The centralized heating system does not have a particularly flexible operation. Often one can observe a situation where people in the middle of winter are forced to open windows so that the temperature in the room becomes more or less acceptable. The purpose of this article to consider advantage of use of automatic regulators, to disclose their principle of action and influence on hydraulic stability of a heating system.

Keywords: thermostatic valve, hydraulic stability, thermostat, room microclimate, hydraulic resistance, circulation rings, coordination of the heating system, radiator, room temperature, balancing

The paper deals with the results of study on the degrees of stress inhomogeneity caused by interaction between differently oriented crystalline grains in macrovolumes in case of non-uniform uniaxial tension. Calculation of finite element volume consisting of forty grains is performed. It has been revealed that the quantity of forty grains is enough for constituting the smallest body volume, which can be assumed to have the averaged properties of a macrovolume. Directions of crystallographic axes were selected randomly. Calculations were performed for various metals with cubic and hexagonal lattices. Based on the results of calculations, the curves of normal stresses in the central cross-section of the elementary volume were constructed. It has been found that the significant exceedance of normal stress values is possible in comparison to the values calculated for quasi-isotropic fine-grain material. Dependence between the degree of stress inhomogeneity and the degree of anisotropy of elastic properties has been demonstrated

Keywords: microvolume, macrovolume, non-uniform tension, degree of stress inhomogeneity

Protection of water resources and environmental management are directly related to the development of environmentally friendly technologies for the disposal of liquids with pathogenic properties. A significant proportion of this type of waste is wastewater and liquid manure. The urgency of application of technical means of intensification of process of utilization of liquid fraction of waste of animal husbandry, in particular liquid manure and manure drains is proved. The longest and most complex operation of the recycling cycle is disinfection. Analyzed design the most promising activators disinfection of this waste. The prospects of application of the technical solution in the form of a matrix of retention of ferromagnetic particles of the activator inductor are proved. The proposed solution is patented and can significantly improve the performance and quality of operation of disinfection activators when working with liquid media.

Keywords: liquid fraction of animal waste, liquid manure, manure effluents, disposal, disinfection, disinfection activators, substantiation of activator design

In the construction and use of software technologies, including roads, using GIS and CAD technology. We can also use technologies without data to work with attribute information. GIS is used to manage a large number of different-scale information on construction, reconstruction,etc.Any construction consists of several stages, including the construction of roads, starting, as we see from the planning, then the design and coordination of objects and putting it into operation. GIS during construction is considered in conjunction with all stages., at what first analyze the location of the object on the map. GIS in construction is one of the most important links in the overall planning system.

Keywords: construction, geographic information systems, reconstruction,management, stages, planning, digitization, route, facilities, road

The article deals with the human activity that is carried out in the spatial-geometrical conditions of the city. The main interest presents the distribution of forms an activity on the territory of the urban area. The allocation identified the social and functional frames or carcases, which characterized by the consolidation of properties, density, sparsity, and scattering. The skeletons set the degree of mixed use and diversity activities, and track the social and functional processes of their dynamics and changes in the spatial and geometrical properties of the urban environment.

Keywords: Human activities, spatial and geometric conditions, distribution activities, social and functional carcases, consolidation and diversity of activities

This article raised the problem of the rapid pace of urban development and the conditions for comfortable living of the urban population. To solve these problems, the concept of “Smart City” was created. "Smart City" is a system that provides a high level of urban life, increasing the profitability of resource use by combining all the services and information systems of the city. The main elements of this concept and their role in the program are shown. There are ways to solve problems due to the implementation of the Smart City program. The question of the need for the growth of smart cities, and also shows the reasons for the long development of cities in this direction. The main ideas of the implementation of the "Smart City" program are described. The basic strategies for the development of "smart" cities in Russia are given.

Keywords: smart city concept, intelligent urban environment, infrastructure, urbanization, geographic information system, intelligent transport system, integrated sensors, security, automated building management system, digital technologies

The article presents the summary indicators for 2018, namely the number of completed buildings with a height of 200 meters and the proportion of the main construction material used in the construction. The analysis of the most prominent high-rise construction projects over the past ten years has been carried out and universal techniques have been formulated that allow to achieve improved energy efficiency and environmental friendliness of high-rise buildings. The description of each reception is accompanied by an example of its implementation in a specific unique building.

Keywords: high-rise building, energy efficiency, eco-friendly skyscraper, environmental control, modular energy-efficient glazing, atrium spaces, architoprofilness

The article is devoted to the conditions and tasks of the methodology of adaptation and preparation of information models of buildings and structures for subsequent implementation and effective application in the system of technical operation of the building. The following issues are addressed: analysis of the use of BIM-model at the operational stage; analysis of the difficulties encountered when using unprepared BIM-model in operation; synthesis of existing and development of alternative recommendations for filling the information model with data at each stage of design and construction for subsequent use in the operation service; the study of tools that help in the preparation of BIM-model; development of algorithms that optimize the preparation of an information model for the operation of an object.

Keywords: BIM-technologies, information modeling, construction, 3D-model, virtual copy, construction

The paper deals with the study of the dynamic characteristics of the coating farm. Due to the changes in the company's technological regulations, it became necessary to install additional ventilation equipment with its output to the roof of the shop. The study showed that to ensure safe operation in the structural scheme of bearing structures it is necessary to organize additional units. Dynamic load on the supporting structures is created by the operation of ventilation equipment. The spectrum of natural oscillation frequencies is determined. The values of these frequencies were compared with the frequency of forced oscillations of the fans. Graphs of the changes in natural frequencies when the fan operating frequency. According to the chart, when the frequency of the driving force coincides with the frequency of natural oscillations, the inertia forces increase sharply, which indicates the passage of the resonance zone. A study of changes in dynamic forces due to rotor imbalance was conducted. The value of the gap arising at wear of bearings at which there will be a destruction of a basic element of a farm was calculated.

Keywords: vibrations, forced vibrations, frequency, resonance, truss

Experimental studies were conducted on the selection of rocks whose properties would satisfy the requirements for decorative concrete blocks made from them. Such properties as decorative effect, compressive strength, water absorption, abrasion resistance, impact resistance, frost resistance, etc. were evaluated. The properties of fine aggregate were also evaluated, from carbonate rocks — sand. Based on the work carried out, proposals were developed for a rational selection of the composition of decorative concrete

Keywords: decorative features, abrasivity, marbled limestone, frost resistance, aggregates

The construction and repair of the road network, taking into account the use of new materials, technology and, accordingly, technologies, raises the question of improving the management system of work methods and the targeted use of road construction machinery. The constructed algorithms for the constant monitoring and control of the execution of work on the objects are based on the methods of pattern and character recognition. This control system monitors and controls the movement of construction equipment and functional operations performed by the working bodies of road-building machines in real time. The search and selection of optimal solution algorithms, both managerial and production tasks, is based on solving problems in conditions of uncertain factor space and on the basis of economic justification. The main criterion for the advancement of production automation is economic feasibility.

Keywords: integrated mechanization and automation of road construction works, automated control systems, pattern recognition, 3D model, information systems, uncertainty, factor space, structural layers, road bed, auto grader, machine

The article presents a theoretical description and procedure for calculating the three-hinged arch parabolic outline. The technique of creation of the universal program in a computing complex of Mathcad for various options of vertical loading is in detail stated. The method of calculation of a three-hinged statically determined arch is considered in detail. The order of design calculation is given in the article. The technique of the automated creation of diagrams of internal power factors of an arch design is offered. A detailed description and analysis of the design scheme of three-hinged arch is given.

Keywords: three-hinged arch, statically definable arches, arched structures, parabolic outline, diagrams of internal power factor

The article describes the main stages of development of the rationing system, as well as foreign analogues. The development of the rationing system and their development potential are described.

Keywords: rationing system, production efficiency, competitiveness, modern standards

Creating a comfortable acoustic climate and an enabling environment for listening to music and speech is crucial in the acoustic design of home theatres. The main requirements for the acoustics of home theater halls are low background noise, diffuse sound field, no echo and optimal reverberation time. The reverberation time is calculated in a certain order. The acoustic mode of the home theater room is assessed in the process of acoustic design.Then the acoustic cladding and electroacoustic equipment are selected. The acoustic system and loudspeakers of a certain orientation are selected depending on the size of the room and the frequency of sound reproduction.

Keywords: acoustics, sound, sound field, home theater, reverberation time, sound absorption coefficient, sound absorption area, acoustic systems, loudspeakers

The article proposes a method for assessing the level of integration of the building structures of the territorial complex, taking into account the demonstration of the diversity of levels and links of management of the conditions of cooperation and combination with changes in the indicators of manageability of structures. An integrated assessment of the level of controllability is proposed for the purpose of subsequent selection of the most reliable contractor.

Keywords: territorial building complex, controllability, building capacity, contractor structure, management method, organizational structure, cost price

The article provides a rationale for the design and technological parameters of barns, which are fundamental in their construction. Design features of the building and the principles of the organization of the maintenance of cows in them are given and described. The design and technological parameters of barns, providing optimal conditions for keeping cows with their loose housing, are noted.

Keywords: loose cowshed; cowshed; parameters; row; type; aft table; manure; stalls; efficiency

The differential thermal analysis (DTA) necessary for the study of structural changes in dispersed silica – flask occurring at elevated temperatures is carried out. A comparative analysis of the results of electromicroscopic studies, showing the dependence of the structure of the surface of the flask on the temperature treatment. It is considered that the defining characteristic of the natural sorbent-flask in the process of wastewater treatment is its specific surface area and porous structure. The influence of calcination temperatures on the adsorption properties of the natural mineral – flask is considered.

Keywords: adsorbent, dispersed silica, differential thermal analysis, flask, adsorption properties, waste water, calcination, purification, temperature, adsorption

The article presents the results of calculations and selection of a set of construction machines for the development of soil in the pit. In the course of the work, a comparative analysis and selection of the most cost-effective option was made. The results showed that the parameters of the selected technology may not coincide with the recommended.

Keywords: set of machines, technical and economic indicators, organizational and technological solution, efficiency, earthworks, soil groups, intensity of work, technological cycle, duration of earthworks, the cost of production of earthworks

The possibility of using European standards, manuals and manuals for the calculation of elements of nodes of frame structures according to criteria that have not been reflected in Russian standards today is being considered. Numerical methods have been used to analyze the bearing capacity of frame nodes for various combinations of longitudinal forces and bending moments. The formation of residual plastic deformations in the elements of the nodes of the frame structures is considered. The nodes were calculated using the ANSYS software package, and a comparative analysis of the calculation results according to European and Russian standards was performed based on the results of the calculation. The question is raised about the need for further numerical studies of the work of steel frame assemblies, including the conduct of field tests, as well as the development of new methods for calculating frame assemblies with regard to plastic deformations. As a result of the calculations and calculations, the need to take into account the fatigue survivability of steel frame assemblies is established, which is associated with the probability of the occurrence of full design loads for the design life

Keywords: European standards, calculation of steel elements, nodes of frame structures, bearing capacity, plastic deformations, fatigue survivability, low-cycle design loads, full design load, redistribution of internal forces, flexibility of rigid nodes

In the article, affecting of anthropogenic factors is considered natural environment of municipal territories. The variants of equipping with modern amenities of sanitary-hygienic zones of enterprises offer by planting of greenery.

Keywords: Key words: noise, pollution with gasses, motor transport, green areas, sanitary protection zone, tree-shrub vegetation, species composition

Reviewed by hydrological and hydraulic processes on reclaimed territories and quantification of their manifestations, methods of artificial modification of hydraulic regime of irrigation. Mathematical description of the regularities of the characteristics of the flow of water in the artificial stream (furrows), interaction of water flows with side slopes and bottom grooves. Hydraulics of irrigation considered with the use of water and heat balance on the basis of monitoring of water Wednesday in furrows, since irrigation furrow irrigation water needs perfectly due to large evaporation losses and uneven absorption of soil. Describes how to mathematical calculations, irrigation norm that must be strictly followed to conserve water for irrigation by furrows. Application of polyethylene film perforated screen will provide the necessary moisture throughout the season. Offered the most effective modalities and agrotechnical recommendations.

Keywords: Hydrology, aeration, irrigation, irrigation norm, perforated polyethylene cover, wetlands, luzheobrazovanie, moisture content, slopes, capillaries, water volume, furrow. Keywords: aeration, irrigation, vegetation, irrigation norm, perforat

The abstract briefly describes modern architectural and planning tools to improve the powerefficiency of industrial buildings. The developments of the Soviet industrial architecture and current European trends are recorded. The features of climate in the South of Russia are considered. The perspective tendencies of increase ofpowerefficiency of industrial buildings are formulated. Examples of the use some of constructive methods and means of improvement of territories for increase of powerefficiency of industrial objects are presented

Keywords: industrial architecture, economic factors, energy efficiency, environmental friendliness, flexible planning solutions, functional mobility, additional engineering systems

The article deals with the principle of emulsion formation in mechanical absorbers, where the working body is presented in the form of a rotating cylinder. The analysis of interaction of liquids in the process of emulsion formation is made. The mutual influence of liquid layers is considered. The estimation of internal and external parameters characterizing the process of emulsion formation is obtained. The study given in the article will help in the preparation of engineering methods for calculating the operating and design parameters of devices.

Keywords: absorber, emulsion layer, viscosity, density, emulsion, surface contact area, energy dissipation, immiscible liquids, rotating cylinder, liquid

The question of the spatial and temporal forms of the architectural composition of urban development is considered. The philosophical and technical problems of using architectural forms and styles are solved. Revealed current opportunities for improving modern architectural composition. The concept of “time” in architecture is also used in various semantic evaluations. This meaning is often determined by the length of time, by which we denote large historical rhythms determined by social processes (alternation of social formations, change of styles in art); seasonal and daily rhythms determined by natural cycles that are the basis of all time measurements; periods of internal changes in the architectural form and, finally, smaller divisions - rhythms in the activities and perceptions of people). Within each time interval, in turn, certain changes are highlighted - the initial, the climax and the completion. Discrepancies between different time cycles at the same and in those spatial boundaries lead to different contradictions: between the periods of moral and physical aging of the building, between the time flexible function and the rigid spatial structure, between changes in natural climatic conditions and stability of the building envelope. The desire of architects to solve contradictions, to provide the most flexible flexibility in the function, to extend the moral life of the object - reflect the various theories of mobile architecture. Such developments emphasize the need for project-based time factor or “time design”. This article is useful to future architects for the formation of modern thinking about architecture, and architects with work experience who need to improve themselves as specialists.

Keywords: construction organization, construction economics, architecture history, construction industry history

The work is devoted to the problem of production of heat exchangers of the "pipe-edge"type. The task is relevant, because today a large number of companies produces and repairs finned heat exchangers. A review of the existing methods of finning, among which, the most effective at the moment is considered to be high-frequency current finning. Considered and analyzed the advantages and disadvantages of each method of industrial finning tubes.

Keywords: heat exchanger, finning, cross-screw rolling, contact welding, arc welding, high frequency currents