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

In this paper, an analysis of the calculation results is carried out, which makes it possible to assess the real impact of impact and explosive effects from UAVs on the strength of reinforced concrete structures. Load limits are set, depending on the four most common types of walls. The previously published classification made it possible to identify the main parameters necessary for a detailed load calculation.

Keywords: extreme loads, explosion, self-supporting walls, reinforced walls, non-reinforced walls, load-bearing walls, UAVs, strength testing, building structures, shock waves

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

The reuse of ash and slag waste from coal combustion is of great economic and environmental importance. The most material-intensive area of their reuse is the stabilization of ash and slag mixtures with Portland cement for the construction of layers of highways. A technical understanding of the processes of structure formation in stabilized ash and slag mixtures makes it possible to regulate the final properties and quality of the layers of road clothing and the roadbed. Strengthening of ash and slag mixtures with Portland cement makes it possible to increase the physical and mechanical properties of ash and slag mixtures: strength, frost resistance, density, etc.

Keywords: ash and slag mixtures, stabilized ash and slag mixtures, structure formation of stabilized ash and slag mixtures, sportland cement, microstructure of the ash and slag mixture

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 loading history, including duration, stress level, number of cycles and environmental influences, also affects concrete performance by increasing strength while reducing deformability. Under long-term service, concrete can exhibit elastic behaviour until stresses in the order of 70-80% of the expected compressive strength are reached. The plastic and viscous properties of concrete play an important role under dynamic loading, determining its dynamic hardening capacity. Thus, long-term operation significantly alters the dissipative properties of concrete and affects its response under accidental dynamic effects. The aim of this study was to assess the extent to which the deformed state of the frame as a result of the erection sequence, creep and shrinkage strain accumulation influences the collapse resistance in an emergency situation.The process of deformation of reinforced concrete frame of a multi-storey building in an emergency design situation was modelled, taking into account the stage of construction and different age of concrete at the moment of load application. The computational analysis was performed in quasi-static formulation in Scad Office 21.1.9.9 using the ‘Assembly’ module.According to the results of the study, deformations and forces in the elements of the load-bearing system after the initial local collapse in it have been obtained and analysed. It is shown that when taking into account the sequence of building erection, accumulation of creep and shrinkage deformations, the building resistance to progressive collapse decreases.

Keywords: monolithic reinforced concrete frame, progressive collapse, creep, shrinkage, modulus of elasticity, modulus of deformation, static-dynamic loading

The installation of foundations of production facilities on sites subject to karst formation and suffusion processes in conditions of weak soils is a serious problem in the design and construction of large distribution centers. In such a situation, it is necessary to calculate the load-bearing elements of the building for the effect of the lack of reaction of the base under the sole of the foundations on a site with a diameter of 3.0 m, located in the most unfavorable places from the point of view of structural work. Such unfavorable locations of a karst sinkhole can be determined by digitally constructing "influence functions" and obtaining "envelope" diagrams of pressure on the base, foundation sediment, and structural reinforcement. If the maximum allowable precipitation of the foundations obtained by calculation is exceeded, it is possible to strengthen the soils by layer-by-layer recycling, which will allow reaching the normative indicators.

Keywords: karst formation, suffusion, sinkhole, calculated combination of loads, special combination of loads, reinforcement, foundation sedimentation, ground pressure

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

The ecology of modern megacities is one of the most relevant and acute topics of our time. Rapid growth of cities, increase in the urban population and development of industry have led to significant changes in the environment. This article examines the main environmental problems of modern megacities, factors affecting the ecology of urban areas. An analysis of the influence of solar radiation on the formation of the microclimate and ecology of the air basin of cities is carried out. The conditions for the occurrence of air flows of thermal origin, which contribute to the improvement of the aeration regime of urban areas, are studied.

Keywords: ecology, urban area, air exchange, convective flows, insolation, aeration regime, dense development, solar radiation, air basin, microclimate, heat island

The study of the shaping of these objects makes it possible to create new in shape and structure, durable and reliable building structures. This makes it possible to improve building structures based on the principles outlined in this study. The shapes and structure of some plant objects, such as bamboo, are considered. The search for optimal design options with natural structures in construction is especially relevant and gives rise to such a direction in science as bionics. And the introduction of mathematical modeling methods using bionic principles in the design creates conditions for the construction of more durable and reliable construction structures.

Keywords: plant object, model, bionics, shape, structure, construction

The article examines the use of decorative details of various origins (Ancient Russian, Western European, Oriental) in the work of Hippolyte Monighetti using the example of St. Barbara's Church in Vevey, the Tsarskoye Selo Lyceum and its other buildings.

Keywords: Hippolyte Monighetti, eclectic architecture, stylization, historicism, neo-Russian style

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

This article raises the question of the role of artistic and aesthetic forcing solutions for the reconstruction of commercial enterprises located in the historical center of Rostov-on-Don. The visual component of the anthropogenic environment, especially the urban fabric of the historical center, is one of the most important factors shaping the quality of life in the city. The analysis provided illustrates two different but illustrative situations. The first of which is an intervention in the structure of one building, the second is the reconstruction of a block (insert). As a result of the research, conceptual proposals were formed based on such categories as style, coloristic solution, material, number of floors and based on the analysis.

Keywords: urban environment, reconstruction of the quarter, historical buildings, reconstruction of commercial enterprises

The paper considers the problem of the stress state of a rock array with continuous inhomogeneity. This type of inhomogeneity can be observed in rock arrays with cavities created by explosion. In this case, the dependence was chosen when the main mechanical characteristics depend only on one coordinate - the radius. It was also taken into account that the chosen dependence gives an opportunity to obtain relatively simple methods of solving the problems. The chosen calculation scheme of the problem allows to reduce it to the solution of one-dimensional task. For the case of the centrally symmetric problem we consider the solving equation, which is an ordinary inhomogeneous differential equation of the second order with variable coefficients. Using the substitution of variables, we can proceed to the solution of the hypergeometric equation. Solutions of hypergeometric equations are given in the form of hypergeometric series, which are known to converge. Using inverse substitutions, the stresses are found. The stress state of the rock array at different degrees of its heterogeneity is determined. The results are presented in the form of graphs. Comparison with similar solutions for homogeneous arrays is carried out. The presented results allow us to conclude that when solving problems on the stress state of rock arrays with cavities, it is necessary to take into account the heterogeneity of the arrays obtained in the process of creating such cavities with the help of explosion.

Keywords: heterogeneity of the medium, rock array, spherical cavity, stress state

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 analysis of the environmental impact of the largest enterprises located in the Southern and Northern industrial zones of the linear city of Volgograd has been carried out, and the need to change approaches to designing a comfortable urban environment, which currently take into account the average data for characterizing the ecological state of a particular territory, has been shown. The analysis confirmed the need to take into account the local impact of industrial enterprises on the components of the urban environment when justifying the selection and planning of appropriate modern spaces within the framework of the Federal Project "Creating a comfortable Urban environment".

Keywords: urban environment, comfort, urban environment quality index, modern spaces, environmental analysis, environmental friendliness, environmental safety

In the process of developing a plot of the junction field, the theoretical calculation of the load capacity and the permissible load on the piles is carried out, based on which the number of piles and their arrangement are decided. The results of theoretical calculations are in some cases underestimated when compared with actual values, and the application of theoretical calculation may lead to an increase in construction costs. The article examines the change of pile size and position in a swave field after the actual results of the field tests are obtained. The technical-economic comparison was carried out and the conclusion of the effectiveness of the adopted solution for the three designed houses was drawn.

Keywords: pile, load-bearing capacity, the maximum weight load, pile field, techno-economic comparison

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 contains the results of the inspection of power transmission line structures within the framework of the preparation of design documentation for the reconstruction of cable racks and power transmission line supports due to the increase in the diameter of cables and, as a consequence, the increase in the load on the racks located in the Chaunsky District of the Chukotka Autonomous Okrug. The article presents a geodetic survey of load-bearing structures (determination of deflections and displacements of structures), lists of defects and damages, verification calculations of structures, and measures to strengthen structures.

Keywords: bearing capacity, inspection of structures, overhead power lines, wooden structures, supports, overpasses

Establishing relationships between construction and the pristine preservation of the environment, prioritizing what is necessary and sufficient, and balancing requirements and capabilities are a prerequisite for the harmonious development of the planet. But often, high rates of industrialization and local decision-making threaten the stability and harmonious development of the environment. The main problem is the disparity of goals and methods between design specializations. Each employee of a related specialty performs a task in accordance with current regulations, without thinking about the impact of the decision on the future object and its aesthetics. The concept of support and participation meets the requirements of multitasking and encourages an architect to be not only an architect, but also a social worker, engineer, fighter, diplomat, and solve environmental problems. The aim of the authors is to substantiate the need for flexible solutions in engineering and construction design, joint solutions to the problems of creating a favorable environment, and the participation of the architect in all areas of the building's life cycle.

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

The authors of the article raise the question of the value of the graphic heritage of famous architects, which they brought when they were sent abroad (on so-called retirement trips) to study architectural monuments, and the significance of these works for their design activities. The development of retirement at the Academy of Fine Arts is briefly considered. Using the example of drawings made by I.A. Monighetti abroad, in order to get acquainted with the world's artistic and architectural monuments, a comparative analysis of measurements preserved in the library's collection with fragments of his specific buildings is carried out. In this publication, for the first time, some of the surviving works of I.A. Monighetti, which are in the collection of the library of St. Petersburg State University, are introduced into scientific circulation. The method of using the studied architectural monuments in the practical works of the master is shown.

Keywords: stages, architectural education, Academy of fine Arts, retirement, graphic heritage, projects, architect, Hippolyte Monighetti

The article studies the application of neural networks with long short-term memory (LSTM) for forecasting the precipitation of asphalt-resin-paraffin deposits (ARPD) during oil pumping through main oil pipelines. The authors of the article outline the relevance of the problem of ARPD formation in main oil transportation and consider modern approaches to mathematical modeling of forecasting the precipitation of deposits. The aim of the study was to develop a neural network model that allows constructing a graph of the distribution of ARPD along the length of the model pipeline over time. Taking into account the features of various types of neural networks and the available input data, a corresponding neural network model based on LSTM was developed. The key parameters of the "oil - pipeline - soil" system were determined, which should be taken into account as initial data. The developed model demonstrates a sufficient degree of forecasting accuracy and at the same time has prospects for its improvement. The results obtained can be applied by operators of main oil transportation for more accurate forecasting and determining the most cost-effective period for cleaning the pipeline.

Keywords: recurrent neural network, asphalt-resin-paraffin deposits, neural networks, forecasting, short-term long-term memory networks, oil trunk pipeline, oil transportation