The development of a methodology for the formation of an estimate of a construction object on the basis of its information model is considered, taking into account the state of development of software systems for BIM modeling and the peculiarities of regulatory regulation of the construction of construction projects in Russia. The factors that limit the possibility of drawing up estimate documentation for the information model have been identified. Taking into account the identified limitations, a set of operations necessary for the formation of an estimate for a construction object based on its information model is presented.

Keywords: BIM, 5D BIM-model, estimate documentation, civil and industrial construction

The article describes the main technological features of strengthening subsidence soils by cementation. The features of quality control of work on strengthening arrays of subsidence soils by cementation are considered. On the example of a multi-storey residential building exposed to uneven deformations, the reasons for the violation of technologies during the strengthening of the foundation soils are analyzed. The results of laboratory and field tests of soils are analyzed as part of a re-examination of the foundations fixed by the cementation method during the construction of a multi-apartment three-section residential building. The actual results of laboratory tests are compared with the values set by the project. The diagrams of the location of pits near the building are given. The photos show the presence of cement veins. The causes of uneven deformations of the newly erected object have been established based on the results of a laboratory study of the fixed subsidence soil. It is noted that strict quality control of work on strengthening subsidence soils will allow avoiding emergency consequences during the construction and operation of buildings in the future.

Keywords: cementation of soils, subsidence soil, artificial strengthening of soils, injection, geocomposite, armoelement, drilling, testing of soils, construction control

The construction industry is considered to be one of the most unsafe industries, and as a result, safety in the construction industry is considered a very important factor. To reduce the number of accidents and monitor workers at a construction site, the article suggests integrating new tracking and communication technologies. The authors analyze the existing similar technological solutions, identify their advantages and disadvantages. A method for organizing monitoring of workers at a construction site using mobile devices is proposed, as well as the architecture of a software and hardware complex. The developed method is a smart system for a mobile device. This solution allows you to monitor the location of workers using a GPS tracker and a built-in accelerometer, and, if necessary, notify them of a possible danger.

Keywords: construction site, accidents, safety in construction, employee monitoring, mobile application, geolocation

Reducing the consumption of heat resources in construction and housing and communal services is one of the key tasks solved by design engineers. The increase in the thermal protection of buildings is determined by regulatory documents, but construction customers often require it to be strengthened without any feasibility study. The objective of the study is to develop a graphical-analytical model, the analysis of which allows you to choose the most optimal combination of heat resistances of the coating (walls) and translucent structures of a particular building object.

Keywords: energy-saving project, thermal protection of buildings, "indifference" curves, the method of the fastest descent

With the increasing depletion of forest resources in buildings of normal and reduced class of responsibility for wooden structures belonging to the 2nd and 3rd classes of functional purpose, the possibility of using round timber and sawn timber from soft deciduous species such as aspen and poplar should be considered. since aspen ranks second in terms of area of ​​growth among deciduous species and is found almost throughout the entire territory of the Russian Federation. An assessment of the properties of soft deciduous wood is carried out for use in building structures that perceive power effects. The data on the percentage of lignin and cellulose in coniferous and soft deciduous wood are given. The main physical and mechanical characteristics of soft deciduous wood, the calculated resistance of soft deciduous wood for the main types of stress state are presented. The results of a comparative calculation of interfloor structures made of coniferous and soft deciduous wood are presented. It is shown that the use of soft hardwood for building structures will contribute to the expansion of the range of wooden elements against the background of the development of expensive and labor-intensive in the manufacture of glued wooden structures.

Keywords: round timber, sawn timber, soft deciduous wood, physical and mechanical characteristics of wood, design resistance, flexural modulus

The article offers a solution which will enable to reduce dust pollution during earthworks in urban conditions. A special multi-functional mechanism is proposed enabling to perform several important preliminary processes simultaneously - improving an environmental situation on the site of earthworks. The ground surface damping during trench opening and soil unloading from a bucket into a disposal area will make it possible to reduce the fine dust pollution of the air surrounding a work location. The objective of the study is to develop a mechanism reducing the fine dust dispersal when performing trench and pit excavation. The novelty is that a mechanism of special construction has been proposed that can be mounted onto any machine in the construction line.

Keywords: earthworks, dispersal, technology process, trenching, single-bucket excavator, soil disposal area, trench, fine dust, air pollution, РМ 2,5, PМ 10

The paper presents the results of a study of the possible fight against snow drifts in the Murmansk region on the example of an auto-approach to the village of Teriberka. The volume of snowfall is calculated, recommendations are given on climatic data for the region, recommendations are given on possible options for dealing with snow in the Far North regions.

Keywords: snow drift, snow transport, road climatology, motor road, protection against snow drifts, drifting road sections, permanent and temporary snow protection

This article is devoted to the consideration of the possibility of using LED technologies in solving the problems of organizing artificial lighting of the historical part of the urban environment. A unique set of properties of modern LED sources, such as a wide dynamic color spectrum, low power consumption, ease of installation, long-term uninterrupted operation, environmental friendliness of production and operation, chemical and physical resistance to external influences, provides them with a steady demand for solving the problems of street and architectural lighting of historical quarters of the city, emphasizing their originality and uniqueness.

Keywords: artificial lighting, architectural lighting, lighting design, lighting systems, LED, LED technology, energy saving, environmental friendliness

The article discusses the use of geographic information systems (GIS) when choosing a territory for the construction of social institutions. The main parameters for the selection of the territory are given. The influence of the foundation soils on construction, the level and rate of groundwater rise, environmental risk, land use and development rules (PZZ) and service radii of social institutions are considered.

Keywords: geographic information systems, GIS, construction area, social institutions, location assessment

The choice of a method for transporting hydrocarbons from the shelf of the northern seas is an urgent task, necessary for the economic justification of a project for the development of an offshore field. A comparative analysis of existing transportation schemes allows us to take into account both the advantages and disadvantages of possible options, namely, the natural and climatic features of the region, the technical capabilities of contractor organizations, the cost of field development facilities and vehicle rental.

Keywords: hydrocarbons, continental shelf, transport scheme, analysis, tanker, gas and oil pipeline, onshore infrastructure, offshore infrastructure

The article deals with the actual problematic elements of the organizational structure of enterprises in the construction of industrial buildings and structures. Using the method of optimizing the effectiveness of the existing organizational system, the necessity of introducing organizational and technological modules was revealed. An algorithm for optimizing the organizational structure of an enterprise during the construction of industrial buildings is proposed.

Keywords: optimization of organizational structures, organizational and technological modules, modules-stages, optimization algorithm

The properties of fiber-vermiculite concrete composite are investigated. Analysis of the results showed that reinforcement with basalt fibers of the matrix increases the flame retardant properties. The presence of basalt fibers in the composite significantly increases the strength and flame retardant properties of the initial matrix and reduces the thickness of the flame retardant layer. The highest values of bending strength are achieved with a 0.9% reinforcement percentage and a ratio of fiber length to diameter equal to 1444.

Keywords: composite, basalt fiber, reinforcement, vermiculite concrete, dispersed, strength, bending, flame retardant properties, compression, matrix, thickness, percentage of reinforcement

The purpose of this work is to determine the possibility of using a fine fraction (screening) of landfill waste located on the western outskirts of Volgograd as recultivating soil. The following priority indicators were determined in the selected samples: hydrogen index (pH), the content of benz(a)pyrene, petroleum products and groups of elements related to heavy metals: mercury, cadmium, arsenic, lead, zinc, nickel and copper, namely forms extracted with acid and buffer solution and ammonium acetate with a pH of 4.5. Excess of normative values in the samples was noted for such toxicants as cadmium, nickel and copper. The value of the total indicator of chemical pollution Zc without taking into account the toxicity coefficient was 30.03, and taking into account - 46.34, which corresponds to the categories ""moderately dangerous"" and ""dangerous"". It is determined that the small fraction of landfill masses belongs to the 4th class of waste hazard - low-hazard. Direct use of sieving as a soil recultivant is not possible. It is necessary to carry out measures to detoxify it. Due to the presence of components with carcinogenic properties, acceptable detoxification directions are extraction or encapsulation of heavy metals.

Keywords: landfill masses, fine fraction, chemical pollution, hazard class

This article is devoted to the actual problem of using curvilinear. stained glass facades of buildings in a modern urban environment. Stained glass glazing of radial facades of buildings is one of the characteristic elements of modern architecture due to significant advantages, such as reducing wind and climatic load on the building, environmental friendliness, energy efficiency, improving microclimate parameters, increasing artistic and compositional attractiveness, etc. The article considers a set of tasks, the solution of which will allow eliminating the negative consequences of the use of curved translucent structures in the outer shell of the building by taking maximum account of technological climatic, physical and aesthetic factors in the design of modern glazing systems for high-rise buildings with curved facades.

Keywords: translucent enclosing structures, radius facades, climatic load, high-rise buildings, glass unit lensing, focusing, urban environment, energy saving, environmental friendliness

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

Flexible structures typically have low flexible stiffness and a low material damping factor. Mild excitation can result in damaging high amplitude vibration and long recovery times. This can lead to fatigue, instability and poor performance. Vibration control of flexible structures is an important issue in many engineering applications, especially for precise performance in aerospace systems, satellites, flexible arms, etc.

Keywords: natural frequency, flexible stiffness, vibration, Langrange's equation, Euler's method, damping force, beam theory

The factors identified in this article, affecting the increase in the rate of monolithic construction of multi-storey buildings and structures in the winter. Organizational and technical solutions have been established, which must be taken into account when developing organizational and technological documentation. The object of the research in this article is the process of erection of residential monolithic buildings in winter by the high-speed method, the subject of the research is the organizational and technical parameters that affect the speed and quality of construction processes. The practical significance of this work lies in the fact that the results of the study can be used for the rational organization of construction production by its participants.

Keywords: monolithic construction, winter concreting, organizational and technological solutions, high-speed monolithic construction, organizational and technological potential

This paper proposes an algorithm for automatic segmentation of subretinal fluids in the macular retinal layers of the retina. The proposed algorithm is implemented in an integrated development environment - PyCharm, a high-level general-purpose programming language (GPL) - Python was chosen. The proposed algorithm together with other methods of analysis of morphometric parameters of the human retina, which are still under development, will be used for more accurate diagnosis of the stage and degree of retinal damage in age-related macular degeneration.

Keywords: software, image processing, diagnostics, automatic segmentation, macula, retina, age-related macular degeneration, optical coherence tomography

The technology of well cleaning using the KOS-02 complex and a multifunctional tool that has the ability to reciprocate and rotational motion. The scheme of force effect of the cleaning tool is given and the power parameters of the process are estimated.

Keywords: destruction of the face zone, sand plug , equipment for cleaning wells, cleaning tool, flushing technology

In this article, the actual topic of project activities in the framework of the modernization of higher education in Cambodia. In this article, we analyzed the situation due to which among recent university graduates there is a shortage of highly qualified personnel in such areas as agriculture, exact sciences, mechanical engineering and manufacturing. We also studied information about the largest university in the country - Queen Phnom Penh University.

Keywords: higher education, modernization, innovation, Cambodia, Russia