This article discusses the possibility of using water wells for water supply of rice irrigation systems. The aim of the study of this work is to study the prospects for the possible use of water wells for irrigation of flood fields of the Krasnodar Territory. This issue has been studied by the example of a water well, which is located in the village of the Black Sea Seversky district of the Krasnodar Territory. The relevance of the study of this issue is expressed in the fact that of all types of agricultural nature management in the Krasnodar Territory, one of the most important types is rice growing. Naturally, in the field of rice production, irrigation sources play an important role, which, in our opinion, include water wells. The relevance of this study is associated with the importance of the production of rice groats, as one of the most important types of agricultural nature management in the Krasnodar Territory and the Republic of Adygea. Irrigation sources are of great importance in the field of rice growing, which consists in the fact that for the irrigation of flood fields, a large amount of water is required, providing a favorable environment for rice growth. At the same time, the quality of rice cultivated directly depends on the qualitative characteristics of the water resources used for rice systems. The value of irrigation sources is that a favorable environment for the cultivation of rice groats is created by water resources, which are used in large quantities for irrigation of rice fields. Water resources used for irrigation of flood fields have a direct impact on the quality of rice cereal, which is grown on irrigated fields. In this regard, there is a need to conduct a study of water resources extracted from water wells for their compliance with sanitary norms and rules, the results of which will be considered in this paper.

Keywords: siltation, reservoir, water resources, floodplain territories, rational water use, water resources

The article provides a brief overview of geomechanical methods for studying the stress-strain state of the soil mass and tunnel lining. The organization of monitoring in tunnels using conventional and fiber-optic systems is considered. Criteria for analysis of monitoring data and structural strength conditions are described

Keywords: railway tunnel, construction, operation, monitoring, strain gauge, stress, strain, strength, bearing capacity

The results of the development of a polymer protective coating based on oligopiperylene styrene binder for the protection of concrete and metal surfaces of structures of buildings and structures from the effects of adverse natural and technogenic factors are presented. Modification of this binder with tetraethoxysilane in an amount of 3-20 wt. including allows you to get a protective coating with good hydrophobic properties. Introduction to the composition of 1-12 wt. including tetraisopropyl titanate significantly improves the adhesive and strength properties of the protective coating, which is associated with the formation of bonds between oligopiperylene styrene and tetraisopropyl titanate, due to chemical interaction between the reactive groups of these compounds. The developed protective polymer coating provides good adhesion to the working surface, is easy to apply technologically, the curing of the coating occurs at room temperature, and the improvement of the strength and hydrophobic characteristics of the coating will significantly expand its field of application.

Keywords: protective coating, oligopiperylene styrene binder, tetraethoxysilane, tetraisopropyl titanate, adhesion, hydrophobicity, contact angle

This article is devoted to the study of a medieval temple Dating from the end of the X - beginning of the XI century, located near the village of datuna in the Republic of Dagestan. It discusses its design features, provides arguments about their possible purpose and symbolic load. Stylistic and semantic analysis is carried out, as a result of which conclusions are drawn about the ownership of construction traditions. The proportions of the temple underlying the compositional structure are analyzed. Based on the revealed proportions, an analogy is drawn with the temple of Solomon, with which other common features are found. As a result, it is concluded that it served as a prototype for the construction of the Dagestan temple.

Keywords: Datun temple, middle ages, religious architecture, Dagestan, proportions, single-nave Basilica, compositional structure, prototype

The calculation of a multi-storey monolithic building of a wall structural scheme for resistance to progressive collapse is considered. Calculations of the building were made for various operating conditions: normal and extreme (emergency impact — destruction of part of the load-bearing walls of the first floor). Recommendations are given for building protection in case of emergency impacts. It is determined that for buildings with a cross-wall system, the appropriate method of protection against progressive collapse is the method of reserving the strength of load-bearing elements. The increase in the cost of materials is about 2 %. Comparison of technical and economic indicators of buildings of wall and frame structural schemes showed that the cost of protection from progressive collapse of buildings with a wall structural scheme is significantly lower than that of frame

Keywords: progressive collapse, emergency impact, strength reservation, cross-wall design scheme, Lira-SAPR, building design model

The article presents an analysis of objects with concrete-filled steel tube columns. Also the article describes methods for solving the concomitant disadvantages and describes ways to increase the effectiveness of this solution. Prospects for studies of increasing the adhesive component of the mutual work of the concrete core and steel shell are presented. The analysis allows you to give recommendations on the following issues: improving the technological level of concrete-filled steel tube columns, the convenience of joining the column with the frame.

Keywords: concrete-filled steel tube columns, combined steel and reinforced concrete structures, tubular section, fixed formwork, steel cage, concrete core, adhesion of materials, side compression effect, frame building, construction in the low-temperature conditio

The question of the possibility of using the well-known semi-empirical method for predicting settlements for underground transport tunnels of small diameter, taking into account correction factors developed for communication tunnels, is being investigated. The relationship between the ratio of the relative depth of laying and settlement of the surface and the selected ground loss volumes is considered.

Keywords: tunnel, volume loss factor, empirical method, finite element model, ground settlement, shielded tunneling, TBM, Tupikov’s correction factor, numerical method

The paper explores the opportunity to use tower cranes with a large boom length for installation of space frames configured as prefabricated units. The opportunity to modify the already existing technology by using new tower cranes with a large boom length allows cutting the cost of construction of industrial buildings with flat structural plates. Cost cuts are realized by reducing the scope of works pertaining to installation and dismantling of crane runway as well as crane relocation toward other spans of the building.

Keywords: space frames, nodal connections, installation, technology, modification, crane

The effective use of high-strength reinforcement in reinforced concrete structures is an important task today. In order to reduce the consumption of materials, especially steel, it is necessary to use high-strength materials more widely in the production of reinforced concrete structures. In recent years, researchers have significantly increased interest in reinforced concrete structures with mixed reinforcement. To determine the effect of the concrete class on the bearing capacity of reinforced concrete columns, a numerical experiment was performed. According to the results of the experiment, it was found that the maximum increase in bearing capacity with all variants of relative eccentricity is observed in racks with previously stretched and non-tensile reinforcement. Thus, the studies showed that the use of columns with mixed reinforcement is advisable. The use of mixed reinforcement in reinforced concrete racks in all cases is more effective than racks with non-tensile reinforcement.

Keywords: concrete, reinforcement, reinforced concrete, prestressing, the relative eccentricity, mixed reinforcement, column, bearing capacity

In the view of most people, the criterion "high-rise buildings" is very blurred. Five or seven storey buildings were considered one or two centuries ago to be tall, but now you will not surprise anyone with a number of storeys over fifty. Russian law sets the maximum possible 75-meter height for residential buildings and 50-meter - for public buildings. The construction of higher facilities is subject to special requirements. The article discusses the development of high-rise buildings of a megalopolis using the example of the city of Rostov-on-Don, presenting famous high-rise buildings in Rostov at present. Along with increasing the number of storeys of buildings, their design features are also changing. The types of structural schemes of high-rise buildings, the materials of the supporting structures of high-rise buildings, their advantages and applications are described. The problems that arise in high-rise construction are described.

Keywords: Rostov-on-Don city, high-rise construction, number of storeys, development, urban planning, zoning, architecture, design, high-strength concrete, high-strength reinforcement

This article explores the use of machine learning methods in vibrodiagnostics. To assess the effectiveness of the use of a neural network, a hypothesis was put forward on the possibility of revealing hidden patterns indicating a defect for structures of the same type with different parameters. The selection of these features by visual analysis of the graphs is difficult due to the large amount of data, which indicates the relevance of solving the classification problem using a neural network. As a result of the study, a fully-connected two-layer neural network was obtained, showing sufficient accuracy of predictions, which confirms the fundamental possibility of using machine learning methods to monitor the state of standard structures.

Keywords: vibration diagnostics, building construction, building, structure, defect, damage, machine learning, neural network

This paper presents the results of the development of a heat-insulating coating based on a polymer binder for thermal insulation of hot metal surfaces of industrial equipment, process plants, pipeline surfaces, operating at temperatures up to 100 0C. The heat-insulating coating is based on a polymer composition containing a mixture of acrylic polymer and styrene-butadiene rubber, hollow phenol-formaldehyde microspheres, pigment and water as a binder. The use of phenol-formaldehyde hollow microspheres in this composition in an amount of 20.0 to 40.0 wt. % as a filler, it allows to reduce the thermal conductivity of the developed coating and increase its strength characteristics, in comparison with a similar coating containing carbon microspheres. The use of this composition allows to obtain a polymer coating with high thermal insulation and mechanical properties.

Keywords: heat-insulating coating, acrylic polymer, styrene-butadiene rubber, hollow phenol-formaldehyde microspheres, tensile strength, thermal conductivity

Nowadays, technologies in construction are rapidly changing, improving and updating. 3D modeling technologies are actively used. In turn, changes in the construction industry are reflected in the existing building regulations, JV and GOST. But often in modern conditions of the capitalist state builders realize building objects in improper quality. Reasons of the given problem are various: reduction of a used material, economy of means on poor quality materials, neglect of quality for the purpose of performance of terms of the contract. In this connection, the role of forensic construction technical expertise is being updated. But for the correct understanding of the role of forensic construction technical expertise, its goals and stages, it is necessary to determine the very essence of forensic construction technical expertise, its differences from other studies conducted by specialists in the field of construction outside the judicial sphere, namely, from the state construction supervision, as well as the essence of the extrajudicial expertise in construction.

Keywords: forensic construction technical expertise, real estate, operation, technical inspection

There is an analysis of the urban development location and the capacity of public spaces for cultural and educational purposes was carried out using the example of cultural centres for Volgograd. The normative and actual material security is determined separately for each administrative district and whole sity. There are suggestions on the advisability of erecting new cultural objects.Dynamics of modern cities is taking into account.

Keywords: planning, cultural centre, cultural and social structure, standard of material security, actual material security

Regular inspection of water supply and sanitation networks helps to reduce accidents that occur in engineering communications. To check the regulatory and technical documentation is recommended to use tele-inspection systems that allow you to get the most accurate information about the technical condition of pipelines in a short time. The article deals with the review and analysis of modern technical systems for tele-inspection and trenchless repair of pipelines. The article considers the requirements of regulatory and technical documentation for such systems. We consider the classification of tele-inspection systems for diagnostics and repair of pipelines by functional characteristics. A review of the current market of domestic and foreign-made technical equipment has shown that all devices for TV inspection of pipeline networks can be classified as follows: push-through TV inspection systems, robot-controlled TV inspection systems and TV inspection systems for trenchless repair. A review of the current market of domestic and foreign-made technical equipment has shown that all devices for tele-inspection of pipeline networks can be classified as follows: push-through tele-inspection systems, tele-inspection systems with remotely controlled robots, and tele-inspection systems for trenchless repair

Keywords: pipeline diagnostics, tele-inspection system, trenchless pipeline repair, visual inspection, repair robot

The article defines the wind load on an open reinforced concrete whatnot located on separate foundations. The wind load on an open bookcase is determined for two wind directions: perpendicular to the axis of the bookcase axis and coinciding with its longitudinal axis. The relationship between the unfavorable vibrations arising from the horizontal vibrations of the structures and the intensity, the spectral composition of the pulsations of the pressure head, and the masses concentrated at the level of each overlap is determined

Keywords: wind load, open whatnot, horizontal vibrations of the structure, composition of the pulsations of high-speed wind pressure

This article analyzes the existing sources of power supply of oil and gas industry facilities, as well as the study of the possible use of alternative energy sources in industrial enterprises; The advantages and disadvantages of using this type of power supply for remote infrastructure are considered.

Keywords: energy, power supply, power plant, industrial facility, wind, solar radiation, power, power plant, wind energy, source

the article presents a comparison of methods for modeling the Foundation of the span structure of the technological transition on permafrost soils in the LIRA-CAD 2015 software package.Numerical simulations using methods such as pinching (linking) and modeling of pile Foundation and soil Foundation showed a significant difference in the calculated values. The conducted research confirms the need to calculate this type of building structures taking into account the influence of the soil base.

Keywords: span structure, technological transition, pile, base, foundation, frozen ground, LIRA-CAD 2015, strength, stiffness, stability, soil model

The paper is based on a review of the scientific publications released from May through October 2019, the greater part of which, namely 14 papers, is included in the Web of Science scientometric database. The authors of the papers analyzed explore the construction industry problems over the past 5 years. The foreign studies listed in the reference section were based on the analysis of reviews falling in the above-mentioned timeline. The purpose of this paper is to identify the problems hindering the implementation of BIM technologies in the construction sector, not only in the foreign countries, but also in Russia.

Keywords: building information modeling, construction organizations, critical problems, external factors, absence of organizational support

The article deals with the issues of regulating the stress-strain state of the design scheme of the coating of the demonstration center by combining the geometry of the interface of the crossbar and the cross frame post. The dependence of the distribution of forces on the solutions of the eaves of the roof truss is established.

Keywords: Arched constructions, finite element method, stress-strain state regulation, optimal design

The huge part of Russia territory is located in the permafrost zone. Mastering of this area is important step for Russia, because the mining is developing at a rapid pace, and mostly oil and gas. There is its own specificity in the construction of buildings and structures on permafrost. Peculiar properties of foundation in the permafrost zone are considered in this article.

Keywords: foundation, permafrost, thermosyphon, oil storage, oil and gas industry, drilling, ammonia

Aerodynamic and hydraulic calculations – time-consuming and important steps in the design of engineering systems. There are many different programs for the calculations of heating and ventilation systems. Such as Autodesk REVIT, software, dramatically gaining popularity in the field of BIM-modeling. Design engineers using this software package for the calculations, are faced with the problem of mismatch of diameters, pressure loss between the program and manual calculation. In this regard, it was necessary to understand this problem: compare the calculation results of velocity and pressure losses in the air ducts and pipings in the program REVIT with traditional methods of calculation, find out what formulas calculates this program . The calculations in software Autodesk REVIT have an errors and inaccuracy. Backed by Russian standards, it is necessary will understand how accurate and correct calculations produces software package. The work examines the results hydraulic and aerodynamic calculations, analysises this results with the results of calculations by traditional methods. Calculations in software Autodesk REVIT is applicable for calculating systems of ventilation, but for calculating systems of heating better not to use this program. For the bold use calculations of program is necessary improvement of the software.

Keywords: BIM-technologies, Building Information Model, Autodesk REVIT, software, BIM-modeling, aerodynamic calculation, hydraulic calculation, system of ventilation, system оf heating, comparative analysis

The problems of the operation of buildings on subsidence soils of the Rostov region are considered. A brief analysis of the methods used to consolidate the soil. Concrete examples of the use of cementation and silicatization of soil bases in the development of reconstruction projects for buildings in the cities of Shakhty and Taganrog, Rostov Region are given. An integrated approach to the choice of technology for fixing the soil base of reconstructed objects is proposed, which provides for the simultaneous consideration of the following factors: - basic physical and mechanical properties of soils; - mineralogical composition of soils; - change in the state of the soil base during the operation of the building (local decompression, erosion, chemical and mechanical suffusion, etc.); - chemical composition and groundwater level, forecast of their change; - terrain, the danger of activation of landslide processes; - the presence of retaining walls and other retaining structures in the zone of influence, assessment of the loads on them in the process of consolidation; - the technical condition of building structures of the building, including its underground part and the blind area; - the status of the reconstructed object. With special care and precaution, it is necessary to choose the technological and design parameters of soil consolidation for cultural heritage sites of federal or regional significance; - technical and economic indicators.

Keywords: subsidence of soils, strengthening of soils, fixing of soils, cementation, silicatization, Geology, construction, cultural heritage object

The article discusses the main problems in carrying out construction work in the cramped conditions of large urban agglomerations. Recommendations for solving existing problems are offered.

Keywords: cramped conditions, urban agglomeration, environmental safety, organizational and technological solutions, environment, technological environment, organization of construction, construction technologies

The influence of socio-economic factors creates the need for the use of new design solutions with the introduction of advanced methods, as well as technical means in design. The article discusses the basic algorithmic methods that define a new approach in architectural practice. Using the experience of designing as an example, the advantages of using algorithmic software systems were determined, which are responsible for increasing the quality characteristics of the final result, increasing the value of the project due to the limitless possibilities of graphical presentation by program algorithmic modeling methods.

Keywords: algorithmic methods, computational design, shaping, Galapagos plugin, script, simulation