The article considers the strengthening of the upper chord of the triangular strut system as a method for restoring the bearing capacity of a glued laminated timber element according to the 1st group of limit states. The strengthening allowed us to obtain as a result of calculations a strength utilization factor not exceeding the limit value.

Keywords: triangular spacer system, upper chord, glued laminated timber element, modulus of elasticity, volumetric weight, compressive force, bending moment

The article discusses the basic model of the formation of an emulsion layer on a rotating cylinder. Special attention is paid to the study of the influence of various parameters on the internal characteristics of the emulsion formation process. A mathematical description of the displacement layer is given and functional dependencies between the parameters characterizing the emulsion formation process are derived. Based on experimental data, the qualitative influence of "internal" and "external" factors on the formation of the emulsion layer has been studied. The result of the study were graphs, analyzing which the following conclusions can be drawn. An increase in the viscosity of the emulsion leads to a decrease in such parameters as the boundary of the fracture region of a more viscous liquid layer adjacent to the surface of the rotating cylinder, the viscosity of the emulsion in the transition layer, but there is an increase in the consumption of the emulsion. It is also established that the growth of the complex of "external" parameters leads to a decrease in all internal parameters during the formation of the emulsion. The research conducted in the article will help to take into account the obtained dependencies when calculating the operating and design parameters of devices.

Keywords: emulsion layer, viscosity, density, emulsion, rotating cylinder, liquid, emulsion composition

Determining the deformability of the bearing structures of the coating, as an indicator of the use of the stiffness of the cross-section of the elements, is an urgent task, which is aimed at solving the current work. The purpose of the article is a comparative calculation of frame structures under the assumption of a different coating truss solution. The following types of load-bearing roof trusses should be considered: segment truss, trapezoidal truss, triangular truss. The calculation of frames using wood as load-bearing structures for the total effect of permanent and short-term loads causing maximum vertical deformations is given. In this paper, the coefficients of using the rigidity of truss structures using wood are determined and the dependence of the stiffness value on the type of outline of the coating truss is established. A comparison of the calculation results with the normative maximum permissible values allowed us to establish the most effective type of outline of the wooden roof truss.

Keywords: coating truss, modulus of elasticity, stiffness, upper belt, slant, lower belt, computational study, through-hole construction, segmental truss

The article proposes an image recognition algorithm for an automated fiberglass defect inspection system using machine learning methods. Various types of neural network architectures are considered, such as models with a firing rate of neurons, a Hopfield network, a restricted Boltzmann machine, and convolutional neural networks. A convolutional neural network of the ResNet model was chosen for developing the algorithm. To develop the algorithm, a convolutional neural network of the ResNet model was selected. As a result of testing the program, the neural network worked correctly with a high learning percentage.

Keywords: fiberglass, defects, machine learning, convolutional neural networks, ResNet architecture, testing, accuracy

The modern building material, slurry infiltrated fiber concrete - SIFCON, has not only high compressive and tensile strength, but also flexibility and ductility. These properties allow it to be used in nodes of building structures that perceive dynamic, shock, explosive loads, friction, as well as in the area of penetration of reinforced concrete slabs by columns. The paper describes experimental studies of the mechanical properties of samples from ordinary concrete and SIFCON. A comparison of the test results showed the superiority of SIFCON strength indicators over ordinary concrete by 2-4 times. For a wide range of specialists and students in the field of construction design, production of building materials.

Keywords: slurry infiltrated fiber concrete, steel fibers, cement mortar, flexibility, plasticity, energy absorption, water-cement ratio, superplasticizer, compressive strength, bending strength, splitting strength

The article discusses the process of formation of cavitation bubbles. One of the effective designs of regulating equipment is an axial type valve, for which a mathematical description of the process of formation of cavitation bubbles has been developed. This description allows you to evaluate the bubble structure depending on the main operating and design dimensions of the valve.

Keywords: valve, cavitation bubbles, probability, functions

The use of ash and slag mixtures of thermal power plants in the structures of road coverings of highways makes it possible to significantly increase the volume of their reuse. One of the promising directions is their application in the compositions of stabilized soils. To assess the effectiveness of the use of these materials, such indicators as the cost of construction and the total thickness of the pavement structure are used. According to the results of the conducted research, it was found that the reduction in the total thickness of road clothing with layers of ash and slag mixtures of CHP compared with layers of traditional materials was up to 48%, the reduction in the cost of building road clothing structures using ash and slag mixtures is up to 21%.

Keywords: stabilized soils, ash and slag mixtures, road clothing, base of road clothing

The article reveals the topic of improving the processes of concreting monolithic structures. An absentee survey of respondents from among the existing manufacturers of works, construction control engineers and foremen was conducted. Information was obtained that is not always reflected in documentary sources or direct observation. The direct processes of transportation, feeding, laying and care of the concrete mix, as well as related processes, were monitored and analyzed.

Keywords: technologies, organization, technological process, concrete works, monolithic structures, operational control, construction control, economic potential

More attention is being paid to the transition to domestic software with the digitalisation of the construction industry and import substitution. At each stage of construction, additional products are needed, including CAD and BIM. The experience of integration of Russian-made systems for the tasks of information modeling of transport infrastructure and road construction is considered. Within the framework of the work the integration of Vitro-CAD CDE and Topomatic Robur software system was performed. Joint work of the construction project participants in a single information space was organized. The efficiency of work of the project participants was determined due to the release from routine operations. Integration experience has shown that the combination of Vitro-CAD and Topomatic Robur allows to manage project data efficiently, store files with version tracking, coordinate documentation and issue comments to it.

Keywords: common data environment, information space, information model, digital ecosystem, computer-aided design, building information modeling, automation, integration, import substitution, software complex, platform, design documentation, road construction

In the article, based on the estimate of the Euclidean norm of the deviation of the coordinates of the transition and stationary states of the dynamic system, the compression condition of the generalized projection operator of the dynamic system with restrictions is derived. From the principle of contracting mappings, taking into account the derived compression condition of the projection operator, estimates are obtained for the sufficient condition for the stability of the dynamic system of stabilization of the equilibrium position and program motions. The obtained estimates generalize the previously obtained results. Ensuring the stability of the operator of a limited dynamic system is demonstrated experimentally.

Keywords: sufficient condition for stability, projection operator, stabilization of equilibrium position. stabilization of program motions, SimInTech

The paper proposes and specifies the engineering mathematical model of the drive using a block of ferrofluid couplings and, within the framework of preliminary design, studies its dynamic properties, in the course of which transient characteristics are obtained, allowing to assess the qualitative performance of such a drive and to outline measures for their improvement.

Keywords: uninterruptible power supply system, automatic regulation, relay voltage regulator, relay system modeling.

The article examines the principles of developing micro-districts and settlements for individual housing construction. It emphasizes the integration of environmental, innovative, and social aspects into the design and planning processes of such areas. These measures not only enhance the comfort and safety of living but also significantly reduce operational costs, thereby making projects more economically viable. The focus is on the necessity of a comprehensive and interdisciplinary approach to the planning and development of infrastructure in areas designated for individual housing construction. The article also addresses issues related to the infrastructure of micro-districts designed for individual residential development. By analyzing existing practices, it has been found that contemporary urban planning approaches are increasingly oriented toward creating sustainable and comfortable urban environments. A comprehensive analysis of the problem has enabled the identification of the essential components of infrastructure for areas intended for individual housing development. The article underscores that achieving sustainable development in such territories can only be attained through clear regulation of various indicators characterizing these areas.

Keywords: water supply and sanitation systems, Syrian Arab Republic (SAR), reconstruction, consequences of military operations, urban planning

The article presents the study of thermal conductivity of a promising building material “Corrugated veneer”, presents the sequence of the study, develops an installation for research, obtains the thermal conductivity coefficients of the material “Corrugated veneer”.

Keywords: wood materials, finishing materials, building materials, board materials, veneer, laminated wood

The article considers variants of mathematical apparatus systems used in construction control during the construction of monolithic structures. The quality of technological processes in the construction of reinforced concrete buildings determines the existing problems of their reliability and durability. In the course of studying the analytical aspects of assessing the impact of organizational and technical solutions (OTR) on the system of construction quality control of monolithic structures, specialists most often set tasks on modeling the process in question, taking into account the probabilistic nature of the dependence of the system elements. The mathematical devices used in construction control are defined. The technique of improving the efficiency of OTR during construction control has a significant impact on reducing construction time, and also minimizes the number of defects and deviations.

Keywords: construction control, mathematical tools, OTR efficiency, monolithic reinforced concrete construction, quality, physical wear of load-bearing structures

The article is devoted to the solution of the problem of forming mechanisms for ensuring sustainable functioning of natural and man-made risks management processes in territorially distributed organizational systems determined by both the spatio-temporal structure of the enclosing natural landscapes and the characteristics of man-made impact. The article presents and substantiates the position that regional geographic information systems and geoportals should play a key role in the risk management system. The example of the regional GIS "Mordovia" and the geoportals "Metageosystems of Mordovia. Spatial data of the region" and "Natural and cultural heritage of the Republic of Mordovia. Traveling with the Russian Geographical Society" shows the possibility of using an analytical approach to the analysis of geosystems of various hierarchical levels to solve the problem of risk analysis in territorially distributed organizational systems.

Keywords: geographic information system, geoportal, risk analysis, spatial data, geosystems, geographically distributed organizational system