The principles and results of the formation of classification tables "Auxiliary resources" and "Human resources" of the classifier of construction information are considered. The existing world experience of data classification for the development and maintenance of information models (IM) of capital construction objects (CCS) and ways of organizing data associated with the IM: OmniClass (USA), Uniclass 2015 (UK) and Cuneco Classification System (CCS, Denmark). The developed classification tables can be used in the development and maintenance of ССS IM for the identification of auxiliary and human resources, development of process maps and calendar-network planning, for the development of design documentation in terms of construction organization and estimated cost, for cost analysis of investment and construction processes and determination of labor costs.

Keywords: construction information classifier, information modeling, information model of capital construction object, classification system, auxiliary resources, human resources

Based on the experience gained during the use of Autodesk Revit in the design of power supply systems, the authors assess the features of the implementation of the construction of projects in this section that meet domestic regulatory documentation. A comparative analysis of the methods of constructing power supply projects is given, their advantages and disadvantages are revealed, which is important both from a scientific and practical point of view with a small amount of information in this area that does not have an advertising component.

Keywords: Autodesk Revit, BIM, information model, bilding engineering, power supply system, building technology

The issues of preserving existing green spaces and other elements of the natural landscape during new construction are considered. Methods for preserving perennial plantings throughout the entire course of construction are proposed. If it is impossible to save the tree at the construction site, a method of transplanting it to another place is proposed. It is proposed at the stage of design and survey work to identify healthy trees that do not grow on the site allocated for a building (structure) under construction. Then solve the problem of locating the object on the ground in such a way as to preserve healthy perennial trees as much as possible. To do this, it is necessary to carry out the removal of the object to the area, moving it as far as possible from healthy trees. The distance required to protect the tree from external influences during work is equal to the projection of the crown on the ground plus 1.5 m. At this distance, it is recommended to make stationary fences for each tree. A tree transplantation scheme and a method for calculating its weight for the selection of equipment for digging and transportation have been developed.

Keywords: landscaping, construction, tree, tree transplanting, asphalting

In order to determine the general principles for the formation of regional programs for the overhaul of common property in apartment buildings in the territory of the Russian Federation, an analysis of regulatory legal acts of 85 constituent entities of the Russian Federation was carried out. The main section of the regional program is the sequence of overhaul, which is determined by the criteria. As a result of the study, 47 unique criteria for the order of overhaul were identified and systematized, the relevance of the study and the need to improve the overhaul system were confirmed.

Keywords: overhaul, regional program, criterion, territorial development fund, overhaul fund, apartment building, common property, planning, sequence of overhaul, pace of work

A more adequate methodology for assessing the overall risk of untimely completion (construction and installation works - CIW), taking into account the time horizon of risk occurrence and the phenomenon of risk competition from both probability and impact perspectives, is justified. One of the most common problems in construction projects is delays caused by risks. However, existing research on risk assessment and project schedule analysis overlooks the fact that the aggregate risk depends on the sequence of risk occurrences and their interactions. This article presents a decision algorithm and justifies a computational method for determining the risky duration of work in the project schedule. This information is crucial for making adjustments to the schedule and developing effective risk response strategies. In the calculation examples we have provided, we have demonstrated that our approach differs from the classical method.

Keywords: "probabilistic planning, delays, aggregate risk, risk assessment, uncertainty, construction management, quantitative analysis, timelines, investment projects"

The main maintenance of a diversification of production as activity of subjects of managing is considered. being shown in purchase of the operating enterprises, the organizations of the new enterprises, redistribution of investments in interests of the organization and development of new production on available floor spaces. The most important organizational economic targets of a diversification of management are presented by innovative activity of the industrial enterprise.

Keywords: finishing works, construction control, factors of influence, expert survey, residential real estate, construction market

The provisions on the choice of vehicles for the transportation of prefabricated reinforced concrete structures are considered. Transportation can be carried out using general-purpose and specialized vehicles. The existing rules for loading onto road transport are aimed at eliminating the formation of defects in structures. For loading onto vehicles in structures, various devices for slinging are used - mounting loops, holes, or other elements provided for by working drawings for specific structures. Ensuring the safety of transported structures is possible only when studying the complex system "road - vehicle - transported structures". Factors that should be taken into account when calculating for transport effects: type of product (columns, slabs, panels, etc.) and its design features; type of vehicle (column carrier, panel carrier, etc.) with its characteristics; type of road and speed of transportation.

Keywords: transportation, road transport, loading, precast concrete, slab, truss, column, beam

For the design, construction and monitoring of railway infrastructure facilities, as well as for the maintenance of track facilities, it is necessary to have a spatial database relevant at the time of their production, which should be provided with a continuous survey of infrastructure facilities located in the right-of-way. The article considers the possibilities of introducing geoinformation technologies, including high-precision methods of coordinate-time support, mobile laser scanning, into the production processes of design, construction, operation, repair and diagnostics of railway infrastructure. The existing problems of the widespread introduction of mobile laser scanning technology in relation to the shooting of railway objects are shown.

Keywords: geoinformation technologies, high-precision coordinate system of JSC "Russian Railways", mobile laser scanning, geodetic support

In this paper, the analysis of technical solutions in the manufacturing technology of concreted pipes is considered. When constructing underwater crossings, the most reliable and effective method of ballasting is the method involving the use of pipes with a solid concrete coating. Concrete coatings, among other things, provide protection of the main pipeline from mechanical damage, as well as from the effects of an aggressive environment. The compositions of fine-grained concrete for concreting the surface of steel pipes using non-recycled waste of steel wire rope or pipe production are proposed. It has been established that the use of these wastes in certain dosages contributes to an increase in the strength of concrete, high frost resistance while reducing the amount of expensive heavy aggregates.

Keywords: weighting pipe coatings, production waste, fine-grained concrete, strength, frost resistance

In the context of the development of energy-efficient construction production, the issue of eliminating the irrational consumption of fuel and energy resources and regulating their consumption in the course of construction and installation work, including the demolition of an object, has been updated. The article discusses the features of the production of dismantling works in the process of renovation of residential buildings, taking into account the consumption of fuel and energy resources by the main consumers - means of mechanization. On the example of a five-story brick residential building, the total energy consumption during demolition by the method of mechanical collapse and element-by-element disassembly with the preservation of suitable materials was determined, and the relationship between these two options was established. The calculations showed that the consumption of fuel and energy resources during the element-by-element dismantling of all building structures with the preservation of suitable materials for brick heated buildings is 55.3% less compared to dismantling the building by the collapse method; in monetary terms, the energy costs for option 1 exceed the costs for option 2 by 1.55 times.

Keywords: fuel and energy resources, renovation, demolition, dismantling, energy efficiency, building production, elemental dismantling, mechanical collapse

The article considers the use of collapsible road surfaces on temporary roads and develops a method for substantiating the composition of a set of collapsible road surfaces, the use of which will ensure the construction of a section of highway in the most likely conditions, such as entrances to construction sites, as wooden roads and even bridges, approaches to the bridge, detours of main roads during construction. the proposed method of substantiating the composition of a set of collapsible pavement allows you to calculate the composition of the set not only taking into account its weight and size characteristics, but also the conditions of use. The main of these conditions is the uncertainty of the length of the sections of the highway that require the use of the SRDP. In contrast to the existing ones, the proposed method allows to reduce the influence of uncertainty and obtain the composition of the kit, the use of which will ensure the construction of a section of the highway in the most likely conditions.

Keywords: highway, entrance, road surface, bridge, approach to the bridge, construction site, collapsible road surfaces, slab, road construction, method

This article discusses the system of construction control of capital construction objects, its participants and their interaction. Purpose: analysis of the building control system, interaction of its participants, determination of the main factors influencing the functioning of the building control system. Methods: the method of synthesis and scientific analysis was used. Results: the authors identified the main factors influencing the efficiency of the construction control system. Conclusions: the identified main factors provoke a decrease in the efficiency of the construction control system. The prospect of the study is further analysis of the factors to find their elimination.

Keywords: construction control system, interaction of participants, factors

An approach is proposed to determine the parameters of concreting flat massive foundation slabs - the operational performance of the concrete mix supplier, vehicles and concrete pump, taking into account the limiting factors - the intensity of the supply and placement of the concrete mix and the time of overlapping layers. A scheme for determining the overall coefficient of operational performance is proposed. As a result of timing, the values ​​of the transition coefficient from technical to operational productivity, respectively, for a concrete mixer truck with a volume of 10 m3 from 0.54 to 0.65 and 0.41 for a concrete pump truck with a technical productivity of 120 m3 / h, respectively, were determined when concreting a massive flat foundation slab with a volume of 1500 m3 using concrete mix with grade P4 for workability at a delivery distance of up to 50 m. It is proposed to consider a coefficient that takes into account the decrease in the productivity of an autoconcrete pump due to the variability of the concrete mix supply mode as the main reserve for increasing operational productivity. Schemes are given for determining the duration of concreting a structure without technological interruptions, both with an equal thickness of the stacked layers, and with different schemes for assigning the thicknesses of the stacked layers. The inexpediency of erecting such structures with a layer overlapping time of less than 4 hours is shown. The approach considered in the work can be used to select rational methods for concreting such structures in a continuous pattern or with division into temperature-shrinkage blocks and the construction of working joints. The latter scheme, in connection with the problem of ensuring the quality of the seams and the solidity of the structure, seems to be less preferable.

Keywords: concreting intensity, technical productivity, operational productivity, massive flat foundation slabs, layer overlap time, layer thickness

The article describes the conduct of field studies carried out during the overhaul of the cultural heritage object – the building of MBOU "Gymnasium No. 45" to establish rational parameters of injection of cement-sand mortar, the choice of the type and design of injectors and the scheme of drilling injection wells. It is proved that the technical solutions adopted in the soil fixing project are not optimal and do not provide the required quality of work. Recommendations on technological and constructive solutions for fixing soils have been developed and implemented in practice, taking into account engineering and geological conditions, the results of the survey and fixing at the pilot site.

Keywords: subsidence soil, foundation, cementation, injector, well drilling, geocomposite

Complex flows (CFC, CFA, СFP) are calculated using the critical method. A comparative analysis of the methods of complex flows was made, which showed that the CFC and CFP have the shortest duration of the overhaul of the facades of three objects, which is 131 days. Based on a comparison of the options for calculating complex flows by different methods, we can conclude that the CFP method is the most suitable, because the duration of the overhaul is the shortest. CFP is the traditional and most optimal method that ensures the minimum duration of the whole complex of works and is widely used at the present time.

Keywords: complex flows, calculating, methods, duration

The aim of this article is to highlight the role of Building Information Modeling in minimizing the energy consumption of a building. To achieve this, a project was selected in Iraq and the annual energy consumption in this project was determined. Through the analysis of the building using building information modeling, it was found that the addition of some alternatives during implementation effectively contributes to reducing energy consumption . For example, the use of foam Material above roofs reduces the Energy Use Intensity (EUI) to (1,135 MJ/m²/year), Electricity (294,591 kWh), and Fuel (117,587 MJ) , and using Sand Stone in Wall Finishing reduces the Energy Use Intensity (EUI) to (1,116 MJ/m²/year), Electricity (228,898 kWh), and Fuel (496,223 MJ). Through these results, it appears that new materials must be incorporated into the building, as they are of high quality in thermal insulation and reduce energy consumption. By adding the alternative materials above, and from the results that appeared, it was found that these materials reduced the energy consumption of the building by a good percentage and thus obtaining a higher quality of the building by improving its performance.

Keywords: energy analysis of buildings, construction project, Building Information Modeling, analyzing alternatives

This article analyzes two systems of logistics for construction organizations based on the concept of Material Requirements Planning (MRP) and Just-in-Time (JIT). The main advantages and disadvantages of each system were investigated, and which of them are most effective in the current conditions were determined. Possible options for improving MTO systems are considered, as well as recommendations for the introduction of MRP and JIT into the practice of construction organizations to increase efficiency and reduce costs are proposed. The article will be useful for specialists in the field of construction and logistics, as well as for everyone who works in the field of management and optimization of business processes.

Keywords: logistics, Material Requirements Planning concept, Just-in-Time concept, construction project planning

This article presents the results of a study of the process of decompaction of clay soils when they are used in soil structures. To study this issue, the following factors were chosen: the dimensions of the test samples, the amount of load on the samples, swelling when soils are moistened and shrinkage when they are dried, and the loss of strength of the samples during their decompaction was also estimated. All studies with soils were carried out in laboratory conditions. In the course of the research, dependences of relative decompaction on vertical load and changes in shear forces depending on the degree of moisture during decompaction of soils were obtained. The main conclusions of the work are given.

Keywords: clayey soil, decompaction of soils, mineralogical composition, optimal soil moisture content, density of the soil skeleton

The problem of ensuring trouble-free operation of field pipelines is becoming more and more urgent from year to year. The development of deposits in areas with difficult natural and climatic conditions (the Far North, Western Siberia) requires a new approach to improving the reliability of pipeline systems. Along with the search for new technologies in construction and operation, the use of modern composite materials in the production of pipes is a primary task. Analysis of the causes of failures of field pipelines in the permafrost zone allowed us to identify the main ones: corrosion, water hammer, loss of stability as a result of frost heaving of soils. Comparative calculations of steel and fiberglass pipelines allow us to recommend the latter as an alternative to metal pipelines, because they have better corrosion and abrasive resistance, low roughness and thermal conductivity, high ductility and manufacturability.

Keywords: field pipeline, fiberglass, analysis, reliability, permafrost, corrosion, water hammer, loss of stable position, frost heaving

The design of the organizational structure is an integral factor in the formation of any organization, including in the construction industry. The changing operating conditions of enterprises existing in the era of the information revolution directly affect the efficiency of organizations and the entire construction industry. The impact of the latest technologies should be reflected in the planning, organization and control at all stages of the life cycle of a construction object.

Keywords: construction, organization, management, planning, design, organizational structure, virtual structure, virtuality, digitalization, Gartner curve

The article contains statistics on the number of destroyed buildings as a result of emergencies that have occurred over the past twenty years. A table has been formed taking into account the factors of selection of the method of erecting buildings.

Keywords: earthquake, construction technology, factor, selection of construction method

Currently, due to the growing shortage of basic energy resources, the increase in the cost of their production and the presence of acute problems associated with environmental degradation, the integrated use of energy-saving measures and innovative energy-efficient technologies in the construction industry is one of the necessary conditions for the successful development of the country's national economy and maintaining a favorable environmental conditions.

Keywords: energy saving, resource saving, energy efficient technologies, construction industry, alternative energy sources

On the basis of the study, an analysis was made of the capacity of the roundabout according to the existing traffic intensity in the city, taking into account the composition of the traffic flow, the main factors affecting the passage of vehicles at the entrance to the self-regulated intersection are given. The possibilities of reducing congestion within the framework of the existing street and road network of the city are analyzed, conclusions and recommendations are given based on the results obtained.

Keywords: traffic capacity, traffic composition, roundabout, design speed, vehicle spacing, center island, load level, congestion, normalized traffic volume, number of lanes, service level

The relevance of forensic construction and technical expertise in the Russian Federation increases with the increase in the level of urbanization and at the same time the community of forensic construction experts with deep knowledge in the construction field obtained as a result of professional education is growing rapidly. The article raises the issues of lagging the level of preparedness of construction experts in procedural matters, in the skills of mastering the art of polemics, in the ability to flawlessly design the results of the examination in the form of an expert opinion. The authors of the article, based on the study of the practice of conducting judicial construction and technical examinations, analyzed the organizational and legal problems arising from the expert in connection with the violation of the principle of unity of form and content during the examination, underestimating the importance of putting evidence in a strict procedural form.

Keywords: construction and technical forensic examination, special knowledge, forensic expert, examination production, examination procedure

There are a lot of monolithic and precast-monolithic reinforced concrete structures in construction. The relevance of the issue of ensuring reliable contact of concrete in the seams and joints in the contact zone of newly laid (""new"") concrete with already gained a certain strength (""old"") concrete is increasing. In the work, the influence of the pH of the medium on the adhesion strength of ""new"" and ""old"" concrete, which occurs when making joints in prefabricated monolithic structures and organizing technological seams of concreting in monolithic construction, was considered. Standard methods were used. Experimental data have been obtained that indicate the influence of the pH of the ""new"" medium on the adhesion strength of the ""new"" concrete with the base of the ""old"" concrete. The analysis and comparison of the received results with the data of the researches conducted earlier is carried out. Recommendations are formulated to improve the strength of concrete contact in seams and joints during the construction of monolithic and precast-monolithic reinforced concrete structures.

Keywords: new-to-old concrete bonding, technological concreting joint, monolithic reinforced concrete structures, precast-monolithic reinforced concrete structures