The purpose of the study, which this article is limited to, is to analyze the violations committed during the installation of precast concrete goods of a residential building, the place where errors occurred and their causes, and analyze the consequences of violation of the technology for erecting the supporting frame of a residential large-panel building. To achieve this goal, it is necessary to study and analyze the main technological actions and in the process of operational quality control, to identify the places of occurrence of technology violations.On the example of a large-panel residential building, the problems of the quality of work during the construction of the aboveground part of the building are considered. The drawbacks of the constructive solution of external wall panels and joints between them are revealed. The main mistakes in the production of work are considered, at what point in the production of work they arise, and what they will lead to in the future. An example of operational construction control of the installation of load-bearing structures of a large-panel residential building is given.An analysis of errors in construction and installation works was carried out, conclusions were drawn and proposals were made to improve the quality of work during the construction of a large-panel residential building.

Keywords: panel house building, quality of construction and installation works, PIK, construction of residential buildings, violation of technological processes, production, construction, quality control

This article discusses various options for carrying out construction and installation works during the technical re-equipment of energy-processing equipment in the building of the Main Building of the existing CHPP. The methods of installation of large-sized equipment to the design mark are studied by three different methods with a description of the features of the work and the characteristics that affect the cost of the work. The enlarged schedule of construction and installation works on technical re-equipment of the boiler drum is given.

Keywords: thermal power plant, technical re-equipment, construction and installation works, technological equipment, large-sized equipment

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

A method for remote determination of the angular velocity of rotation of the blades of a wind generator based on digital processing of the video stream of this wind generator is considered. The main problems that are encountered with this method of measuring angular velocity are analyzed. The considered method for determining the rotation speed of the blades of a wind generator is possible provided that the frame rate is several times greater than the determined rotation frequency. The minimum possible error of this measurement method was found; the real error of measuring the angular velocity was calculated on a specific example.

Keywords: digital processing of the video stream, image stabilization of the wind generator, finding the contours of the rotor blades, estimation of the angular speed of rotation of the rotor

An idea is introduced of the directing structures of the director and reflex types that contribute to the formation of air flows, which in a given way contribute to an increase in mechanical power on the shaft of its rotor. These structures can be used to amplify the moment on the rotor shaft by increasing its useful interference with the stator. Qualitative considerations about the influence of the introduced guide structures are confirmed by the introduction and numerical aerodynamic calculations of two modernized designs of a promising vortex wind power installation, considered in the previous works of the authors. The most optimal variant of rotor modernization was selected, which made it possible to increase the power on its shaft by an average of 45% relative to the corresponding power for the design of a wind turbine with an initial rotor shape in the operating range of wind speeds from 1 to 12 m / s. The materials of this article can be used to design the optimum aerodynamic power criterion for the rotor of wind power plants, their stations, as well as integrated power power plants, including a wind power plant as one of the renewable sources of energy.

Keywords: wind power installation, airflow structuring, director-type guide structure, reflex-type guide structure, vortex structure, rotor aerodynamic torque, aerodynamic optimization by the criterion of maximum power, numerical aerodynamic calculation, sliding gr

This article describes the method of dust emission suppression at a construction site. The results of the effectiveness of the developed equipment, fog formation gun, were obtained in the course of full-scale measurements in the course of stone installation works at the construction site in Rostov-on-don. The assessment of the air dustiness of the builder workplace and the degree of impact of the fog formation gun were attended with the statistical dependence of the number of dust particles PM2.5-PM10 . During the analysis, the following factors were studied: the location of the workplace at the construction site, the relative humidity and temperature. During the study, the following conditions were met: the premises were closed; the study was carried out in the process of performing stone installation works. The results of the experiment showed the effectiveness of the fog gun.

Keywords: environmental safety, fine dust, dust settling, dust suppression, ecology in construction, dust collectors, construction work, air protection, labor protection in construction, dust pollution

The article deals with methods and models for solving expert problems that allow to avoid the possibility of negative consequences arising as a result of non-compliance with the performance indicators of the project initially set. The current state of the issue of variant study of expert situations is described. The existing mathematical models allowing to solve the majority of expert problems, irrespective of a type and level of initial information are resulted, and also the argument that the choice of a method is caused by presence and level of initial information is resulted. The algorithm of actions of the expert-Builder at the decision of a problem of an estimation of variants of design decisions of installation of special constructions is presented.

Keywords: evaluation of design solutions, installation of special equipment, expert Builder, design solutions, multi-criteria assessment, organizational and technological solutions

Installation for the preparation of emulsions and suspensions refers to devices intended for the preparation of disperse systems. It can be used in the synthesis of polyhydric alcohols and other organic and organometallic compounds, where the immiscible liquids interact. The installation comprises a hydraulic jet mixer pump connected to the outlet of a hydromechanical dispersion pump. The installation comprises one or more components of the dispensing systems, each of which consists of a supply container and the dispenser. Technical result of the installation is created by intensifying the process of mixing and improving the quality of the final products.

Keywords: technological installation; emulsion; suspension; preparation of emulsions and suspensions; intensification of heterophase processes

The paper deals with the problem of measuring device micro consumption. A measuring module has been developed for solving this problem. The module is included in the measurement setup for which the measurement procedure is given. As a device under investigation, a metering device for hot and cold water is used. A technique has been developed for estimating the maximum operating time of a device with a pulsed current consumption.

Keywords: micro current consumption, measuring circuit, instrument amplifier, zero drift

The article provides a systematic review of measures to improve the quality of installation work. The question of improvement of installation works of building structures is studied. A set of tools for improving the quantitative assessment of installation work is proposed.

Keywords: organization of construction, quality management

This article deals with the issue of the installation of traffic lights on the urban road network. A technique has been developed to select the method for controlling pedestrian traffic lights, and a model has been proposed for determining conditions for regulating pedestrian and traffic flows depending on intensity. The installation parameters of traffic and pedestrian traffic lights

Keywords: светофорные объекты, заторовая ситуация, пропускная способность, методика управления движением, безопасность движения, регулирование транспортных потоков, эффективность дорожного движения, аварийность, экологическая безопасность, интенсивность движения

The article discusses the results of the development of the installation, which allows to ensure the process of purification of multicomponent wastewater containing organic impurities of the phenol series based on the combined method in a single apparatus, consistently combining the ozonation process with the sorption purification of oxidized wastewater, ensuring the continuity of the process and allowing the reuse of residual ozone, which greatly increases the degree of wastewater treatment and eliminates the need for the destruction of ozo on. The degree of purification achieved in this way allows the treated wastewater to be directed to the circulating water supply. The novelty of the task and the lack of available information about the combined process determined the nature and scope of experimental studies. There was a need to develop an apparatus that provides the process of purification of wastewater containing mixtures of organic compounds of the phenol series, consistently combining the process of ozonation with sorption purification of oxidized wastewater, ensuring the continuity of the process. The achieved degree of purification allows directing the treated wastewater to the circulating water supply.

Keywords: multicomponent wastewater, wastewater treatment from organic compounds of the phenol series, ozonation, sorption, adsorption, oxidation-sorption column

The question of the device of the bases on preliminary condensed basis is considered. Measures are proposed to ensure the reliability and durability of the structure, taking into account the experience of construction in the USSR. Measures of increase of efficiency of construction are considered.

Keywords: organization of construction; economy of construction, soil strengthening, foundations

The article considers the device for experimental and laboratory testing of microclimate systems. The device is an experimental setup in which it is possible to study the microclimate parameters of multi-functional and multi-level buildings by modeling various processes and their location in the total volume of buildings. Accordingly, with the help of this test model, the parameters of the movement of contaminated air masses and convective flows are studied.

Keywords: test model, installation, microclimate, multi-functional multi-level buildings, process modeling, air, convective flows

Examined the effectiveness of using aeration-lighting installation in the process of biological wastewater treatment.

Keywords: biological filter, biological treatment, energy efficiency, water treatment, lighting, aeroblast, biomass, activated sludge, microorganisms, aeration tank, aerator