The possibility of using artificial neural networks to assess the current characteristics of pavements and their potential application in the development of road maintenance strategies is considered. The results of the models showed the convergence between the estimated values ​​of the pavement condition and the actual values ​​at all stages of training. The results show that public road authorities can use the developed models to determine the optimal approach to road maintenance and determine the most effective measures to restore their capacity and operational condition.

Keywords: artificial neural networks, backpropagation algorithm, falling weight deflectometer, pavement maintenance, pavement management system

The article deals with the need for reconstruction of rehabilitation institutions. The relevance of this issue today is difficult to overestimate, since the vast majority of medical institutions built in the Soviet era are still working, but over the period of operation they have accumulated significant moral and physical deterioration. That is why the issue of their reconstruction is acute, the implementation of which can significantly increase the comfort of incoming patients and ensure the provision of medical care at a high level.

Keywords: reconstruction, construction, operation, rehabilitation institutions

The effect of a zeolite support on the physicochemical properties of cobalt catalysts prepared by the precipitation method and calcined at 400°C was studied. The values of the specific surface of the catalysts, the degree of cobalt reduction, and the dispersion of the metal were determined, and the presence of functional groups on the surface of the catalysts was determined by BET, TPV, TPD-H2, and IR spectroscopy.

Keywords: catalyst, cobalt oxide, hydrocarbons, dispersion, active surface

The article provides an overview of construction technologies for the construction of multi-storey residential buildings, taking into account the speed of construction and the quality of structures. A summary table of various types of construction is presented, advantages and disadvantages are identified.

Keywords: construction production, optimization, constructive solution, method of construction of buildings, block, panel, large-block, monolithic frame, monolithic, modular, comparison, analysis, advantages, disadvantages

This work is devoted to the problem of the shortcomings of the current regulatory and methodological literature, which complicate the conduct of construction and technical judicial expertise. On the example of the building in Rostov-on-Don, the shortcomings of the normative and methodological literature in the areas of possible use of modern equipment for the inspection of structures are shown. This lack of the necessary normative literature in the field of non-destructive testing is clearly shown. This article shows the difficulties which experts face due to the indicated shortcomings. Conclusions based on the results of the study are made.

Keywords: cconstruction and technical expertise, normative literature, methodical literature, laser scanners, non-destructive control, masonry

The article presents a variant of the analytical dependence of the workability factor on the time of execution of a specific operation by an employee of the transport security unit performing the function of screening passengers and baggage crossing the borders of the transport security zone using technical means of ensuring transport security. A mathematical model of the influence of the human factor on reducing the number of technological operations, as well as the quality of inspection activities during long-term monotonous and homogeneous operations is constructed. A software implementation of passenger questionnaires through the Blockchain system is presented to optimize the work of employees from the transport security units performing the functions of passenger and baggage screening in order to improve the security of transport infrastructure facilities and vehicles from acts of unlawful interference.

Keywords: blockchain, transport security, inspection, data analysis, data processing, mathematical model, workability, optimization, railway transport, transport security units

The article presents the calculation of various variants of corrugated rollers with different characteristics of wall shelf thicknesses and comparison with the standard adopted I-beam used in construction. The main requirement when comparing options is the maximum deflection of the studied beams with a deflection in the reference beam based on the calculation in the Ansys software package, which calculates models using the finite element method.

Keywords: corrugator, finite element method, Ansys software package, comparison of variants, modeling, I-beam, beam

The article considers the cramped conditions of urban development, its types and main problems, during construction work. The organization of monolithic works at the construction site is also presented.

Keywords: monolithic works, constrained construction conditions, constriction, organization of monolithic works, concreting, construction site, monolithic framework, building compaction, problems of constriction, organization of construction, point development

The concept of sustainable development of cities determines the relevance of the formation of organizational and technological approaches to the creation and development of urban public spaces in accordance with modern trends in urban planning and the needs of the population. Urban public spaces are the key to the development of a comfortable urban environment and represent the cultural and social aspect of the modern city.

Keywords: urban public spaces, comfortable urban environment, sustainable development, improvement, city territory, infrastructure

This article is devoted to the study of indoor air quality in a higher education institution: assessment of the distribution patterns of suspended solids by equivalent diameters (RM0.5, RM1, RM2.5, RM5 and RM10).

Keywords: indoor air, indoor air quality, air pollution, dust, solid suspended particles, PM2.5, PM10

The paper justifies the relevance and reviews the issues of energy efficient reconstruction of a construction system at various lifecycle stages, underlining that reconstruction needs to be viewed as a separate phase of the property lifecycle. Despite the fact that construction systems are static, all lifecycle stages are dynamic and require complex control. The diagrams are provided to show the building’s lifecycle and the process of stagewise supervision of energy efficient reconstruction by the client.

Keywords: lifecycle, stage, phase, target system, process layout/structure, performance monitoring

This paper discusses the use of unmanned construction vehicles in the construction industry. Statistics on the growth of investment in the production of construction drones are given. The main directions of using drones in the construction industry are described in detail: topographic survey, urban planning, improving safety on construction sites, roof inspection, building maintenance, security surveillance. The main advantages of new technologies in comparison with traditional ones are indicated and justified. Some shortcomings of modern unmanned technologies from the legal point of view are noted. In conclusion, the article draws conclusions about the future prospects for the use of unmanned aerial vehicles in construction, which will lead to an increase in labor productivity in the industry.

Keywords: inspection of buildings and structures, quadrocopter, drone, unmanned aerial vehicle, UAV, construction, modern technologies, quadrocopter, security, innovation

This work is devoted to assessing the quality of the completed construction and installation work. A number of violations in the technology of facade works were noted. The advantage of a wet facade is noted. The main reasons for the occurrence of violations are considered. There are noted cases in which judicial intervention is required and it becomes necessary to conduct a forensic construction and technical examination. The main aspects that need to be paid attention to by specialists during the construction and technical expertise have been identified.

Keywords: low-rise buildings, facades, quality assessment, compliance, judicial construction and technical expertise, court case

The existing methods of quality control of work in construction are considered, the main purpose of their implementation is formulated. A list of the main signs and properties has been determined for which it is recommended to exercise control. The main methods of control in practice are listed on the example of a nine-story residential building. New ways to improve quality control in the production of works are proposed.

Keywords: control, quality, construction, normative document, defect, damage, tool, BIM, information modeling

In the article, the authors try to identify the importance of forensic construction and technical expertise of trade pavilions, kiosks, etc. The importance of such examinations for the owners of these buildings is also noted, especially if the buildings are non-stationary commercial objects (NTO). In addition, the procedure for examining such a judicial or pre-trial construction and technical expertise is being considered. And the requirements for the expert opinion itself are noted.

Keywords: judicial construction and technical expertise, expertise, trade pavilions, construction and technical expertise, construction, capital structure, NTO, non-stationary trade facilities