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

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

In the process of civil engineering, the role of the technical client is extremely important, since it is he who ensures control and coordination of all stages of construction, from the development of project documentation to commissioning of the facility. However, despite the importance of this role, technical client activities often face problems associated with ineffective management, high costs, schedule delays and quality deficiencies. Optimizing its activities can significantly increase the efficiency of the project and reduce risks. This article provides an analysis of possible ways to optimize the work of a technical client. Considered methods using modern software, training and improving the abilities of personnel, Total Quality Management and Lean Construction.

Keywords: technical client, project efficiency, civil engineering process management, lean construction

The article provides a comprehensive analysis of defects in monolithic reinforced concrete structures, commonly encountered during the construction of multi-storey buildings. The main types of defects and damage are discussed, such as cracks, concrete spalling, destruction of the protective layer, exposure and corrosion of reinforcement bars, formation of cavities, concrete overflow, gravelly texture, geometric deviations, and cold joints in concreting. Their general description, causes of occurrence, classifications, parameters, and consequences for the operational characteristics of the structures are presented. Special attention is given to modern diagnostic methods and repair technologies, which significantly extend the service life of buildings and enhance their safety throughout their lifecycle. The results presented can be used by engineers, builders, and repair specialists to optimize construction processes, control the quality of work, and ensure the timely elimination of identified defects.

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

A project is a single system, an interconnected network of elements: participants, resources, processes, and goals. This relationship is critically important for successful implementation by the technical customer service. Processes that are clearly defined and managed ensure consistency and efficiency. Therefore, project design and management requires a systematic approach that takes into account all relationships and strives to optimize each element to achieve a common goal. A system approach is a method that considers a problem or task in terms of its interrelationships and interactions of all elements of the system. In the context of a technical customer service, this approach can be particularly useful for project management, process optimization, and work efficiency improvement.

Keywords: construction project, technical customer, planning, technologies, risks, system approach, project management, documentation of processes, construction site, system

The article examines the optimization of processes for receiving and transferring design and working documentation in contracting construction organizations using Building Information Modeling (BIM) technologies. The current state of document management in construction is analyzed, and problem areas of traditional approaches are identified. A concept for implementing BIM in document management processes is proposed, along with an algorithm for documentation transfer and regulations for interaction between construction process participants. The results of testing the developed solutions on a pilot project are presented, confirming their effectiveness. Promising directions for further research in this field are determined.

Keywords: building information modeling, design documentation, working documentation, construction production, common data environment

The article considers the types of risks in the implementation of an investment and construction project. The dependence of the duration of work on the resources spent on their implementation is derived. As a result of the study, it was found that for planning and risk control it is necessary to interconnect all possible types of risks; to exclude their occurrence during the implementation of the project, careful preparation and development of project documentation is necessary, including the adoption of organizational and technological solutions for the production of work. It is also important to draw up a competent calendar planning, where the time of work for each team on each private front of the facility is necessarily calculated and justified, taking into account the existing captures, plots. With an increase in the duration of the critical path (critical paths), it is necessary to optimize the flow of maximum duration with a possible change in the organization of work.

Keywords: risks in construction planning, risk control, investment and construction project, organizational risk, organizational and technological solutions

Monolithic reinforced concrete structures are widely used in construction practice. When concreting massive structures, technological and organizational difficulties may arise in ensuring the continuity of the concrete mix, which leads to the need to organize working joints. Studies conducted earlier show a decrease in strength characteristics in this area and the bearing capacity of the entire structure. Known and practical solutions to the problem cause additional labor, material and time costs. In this paper, we propose a method for installing a technological seam caused by unplanned interruptions in concreting for technological and organizational reasons, based on previously conducted experimental and pilot studies by the author of this article. The proposed method consists in the fact that, when a break occurs, subsequent concreting is carried out with a break from the previously concreted section, while a stepped profile is formed with the help of fasteners, as a result of which a space is organized bounded by the surface of the first and second concreted sections and a formwork of a shape close to pyramidal, similar to the run-in fines, during the construction of brickwork. After holding the concrete of both sections and dismantling the cut-offs, a concrete mixture of the same class on Portland cement is laid within the free space of the applied slag-alkali solution with the characteristics: slag with a basicity modulus of more than 1.0; an alkaline solution with a hydrogen index level above 12.0. The technological features of performing forced seam concreting according to the proposed method are given.

Keywords: concrete contact zone, technological concreting joint, unplanned concreting working joint, monolithic reinforced concrete structures

This article investigates the application of a digital operational model to enhance the efficiency of maintenance and repair processes for capital construction projects. The study focuses on the operational phase within the building lifecycle, analyzing maintenance procedures and categorizing structural defects. The research identifies limitations in traditional defect reports, which lack quantitative data and spatial referencing to the building structure. These limitations hinder their effectiveness in organizational and technical planning for repair works. The proposed digital model optimizes building condition management, improves the accuracy of technical assessments, and facilitates precise quantification of repair scopes. It also enhances collaboration between facility management and contracting entities. A case study of the educational and laboratory building at the Northern (Arctic) Federal University demonstrates the model's implementation. Key benefits include cost reduction, improved maintenance quality, and streamlined operational workflows. The findings highlight the potential of digital tools to transform building maintenance practices, offering a data-driven approach to facility management in the construction sector.

Keywords: maintenance and repair, operational digital model, defect, defect list, technical condition

The article analyzes the issues related to the implementation of construction control at the facilities of existing enterprises during their reconstruction. The authors conduct the research based on the use of methods of scientific analysis, synthesis, generalization and systematization. The work uses domestic and foreign scientific sources, examines the experience of advanced construction control technologies and their implementation practices. Special attention is paid to the use of digital technologies, such as monitoring systems, automated controls and modern software solutions. The theoretical basis of the research was scientific works on construction control, regulatory legal acts and standards, as well as publications on modern methods and approaches to the reconstruction of enterprises. The empirical part is based on the analysis of real data on construction control at enterprises, including identifying problems and evaluating the effectiveness of applied solutions. As a result of the research, an optimized structure of construction control has been developed, innovative technologies and recommendations for their implementation have been proposed. The effectiveness of the new model has been evaluated, showing its advantage over existing approaches. The theoretical significance lies in an in-depth understanding of modern methods for performing construction control, including the use of digital technologies. The practical significance of this work lies in the potential of applying the proposed solutions to improve the quality of enterprise reconstruction, which in turn contributes to the sustainable development of industry and the reduction of operational risks.

Keywords: construction control, operating company, reconstruction, entrance control, operational control, acceptance control

To ensure the safety of capital construction facilities, it is necessary to anticipate and predict risks at the planning and design stage. Risk forecasting is carried out in both quantitative and qualitative measurement. The accuracy of the calculations requires consideration of a large number of different risks, their causes, possible consequences and the likelihood of their occurrence. At this scale of input, traditional ways of calculating construction risks are costly in terms of money and labour, and can be very time-consuming. Artificial intelligence and machine learning technologies automate the process of risk assessment and calculation. With digital technology, all the factors arising during construction will be taken into account in real time. Despite a number of limitations in the application of this technology, this method is the most promising and increasingly widespread.

Keywords: construction, capital engineering, safety, risk, risk forecasting, risk assessment, risk management, artificial intelligence, machine learning

In this scientific article, the issues of the interrelationships of flow parameters during the process of breaking down the general front of construction work, operations and related processes were considered. The main flow factors that have an impact on the time and duration of work are the number of private fronts (seizures), the time period, and the number of variations in the construction work itself. In this paper, the procedure for establishing the interrelationships of various parameters of molasses was considered in detail. According to the conclusions of the analysis, it was found that, taking into account the fact that the design of the calendar plan does not take into account the time intervals allocated for super-simple activities and operations of upcoming subspecies of construction work, it is necessary to additionally take into account the progression of the intervals of deployment and curtailment of construction work flows (resource complexes, private flows) and frontal complexes. It is also proved that the determination of the interrelationships of the flow parameters is associated with the fragmentation of the type of work into individual processes, and the general front of construction work into private ones, while the duration of the processes from which the schedule of work is formed is the main assessment of the effectiveness of the calendar plan.

Keywords: organizational and technological solutions, reliability, quality control, efficiency, cost, labor productivity

The article analyzes the design features in the conditions of the Far North. Attention is focused on the need to take into account climatic, geographical and socio-economic factors, as well as the use of innovative approaches to ensure economic development. The authors propose compensatory measures aimed at mitigating the negative conditions of the region, contributing to the successful implementation of projects in the Far North, as well as ensuring safety and reducing the duration of construction projects. The study of the most significant compensatory measures and their effective application is conducted.

Keywords: design, Far North, Arctic, regional features, unique factors, climatic conditions, geographical conditions, innovative approaches, development, compensatory measures

The article discusses the problem of the lack of regulatory requirements and methodological recommendations for choosing the type of hinged facade systems, depending on the cladding materials and architectural features of buildings and structures. In the course of the study, modern cladding materials for hinged facade systems were considered and their classification was compiled. The main criteria for choosing a facade system are determined, taking into account various factors such as architectural features and installation technology. The author substantiates the need to develop a methodology for choosing a facade system depending on the architecture of the building and the type of cladding material.

Keywords: hinged facade systems, cladding materials, choice of facade system, building architecture, facade design, modular facade systems, installation of facade systems

The article analyzes approaches to assessing the degree of uniformity in the use of labor resources in the construction sector. The Herfindahl-Hirschman index is proposed as a key tool, which makes it possible to quantify the uniformity of the distribution of labor at various stages of the construction process. The use of this index contributes to more rational planning of labor costs, which helps to reduce downtime, prevent overloading of employees and, as a result, increase the overall efficiency of construction projects.

Keywords: uniformity of labor force use, indicators of uniformity, assessment of uniformity, labor resources, calendar planning

For the effective preservation of cultural heritage sites (CHS), it is necessary to carry out a set of engineering, technical and scientific measures already at the stage of their registration and conservation. Proposed work on the repair, restoration and renovation of CHS is subject to a comprehensive study. The approach to the preservation of CHS should be systemic, including digital volumetric-spatial and planning solutions, technology and organization of repair, restoration and renovation, development of new repair and renovation binders and materials, soils, bases and foundations, calculations of dynamic and seismic impacts, etc. To develop modern repair and renovation binders and compositions, it is necessary to study traditional or so-called handicraft technologies that were used in the old days - in the late period and the Middle Ages. Knowledge of handicraft technologies allows us to develop binders and compositions that are as close as possible to the original (parent) ones. From the point of view of a natural study of handicraft technologies for the production of lime binders, the following are of interest: those found in the Shoan tower complex. Guli, Dzheyrakh district, Republic of Ingushetia, fragments of kilns, the study and research of which is the subject of this article.

Keywords: historical and cultural monuments, cultural heritage sites, handicraft technologies, furnaces, kilns, X-ray phase analysis

Organization of repair and restoration and reconstruction works at cultural heritage sites is based on substantiation of conditions and factors influencing choice of solutions on technology and organization of a set of works, on analysis of methods of development of organizational and technological solutions and modeling of work production schemes, as well as on selection of criteria for evaluation of work organization options and methods of selection of organizational and technological solutions. One of the key stages of preparation for repair, restoration and reconstruction of cultural heritage sites is development of a calendar plan and schedules and network models. They are mandatory in the work production project (WP), determining the terms, order and volumes of work. The work presents forms of calendar schedules and plans, as well as a network model of development of scientific and design documentation on preservation of cultural heritage sites (in general, by stages and local works) and a network model of preparation of repair and restoration and restoration and reconstruction works.

Keywords: historical and cultural monuments, cultural heritage sites, repair, restoration, reconstruction, schedules, calendar plans, network schedules

The problem of energy saving in the construction industry involves the installation of additional thermal insulation of enclosing structures. But the thickness of the exterior wall structure has a limit. After a certain thickness, the monetary cost of insulation will grow more slowly than the amount saved on heating. On the other hand, a large chain of participants in energy-saving investment projects (IEP) leads to a significant payback period. It is proposed to use the technology of internal insulation of external walls with a minimum number of participants in the IEP. The calculation of the economic effect is given. The IEP assessment should be carried out taking into account energy consumption throughout the entire life cycle of the proposed building structure.

Keywords: energy saving, energy efficiency of structures, discount rate, energy service.

The paper considers the choice of the optimal technology for the construction of tongue-and-groove fencing based on the hierarchy analysis method. Decision-making in construction practice requires consideration of many factors, including internal (cost, reliability, speed of work) and external local conditions (risk of interruptions in the supply of materials, the influence of weather conditions, work in cramped conditions). The hierarchy analysis method makes it possible to formalize the decision-making process by structuring the task in the form of a hierarchy and comparing alternatives in pairs. In the course of the study, a comparative analysis of the technologies of hammering, vibration immersion and static indentation of sheet piles was carried out. Priority vectors for each criterion were calculated, and the consistency of the matrices was checked. The final choice of technology is justified based on the integration of internal and external factors. The results obtained allow us to recommend the optimal technology that takes into account the technical and organizational features of the construction process.

Keywords: tongue-and-groove fencing, technology selection, hierarchy analysis method , selection criteria, construction technologies, pairwise comparison, priority vectors

The article considers the sequence and technology of conducting surveying before starting excavation work on a bush site for the oil and gas industry. Surveying works play a key role, ensuring the necessary accuracy and reliability of the development of oil and gas fields. These works include conducting field measurements, detailed terrain analysis, calculating the volume of soil masses involved in the construction of earthworks, as well as monitoring geometric parameters and sand pits. An important stage of surveying is the creation of a detailed topographic map of the territory. Based on this map, it is possible to accurately plan the location of all future structures, ensuring optimal use of space and compliance with all regulatory requirements. The use of modern technologies, such as geodetic GPS systems and BIM technology, can significantly improve the accuracy and efficiency of these works. Special attention is paid to compliance with industrial safety standards, which minimizes costs and risks in the development of oil and gas industry enterprises. Thus, surveying is an integral part of the preparation and implementation of projects in the oil and gas field, contributing to the efficient and safe performance of all necessary work.

Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production

This article discusses effective ways and means for analyzing the condition of real estate objects, as well as predicting changes in their operational properties over time. These approaches open up prospects for improving the accuracy of predictions of wear patterns of both physical and functional components, as well as the aging of building structures, structures and engineering systems. Ultimately, this helps to maintain the proper level of their work and ensure high-quality functioning. Considerable attention is also paid to the general kinetic theory of structural wear of construction facilities, as it is known that this theory makes it possible to assess the corresponding reliability risks with fairly high accuracy, depending on the service life of the building structures of the facility. As a research tool, it is proposed to use a universal mathematical model of wear, which illustrates the dynamics of the processes of structuring and destruction of building systems throughout their entire service life. The model reflects the constant interaction of the structure with long-term impact factors. A statistical model has also been developed to determine the probability of the transition of building elements to a state of destruction due to the influence of adverse factors, which is directly related to the loss of their reliability.

Keywords: organizational and technological solutions, reliability, quality control, efficiency, cost, labor productivity