This article aims to analyze modern energy-efficient technologies used in the architecture and construction of "healthy" office buildings, their impact on reducing the carbon footprint and operating costs, and key aspects such as the use of renewable energy sources, energy-efficient building materials, and smart control systems.

Keywords: construction, architecture, "healthy" office buildings, energy-efficient technologies, renewable energy sources, energy-efficient building materials, and smart control systems

The article presents a review of contemporary Russian and international studies devoted to the barriers hindering the implementation of circular economy principles in the construction industry. It examines economic, regulatory, technological, and socio-cultural constraints that impede the transition from a linear to a circular production model. The analysis of recent publications identifies key challenges, highlights the interrelation of barriers, and emphasizes the importance of an integrated approach to overcoming them. Based on the synthesis of the reviewed sources, it is concluded that a successful transition to a circular model requires systemic changes in legislation, financing, technology, and public awareness.

Keywords: circular construction, circular economy, barriers, economic constraints, regulatory framework, secondary raw materials, technological innovation, institutional barriers, environmental education, sustainable development, recycling

This article examines the potential of modern lighting technologies to address the need to select energy-efficient lighting equipment for outdoor urban portable pavilions. The article analyzes the technical characteristics of the main types of modern lighting systems based on LED and OLED technologies.

Keywords: artificial lighting, energy saving, LED systems, OLED systems, hybrid systems, energy efficiency, autonomous structures, lighting technologies

Against the backdrop of tightening requirements to reduce production costs and the cost of construction products, a technical solution for insulating building structures is proposed. This article analyzes literary sources, both fundamental and modern, covering issues of thermal protection of buildings; factors influencing the payback period of investment energy-saving construction projects; and examples of economic evaluation of energy-saving measures. Heat loss through the roof structure under consideration was calculated. Heat loss graphs were constructed for various «roof – window» combinations. Insulation options were identified, based on regulatory requirements and the criteria for minimizing the amount of work. An economic analysis of the selected options was conducted.

Keywords: heat loss, utility function of thermal insulation, indifference curves, budget equation

One of the ways to reduce the construction time of nuclear power plants is to use prefabricated monolithic construction technology with the use of prefabricated formwork blocks consisting of a reinforcement frame and sheets of non-removable formwork made of high-strength steel fiber concrete. After installation in the design position, the prefabricated elements are filled with self-compacting concrete mixture, significantly reducing labor costs on the construction site. Self-compacting concrete mixtures are characterized by high mobility and a significant content of cement paste, which increases the requirements for ensuring the tightness of the formwork system. The article describes the results of experimental studies on the parameters of filling the technological gaps between the sheets of non-removable formwork with self-compacting concrete mixture at different heights of its placement. The article also provides a description of a laboratory setup that allows for the simulation of the pressure of freshly placed concrete.

Keywords: nuclear power plant, permanent formwork, structural testing, steel fiber reinforced concrete, self-compacting concrete mix, formwork pressure

The article considers the problems of using construction materials of improper quality in Russia. The concepts of sub-standard, fraudulent and counterfeit construction materials (SFC materials) are defined. The distinctive features of SFC products in the construction materials market and the consequences of non-compliance with general requirements for their quality are highlighted. Features of digital marking of construction materials in Russia are analyzed. Key problems of incoming inspection made by the contractor and their causes are highlighted. In conclusion, recommendations are given to improve the efficiency of the incoming inspection system for construction materials.

Keywords: construction materials, quality, fraudulent products, counterfeit products, labeling, safety of buildings and structures, construction control, incoming inspection

The article presents the experience and technology of arranging floors of industrial buildings based on cement mortar containing modified basalt microfiber. Structural solution of floor with coating modified with basalt microfiber is given. Technological operations performed at the facility are indicated. Invention proposes a modified solution mixture composition characterised by improved physical and mechanical characteristics. Prior mechanical separation of the microfibers in suspension with water and plasticizer has been found to promote more uniform distribution of the fibers throughout the solution mixture.The scheme of organization of the workplace when laying fiber reinforced cement mortar mixture in the floor covering structure is presented. It has been found that by introducing modified basalt microfibers into the cement mixture, shrinkage strains of the mortar are reduced, which contributes to increasing the crack resistance of the cement coating. Physical and mechanical characteristics of the modified coating are determined, such as abrasion, compressive strength and bending tensile strength. Improved physical and mechanical characteristics of the modified cement mortar were noted, which makes it possible to use the developed compositions and technology when arranging floors in buildings with increased mechanical effects.

Keywords: monolithic coating, device technology, dispersed reinforcement, concrete, modified basalt microfiber, fiber reinforced coating, mortar mix, floors of industrial buildings

The invention related to the field of construction is proposed, which can be used for trenchless linear laying of oil, gas and other pipelines under natural and artificial obstacles, linear and extended structures (highways, railroads, etc.) located, including in monolithic rocky soils with simultaneous formation of a case, development and arrangement of a pre-drilled well.

Keywords: pilot well, diamond wire rope, foundation pit, encasement, working body, circular sector

The relevance of the research is driven by the critical state of a significant portion of the historical building stock in Russia, where interfloor slabs are the most vulnerable elements. The problem lies in the need to replace them with structures that meet modern standards for load-bearing capacity and fire safety, without increasing the load on the weakened foundations and walls.

Keywords: reconstruction, cultural heritage site, monolithic floor slab, void former, lightweight structure, load-bearing capacity, work procedure statement

The article presents the experience of a pilot project on the integration of calendar-network planning, BIM-modeling and virtual reality technology for the management of a construction organization. For this purpose, a sequence of steps for integrating technologies is presented and a combination of technologies is performed on the basis of a single digital platform; fragments of the developed calendar-network schedule and BIM model and the results of their combined display in VR glasses are presented.

Keywords: calendar-network planning, calendar-network schedule, BIM-modeling, virtual reality technology, VR-glasses, unified digital platform, TrinusVR

This article evaluates various methods for determining the technical condition of structures, buildings and structures. To date, probabilistic (statistical) methods are considered to be one of the possible options for determining the degree of destruction of building structures. The advantage of these methods is the ability to comprehensively take into account the parameters present in a variety of material nature. This is due to the possibility of describing them in dimensionless quantities. The purpose of the method under consideration is to formulate a certain number of technical conditions (events) through which it is planned to determine the degree of destruction and find a set of technical conditions of building structures. Diagnostic matrices are created by combining diagnostic features and their conditional probabilities, acquired by analyzing a large amount of accumulated statistical data.

Keywords: construction and technical expertise, defects, reliability, diagnostic methods, efficiency

This article analyzes the specifics of applying certain circular economy principles in the construction industry. It examines the generation and management of construction waste. The main sources and types of construction waste are identified, including their classification by hazard level. It is determined that, due to its scale and the diversity of materials consumed, the construction industry has the greatest potential for waste utilization.

Keywords: construction industry; сlosed-loop economy; construction waste, waste recycling, waste disposal; circular economy

The article discusses some methods for the construction of long-span coverings from precast reinforced concrete elements and prefabricated steel structures. To systematize these design and technological solutions and determine the effectiveness of their application based on the parameters of manufacturability, a comparative analysis was carried out. The construction technologies were compared according to the following parameters: specific and total labor intensity, the level of mechanization, the total number of elements, the average and maximum mass of one element, the total mass of the mounted elements, and the equilibrium coefficient.  The analysis showed that for reinforced concrete structures, installation in blocks is most effective, involving preliminary enlargement at ground level, followed by lifting and installation in the design position. Precast reinforced concrete shells have a higher level of mechanization and a degree of equilibrium, which makes it possible to use crane equipment efficiently, but due to their considerable weight, they require the use of supporting structures and high-load cranes. The installation of prefabricated steel structures in its entirety with preliminary enlargement at ground level is the least laborious, but the need to install a large number of low-mass piece elements reduces manufacturability.

Keywords: installation of long-span structures, installation of triple-layer rotational shells of double curvature, installation of steel beam structures, installation of a spatial structural roof unit, installation of the entire roof structure as a single unit

This article presents a methodology for designing passive degassing systems for the reclamation of unauthorized solid municipal waste  landfills using BIM technologies. The study addresses the challenge of heterogeneous terrain in landfill bodies and aims to optimize the design process. The proposed approach integrates digital terrain modeling to account for uneven relief, enhancing the accuracy and efficiency of degassing system calculations.

The research begins with an analysis of the current state of waste management in Russia, highlighting the predominance of landfilling as the primary disposal method. The authors emphasize the environmental risks associated with landfill gas emissions, particularly methane, and the need for effective degassing solutions. Traditional methods often overlook terrain heterogeneity, leading to suboptimal system performance.
The methodology involves six key stages: (1) creating a digital terrain model using Autodesk Civil 3D, (2) restructuring the landfill body to meet regulatory standards, (3) calculating waste volumes, (4) estimating gas generation rates based on morphological waste composition, (5) placing degassing wells according to terrain-specific criteria, and (6) evaluating system efficiency. The study compares the proposed method with traditional approaches, demonstrating a 21% cost reduction and a 14.27% improvement in biogas extraction efficiency.
The results underscore the economic and environmental benefits of the new methodology, which leverages BIM technologies to optimize degassing system design. The authors recommend further research to account for vertical gas generation variability and regulatory constraints on emissions. This study contributes to the development of sustainable landfill reclamation practices, aligning with modern environmental standards.

Keywords: reclamation, landfill gas, passive degassing, BIM technologies, solid municipal waste, calculation methodology, ecology, biogas, unauthorized landfills, optimization

The article provides a justification for the concept of a folding system for a prefabricated residential module based on wooden structures. An analysis of foreign analogues of prefabricated transformable wooden buildings and an assessment of the possibility of their use in northern climatic conditions has been performed. A transformation system for a prefabricated wooden module for use in northern and Arctic conditions is proposed and substantiated.

Keywords: low-rise housing construction, transformation, transformation of low-rise residential buildings, prefabricated transformable buildings, pre-manufactured at the factory, high degree of factory readiness

Cities prone to natural disasters face the problem of accumulating large volumes of construction waste, which is heavy and poses a source of environmental pollution and a risk to human health. This is especially true for countries in the Middle East, such as Iraq and Syria, which have suffered heavy damage as a result of conflicts and natural disasters. The presence of this waste affects the emergency response process, including the access of emergency services to the affected area and the inability to search for and save lives, and poor management of this waste leads to a negative impact on the cost and time of the recovery process. On the other hand, this waste also offers new opportunities: it can contain valuable materials such as concrete and steel, which can be either a source of income or a source of reconstruction materials, and reduce the consumption of natural resources through reuse and recycling. The aim of this study is to analyze the reconstruction process, including construction waste management, and identify the problems and obstacles that prevent local authorities from effectively implementing their reconstruction plans, as well as to present solutions to combat the huge amount of construction waste that has accumulated over the years.

Keywords: Inspection of structural elements, reinforced concrete, defects of monolithic structures, cracks, reinforcement corrosion, repair, concrete quality, cold joint, monolithic construction, concrete surface quality

The purpose of this study is to develop a new approach to determining the causes of deformation cracks in brick walls and light concrete blocks, which will increase the accuracy of expert research in case of disputes. In the process of theoretical research, methods of analysis and the results of field observations were used. The results of this study include a proposal to use the concept of "damage formation mechanism", which represents the relationship between the damaging factor as a consequence and the cause of its occurrence, which preceded the consequence. The classification of deformation cracks has been updated. The results of the study are of practical importance for specialists in the field of inspection of buildings and structures to determine the cause-effect relationship of the formation of deformation cracks. The expanded classification of deformation cracks has theoretical significance, since it complements the existing concepts of damage.

Keywords: cracks, deformation cracks, types of cracks, classification of cracks, causal relationship, damaging factor, mechanism of damage formation

As a result of changes in regulatory documents on acceptance of residential premises, there is a need to develop illustrative methodological materials that would allow the future owner to independently, i.e. without the involvement of an external qualified specialist, to perform the acceptance of the apartment, pointing out to the representative of the developer involved in the acceptance of significant construction defects. The purpose of the study is to determine the structure of construction defects in residential premises and to identify the most common defects in this structure, which will allow the future owner to independently perform the acceptance of the apartment. In the article, based on the analysis of a significant number of claims from apartment owners to the builder and the results of the authors' research in the scope of forensic examinations and pre-trial construction-technical investigations, the structure of construction defects, which are massively identified in the process of acceptance of apartments, is defined and presented. The groups of defects that are most frequently encountered in practice are presented. To ensure the clarity of practical use of the obtained analytical materials, a list of mass construction defects identified in the process of acceptance of residential premises, indicating their category necessary for making a decision on the mandatory elimination of defects is defined.

Keywords: acceptance of apartments, construction defects, structure, defect groups, construction defect, substantial defect, non-substantial defect, building and technical expertise, translucent construction, engineering networks, finishing of premises

During the restoration of buildings in the construction industry, mechanized waste removal from work areas and construction sites is often neglected. This poses a safety risk to both people and the environment due to high levels of dust in the air. Dozens of new buildings appear in modern megacities every year. This trend has its pitfalls. In particular, the increasing number of construction sites makes the problem of construction waste removal particularly pressing. Currently, two methods are primarily used to remove construction waste from construction sites: throwing waste out of windows and lowering waste down stairs or scaffolding. The advantage of the first option is the quick solution. However, throwing waste out of windows raises environmental and safety concerns. The second method is considered safer, but it requires significant physical effort. Therefore, a construction waste chute is currently the most effective solution to this problem.

Keywords: technosphere safety, safety management, construction waste, environmental pollution, monitoring

The article examines methods of surface stabilization of loess slopes subject to erosion and landslides. The authors consider the use of soil concrete based on slag-alkaline binder using local loess as a filler. Experiments were conducted with various binder compositions, including liquid glass with different modules and sodium hydroxide, which made it possible to determine the optimal parameters for achieving high strength and frost resistance. For decorative purposes, the use of natural pigments, such as siderites, providing color stability, is proposed. The practical part of the work includes a description of the technology of pneumatic spraying of soil concrete to create monolithic lattice structures.

Keywords: loess slopes, soil concrete, slag-alkali binder, liquid glass, frost resistance, pneumatic spraying, decorative pigments

This article highlights the use of tethered balloons in the construction of high-rise buildings, where the use of cranes or helicopters is not always advisable due to the technological features of the structures being built, or for economic reasons. The design scheme of a balloon system capable of mounting high-rise structures, in particular industrial chimneys, is described. Examples of the installation of high-rise pipe structures are given. The basis of theoretical approaches is given to determine the characteristics of the shell as the main component of cargo balloon carriers. A method for determining the volume of a balloon is given, as an important element in the balloon shell design.

Keywords: balloon crane, construction of high-rise facilities, high-rise installation, balloon system, equation of equilibrium of a balloon crane.

The article explores a model in which it is possible to predict the timing of obsolescence of a construction site. The purpose of the described techniques is to ensure stable operation and reliable operation of facilities. The presented methodological approaches make it possible to improve the accuracy of the assessment of degradation processes, covering both technical elements and structural parts of buildings and infrastructure systems. The article focuses on effective tools and methods used to survey the current state of real estate, as well as to anticipate changes in their performance over time. The paper considers the application of a generalized computational wear scheme that demonstrates changes in the organization and destruction of building elements throughout the service life. This scheme takes into account the continuous influence of external conditions on the structure of the structure. The universal formula proposed for the analysis serves as a research tool and displays the course of changes in the state of technical systems under the influence of prolonged loads.

Keywords: organizational and technological solutions, reliability, quality control, monitoring of compliance with standards, efficiency, production costs

The article considers the issues of increasing road safety in urban development in winter. The causes of snow and ice deposits and their impact on the comfort and safety of traffic, including pedestrians, are considered. A review of modern snow melting and road surface heating systems is provided, with the most effective examples of road surface heating projects being given. A comparative analysis and assessment of the effectiveness of road surface heating systems is performed, using a 1000 m2 car park as an example. Recommendations are given for the use of road surface heating systems.

Keywords: highways, hydrothermal systems, electrical systems, road surface heating

The article considers issues related to the development of the territories of the Far North and the Arctic, namely, issues of ensuring transport accessibility of the northern regions. The issues of relevance and demand for the construction of winter roads and ice crossings are considered. The features of the construction and operation of winter roads are studied. The main methods of strengthening and extending the service life of winter roads are considered and analyzed. Options for strengthening winter roads and ice crossings with geosynthetic materials are proposed and substantiated. Recommendations are given to reduce the environmental impact of measures to strengthen winter roads on the environment.

Keywords: winter roads, ice crossings, ice coverings, strengthening, reinforcement

Polymer composite materials have been widely used in the construction industry. Currently, these materials are used to restore the operability of buildings and structures, regardless of their functional purpose. To date, the production process is carried out manually and in this regard, there is a need to develop tooling and organizational and technological methods to strengthen structures with polymer-composite materials that increase labor productivity. Due to the insufficient amount of research in this area, the regulatory documentation regulating the procedure for performing quality control of construction and installation works at all stages of restoration of building structures with polymer-composite materials is very limited. In this article, typical solutions for strengthening building structures are considered, various types of polymer-composite materials used in reinforcement are indicated, and the structure of the reinforcement process is described. In addition, an assessment of the time spent in the production of work manually and using small-scale mechanization with the use of additional equipment was carried out. It should also be noted that based on the study of domestic and foreign experience, issues requiring a systematic approach to their solution have been identified. The development and improvement of the regulatory framework, organizational and technological solutions will ensure the further development and application of composite materials in the construction industry.

Keywords: reinforced concrete structures, reinforcement, composite materials, technological solutions, entrance control, operational control, acceptance control