The article discusses the main problems in carrying out construction work in cramped conditions. A survey was conducted among the construction participants, recommendations were given on the selection of organizational and construction solutions.

Keywords: cramped conditions, noise, environmental safety, organizational and technological solutions, point building, environment, technological environment, construction organization, construction technologies, BIM, VR, integrated solutions

The results of a study of the development of a polymer heat-insulating coating for the insulation of heated metal surfaces of industrial and engineering equipment, industrial plants, building structures, working surfaces of pipelines operated at low (up to 1000C) temperatures are presented. The coating was developed on the basis of a polymer binder, which is a mixture of styrene-butadiene rubber and acrylic polymer, hollow carbon microspheres, pigment and water. The use of hollow carbon microspheres in this coating as a filler in an amount of 20.0 to 30.0 parts by weight reduces the thermal conductivity of the coating, compared with the known containing hollow glass or ceramic microspheres.

Keywords: thermal insulation coating, polymer binder, hollow carbon microspheres, thermal conductivity, tensile strength

The article presents the results of an on-site test spatial metal farm of an aircraft hangar with a span of 72 m. A comparative analysis of the data obtained by the simulation of the farm from the predicted loads (taking into account the actual geometry) and the on-site tests is performed. During the assessment of the technical condition and testing, significant errors were identified in the design and manufacture of gate frames structures,which could lead to loss of bearing capacity or unsuitability for normal operation. Based on the test results, measures were developed and implemented to strengthen the elements of the farm, repeated full-scale tests were conducted. Based on the foregoing, the span structure is recognized as suitable for safe operation.

Keywords: test, metal truss, bolted connections, compliance, bearing capacity, deformability, gate frame, reliability, static calculation

The article presents experimental data on changes in the stress-strain state of the soil of the base of the experimental pit. The research was carried out in the Moscow region, an extended pit had a depth of 4 meters. The excavation of pit was carried out mainly in clay loams which had various consistencies. During the experiment, the required number of benchmarks, surface grades and pressure sensors was established. The main issues of the in-situ research were to obtain data on the change in the natural stress state as a result of excavation of the foundation pit over time, on the patterns of soil deformation along the depth of the foundation pit and of the sides and, accordingly, on the development of an active zone of redistribution of initial stresses. The results of deformations of the day surface of the foundation pit were obtained and analyzed, the character of the change in deformations along the depth of the foundation pit was studied. As the research had been continued for 2.5 months, the necessary conclusions about the features of the development of the deformation of the foundation pit over time were made.

Keywords: foundation pit, experimental research, patterns of deformation, stress state, active zone

The article describes an approximate analytical method for calculating the humidity regime of multi-layer building enclosing structures. The novelty of the proposed method consists in using an analytical dependence to determine the position of the possible condensation plane obtained as a result of the study of the function representing the difference between the partial pressure of water vapor in the considered section of the enclosure structure and the partial pressure of saturated water vapor at the extremum. The results of calculating the humidity regime of the external wall of a residential building under construction in the city of Samara, using a monolithic bespeschany expanded clay concrete with a density equal to 600 kg/m3, are presented. The assessment of moisture accumulation in the considered external wall both for the annual period of operation of the building, and for the period of months with negative temperatures, showed compliance with the regulatory requirements for heated rooms

Keywords: enclosing structure, humidity mode, moisture transfer, vapor penetration resistance, water vapor, condensation plane

This article discusses the calculations of the feasibility study for the expansion of housing construction in the city of Taganrog. The choice and justification of the number of storeys, design scheme, space-planning solutions for new construction for the development of design solutions is based on natural and climatic, urban planning, social and economic factors that are specific to each specific territory. To implement effective design solutions in housing construction, it is necessary to consider options for both new construction and reconstruction of the existing housing stock of the city. Technical and economic calculations for the reconstruction of existing residential buildings include determining the effectiveness of the demolition of old existing buildings, construction of new facilities of various functions in the liberated territories, modernization of existing residential buildings and other measures to improve the quality of life of the population living in a particular city. Effective design solutions for the development of housing construction in Taganrog require an economic assessment of possible options, which must be worked out in the pre-project documents, such as a feasibility study of the construction of objects.

Keywords: feasibility study, Economics of urban planning, pre-project preparation, investment efficiency, urban planning, construction Economics, effective design solutions, design, housing construction, housing stock

The article describes an innovative way of monitoring, control and inspection of buildings and structures using unmanned aerial vehicles, the main advantages of this method, examples are given. The purpose of this work is to prove the effectiveness of the use of drones for the inspection of hard-to-reach and high-altitude objects.

Keywords: inspection of buildings and structures, quadrocopter, drone, unmanned aerial vehicle, defect, wear, inaccessibility, thermal sensor, accessibility, safety

The authors of the article developed an autonomous energy supply system for remote military facilities and settlements using liquefied natural gas. A characteristic feature of the developed system is a simplified constructive design of cryogenic equipment for liquefied natural gas, increased reliability and service efficiency of an autonomous energy supply system, as well as the possibility of independent operation of a gas engine and a boiler station from each other.

Keywords: Boiler room, liquefied natural gas, military infrastructure facility, autonomous energy supply

Improvement of energy efficiency of buildings by minimizing heat loss inside the premises and optimizing energy consumption is an urgent problem. The solution of the problem requires consideration of the impact of climatic factors on buildings - firstly, it is necessary to ensure safe thermal insulation of external walls, and secondly, to use effective thermal insulation materials. Being essentially volumetric geometric figures of various shapes, buildings react differently to climatic factors, as their heat resistance directly depends on the shapes and volumes. The article analyzes the dependence of the heat resistance of urban buildings on their geometric shapes and volumes. Using the example of the Evolution Tower of the Moscow International Business Center Moscow-City, the heat loss of rooms located on floors with different heights was calculated and changes in the main climatic factors in terms of the height of the object were revealed.

Keywords: buildings, heat loss, energy consumption, heat resistance, energy efficiency, enclosing structures, urban environment, thermal insulation, design, natural and climatic factors

In order to speed up consolidation, vertical drainage has proven to be a good option for the construction of modified bases . A set of experimental field studies was conducted to study the influence of self-forming vertical sand drains on the process of consolidation of water -saturated soil. Experimental equipment for the construction of vertical sand drains for work in Western Siberia has been developed.

Keywords: water- saturated soil, peat, consolidation, deep vibration, drainage agent, sand drains, modified base

The article considers the main stages of industrial architecture and construction’ development in the word during the last centuries.The principal architectural and structural desicions of industrial buildings are being analyzed, which were changed with time as well as different approaches to internal climatic environment of these buildings.It is noted that one of the most important regimes of the internal environment is a lighting regime which may be provided by natural or artificial methods.The natural method means prevision of natural illimination in premises and this requires the structural desicions to install windows and skylights in the workshops in question .This point is also considered in the article.The results of the analysis are being summarized in form of sertain conclusions and recomendations.

Keywords: Industrial buldings; arhitectural and structural desvions; indoor lighting envircnment; systems of side and top natural lighting; efficiency of windows, monitors and skylights

The article provides a study and calculation of the dependence of the hazardous area resulting from the operation of the flare equipment on the height of the flare at which service equipment and personnel can operate

Keywords: flare unit, radiation intensity, safe operation zone, thermal voltage

The article deals with the problem of improving the structural safety of cable-stayed structures . The mechanisms for regulating the risk of accidents of an object at the stages of its construction and operation are presented. The procedure for certifying the requirements of the standard is described. The stages of protection of cable-stayed structures from corrosion are given and the optimal position for increasing the corrosion resistance of ropes and fasteners is presented. Recommendations are given on the possibilities of increasing the operational durability.

Keywords: structural safety, cable- stayed structures , corrosion, rope, anchors, operation, accident, risk, durability

The issue of renovation and prospects for the integrated development of the territory of the old airport in the city of Rostov-on-Don, the possibility of locating objects with various functional purposes, determining the direction of the new use of the territory are considered. Prerequisites are being formed for the creation of a large new multifunctional Eastern planning district of the city with the formation of a social, business, commercial, residential, recreational, and innovative zones for the full activity of the population. Environmental observations and data analysis are carried out to forecast development prospects and improve the level of comfort for people living in this area. Ways of purifying the atmospheric air and measures to improve the state of the urban environment are considered. Summarizing of the development of effective use, expediency and profitability of renovation of the territories of the old airport of Rostov-on-Don.

Keywords: transformation, renovation, territory, development, project implementation, economic feasibility, environmental situation

The article considers the results of development of water treatment technology for household drinking water in Semey, presents a comparative analysis of widely used disinfectants, and considers technological schemes for water disinfection with chlorine dioxide and a combined disinfectant " chlorine dioxide and chlorine".

Keywords: household drinking water, disinfectants, chlorine

The paper considers the results of research on the use of various types of approximations of concrete deformation diagrams on the example of calculating a large-span reinforced concrete truss with a length of 18 m. calculations were performed taking into account the physical nonlinearity of concrete and reinforcement. The following concrete deformation diagrams were used : bilinear, trilinear , and curved with a descending branch. The result of the calculation was the forces in the truss rods, the displacement and the width of the crack opening. Conclusions were made about the influence of the choice of the concrete deformation diagram on the calculation results.

Keywords: concrete, deformation diagram, approximation, physical nonlinearity, stress-strain state, longitudinal force, bending moment, displacement, crack resistance , truss

The rapid development of infrastructure contributes to the development of building technologies and materials. Today, in addition to classic building materials, completely new technological composites - pultruded profiles - have appeared. These materials have a lot of advantages compared to classic materials, but this product also has a huge drawback - unstudied. To date, there are no widely accepted design standards or instructions available to practicing design engineers.As a consequence, now, most construction projects rely on manufacturers' design manuals, which are often incomplete and too cautious. The purpose of this article is to develop provisions for the calculation of structures of pultruded profiles

Keywords: pultruded profiles, stretched elements, calculation of stretched elements

Maintenance of buildings and structures is a complex of interrelated technical and organizational measures aimed at preventing premature wear and aging of certain building structures, ensuring their smooth operation throughout the service life.

Keywords: foundations and foundations, construction, buildings and structures, operation, basement walls, soil, destruction

In the work it is proposed to use the principle of zonal placement of materials in prefabricated-monolithic bending structures with the use of light concrete, as well as combined reinforcement. The upper (monolithic) layer is preferably made of light concrete of low strength, and the lower (prefabricated elements) - of steel fibre concrete based on light concrete of higher strength. Rod and fibre reinforcement are located in prefabricated elements, which under operating loads will be in stretched zone of bent elements.The results of experimental studies of crack resistance and deformation of steel-fibre-fluorophobetone (SFTB) prefabricated monolithic bending elements on the basis of shoe filler of Kamenskoe deposit of Kabardino-Balkan Republic are presented in the work. Based on analysis of obtained data correlation dependence is derived and character and degree of influence of various factors on crack resistance and deformability of assembled monolithic combined reinforced bending elements is revealed. The following conclusions have been drawn: reinforcement of prefabricated elements of flexable monolithic structures made of tuphobetone with rods and fibres allows to significantly increase their crack resistance; Parameters of combined reinforcement of prefabricated elements, assignment of their geometrical dimensions, as well as dimensions of sections of bent prefabricated-monolithic structures from tuphobetone as a whole can be assigned taking into account correlation dependencies for evaluation of crack resistance obtained from the results of these studies.

Keywords: Stalefibrotaphobetone, monolithic assembly, zonal arrangement, combined reinforcement, reduced reinforcement, strength of monolithic concrete, correlation dependence, crack resistance, deformability, factors, parameters of combined reinforcement

The article presents the results of a study of the deflections of a monolithic flat floor with a different grid of columns with prestressed reinforcement without adhesion to concrete. To analyze the deflections, numerical studies of slabs with different rectangular columns and thicknesses were performed. The studies were performed using the LIRA CAD software package. The aspect ratio of rectangular cells of monolithic flat floors is determined, for which the application of prestressing is ineffective on the short side of the cell or most effective on the long side. It was revealed that the use of high-strength reinforcement of the "monostrand" type is most effective for a grid of columns 5x9m from the volume of the studied cell sides. It was found that the application of post-tension on the short side of the slab cell practically does not affect the total deflection of the cell - with the aspect ratio a / b> 1.2. The conclusion is drawn about the increase in the efficiency of using contour reinforcement with an increase in the deflections that affect the amount of rope repulsion. The results can be used in the design of slabs using prestressed reinforcement without adhesion to concrete of the "monostrand" type.

Keywords: rope, high-strength reinforcement, finite element, monostrand, repulse, prestressing, post-stressing, deflection

The paper analyzes the conditions for the formation of a microclimate of urban residential area with high-rise buildings. High-rise buildings in big cities have a double influence on the living environment – on the one hand, they change wind loads, and on the other hand they affect the direction and speed of the wind. The environmentally unfavorable zones of high-rise buildings, as well as the causes and sources of pollution, such as emerging transport and engineering infrastructure due to development of high-rise housing, have been identified. In high-rise housing areas, zones with impaired air exchange, which contribute to the formation of the “heat island”, have been indicated.

Keywords: urbanization; ecology; high-rise building; urban development; heat island; ascending air flow; temperature inversion; microclimatic conditions; terrain aerodynamics; living environment

Thermal imaging technology has become one of the most valuable diagnostic tools for inspecting and inspecting buildings and structures. This article describes the features of this method, the history of its creation, the basic principles of thermal imaging cameras. The authors of the article show the scope of thermal imaging technologies and their place in the construction industry. This article describes in detail both the positive aspects of thermal imaging technologies and their shortcomings. The authors concluded that thermal imaging cameras are a universal tool, and new innovative ways to use them have become a key technology for construction inspection work around the world.

Keywords: thermal imager, thermography, thermal imaging device, building inspection, reconstruction, energy audit, construction diagnostics, thermal imaging

Conducting judicial construction and technical expertise, must comply with certain procedures and rules. The article systematizes the main tasks of the examination; determined the purpose of its implementation; describes how to conduct a hearing; The authors revealed the fact that the expert is criminally responsible for the opinion provided.

Keywords: judicial construction and technical expertise, expert-builder, regulatory documentation, regulations of the construction, field test, expert opinion, executive documentation, quality of construction work, regulation of the hearing

The construction of social infrastructure is an integral part of improving the quality of life. The study systematized the main problems faced by the developer and the state in the construction of social infrastructure, provides an approximate list of measures that can improve the situation.

Keywords: social infrastructure, state, developer, economy, residential complex, public-private sector, housing construction, state, operation

The authors propose to consider an interesting solution for finding real estate using GIS - technologies. This method can significantly reduce the time it takes to select a property. This article shows how the data processing capabilities of scientific computing tools for Python and the visualization and analysis capabilities of ArcGIS geospatial data can be used to build a model that generates a short list of houses that meet the needs and desires of potential buyers. And although the choice of a house is purely individual, there are a lot of common factors. Such as the total area, the number of floors and rooms, the presence of a garage and much more. Also, when buying a house, you are looking for proximity to services such as food, pharmacies, emergency rooms, child care facilities, parks, etc. You can use the ArcGIS API geocoding module for Python to search for such objects at a given distance around the house. This method suggests combining all the necessary conditions into one system, which will significantly reduce the list of real estate objects on the market and choose the most optimal options.

Keywords: GIS, ArcGIS, real estate, Python, maps, histograms, filter, DataFrame, spatial distribution, geocoding