acts in the design, control and construction of all types of buildings, as well as in related areas of construction and planning. The conducted research revealed that the reforms of the second half of the 19th century changed the state control policy in the field of civil construction, at the same time as contributing to the improvement of regulatory documents on the development of territories, management of architectural and construction complexes, regulation of architectural and construction activities, development of urban economy, transport, industry, etc. At that time, architectural and construction activities, having been traditionally kept under close surveillance of the state authorities, acquired not only a central government body, but also to a set of legislative documents specified in the Code of Laws. This Code became a legal framework for architectural and construction activities at all levels of government and all types of property. The introduction of new forms of management of architectural and construction complexes, as well as the integration of legal documents, since the middle of the 18th century, created the foundation for the effective work of the vertical integration in terms of management, regulation, control, implementation of construction activities, supervision of construction, etc. Simultaneously, this contributed to the growth of the necessary buildings of state and public (city) property.

The purpose of the work is to study the features and typology of monuments of traditional folk wooden architecture in settlements on the shores of Lake Baikal, located in the western part of the lake on Olkhon Island. The study of the folk wooden architectural heritage in the coastal settlements was carried out in preparation for the development of the “Standard for the planning and development of the Baikal settlements”. Based on collected historical descriptions and materials of two historical and architectural surveys by specialists of the Irkutsk State Technical University at the end of the 20th century, an overview of the main characteristics and features of the traditional dwellings of Russian peasants and Buryat families who led a semi-nomadic lifestyle has been made. As a result of the work, the most ancient space-planning types of Russian folk dwellings in settlements on the Olkhon coast of Lake Baikal were identified. The descriptions of the three most common types of traditional Russian dwellings in this area were made –klet houses, link-up houses, and five-walled houses. Information about the rapid change in the traditional Buryat dwelling is presented: the transition from felt yurts to wooden yurts, and then to a winter Buryat dwelling of the Russian type. The importance of summer migrations and, accordingly, summer settlements –letniks– in the organization of pasture cattle breeding, land use, and preservation of the semi-nomadic way of life of the Buryats was revealed. It is concluded that the main types of folk dwellings in the settlements of the Olkhon coast changed during the 18th-19th centuries. The development of the forms of the Buryat folk dwelling proceeded most intensively. The evolution of the forms of traditional dwelling of both Russian peasants and Buryat families in the settlements of the Olkhonsky coast of Lake Baikal was part of the general process of the development of traditional folk dwellings throughout the Upper Angara region, including the Balagan steppe and the traditional settlements of the Upper Lena.

The aim of this study wasa reconstruction of the park zone of Lake Molodezhnoe in Usolye-Sibirskoye city. The methods of landscape reconstruction were used, along withstylistic solutions with compositional design techniques of landscape architecture. The paper presents some materials on the improvement of an urban territory. As part of the process of reconstruction and improvement of the park zone of Lake Molodezhnoye, a special place is occupied by its landscaping. It symbolizes modern environmental trends, which testify to the desire of people to take care of their health. The authors of the project paid special attention to changing the territory towards landscaping and improving park areas. In the study, zoning was prepared, as well as design territories were identified: places for recreation and for sports and cultural events. In the course of creating a project for the reconstruction of the park zone, measures were developed to improve the entire territory of the park, including the preparation of entertainment facilities, playgrounds for children, as well as the design of a pedestrian network. An overview of the park territory was also conducted on the basis of a visual study of the state of the Lake Molodezhnoyeshore in Usolye-Sibirskoye. The result of the research was the developments, which presented a project plan, taking into account the best use of natural conditions for organizing public recreation and carrying out a variety of cultural, educational, physical, and health-improving work among adults and children.

The purpose of this research is to study the theoretical and methodological aspects of the development of design in urban areas in the context of the implementation of tools for the translation of specific vocabulary of shaping for the local cultural tradition. The research methods comprise the development of local strategies and tactics for the formation of the architectural and compositional identity of the urban environment, which are practically poorly studied, while the problems of the uniqueness of development of the urban areas are a priority in modern urbanism. Particular attention is paid to the problems of the formation, preservation, and development of the urban environment design, as well as solving the problems of the native arrangement of modern urbanized spaces. Solving these problems allows optimizing the choice of generated options, which is especially important in the process of designing urbanized areas. The aspects of the urban identity of the historical environment of the cultural and social center of a Siberian settlement presented in the paper make it possible to operate with various types of dimensional quantities, from the formation of a spectrum of parameters to their comparative assessment, and as a result, a system of criteria for the compliance of the initial situation of the composition with a given benchmark. The results of the study confirmed the existing theoretical positions, thereby proving the effectiveness of the study.

The defensive architecture of Siberia in the 17th-18th centuries is one of the important sections of the Russian architectural heritage, significant for the history of regional architecture during the period when Siberia and, in particular, Eastern Siberia, became part of Russia. The purpose of the study is to preliminarily and proportionally find the traces, images of the architectural appearance of the Irkutsk wooden Kremlin in the silhouette of the historical core of the city. The study uses the methods of planning analysis, analogs, an integrated approach with control points-markers, spatial units of information about the lost object. The authors studied graphic and text documents that give a general idea of the perimeter of the fortress and internal buildings, as well as historical sources about the Irkutsk Kremlin, from which the parameters of fortifications and amenities were taken and correlated with analogs. The main results were the identification of the location of the Irkutsk wooden Kremlin on a modern map of the city and a preliminary graphic and model reconstruction of the architectural appearance of the fortification. The historical and architectural fact of the uniqueness of the place of the lost object is also highlighted. Thus, the authors reveal the importance of the Kremlin as one of the main architectural and urban planning components of space organization in Irkutsk in the 17th-18th centuries. The results of this study can be used to organize archaeological research, restoration activities, etc. Based on the research carried out, further studies are planned using updated and new data.