Methods and results of determining indicators of deformation and strength properties of soils using various laboratory test technologies are considered. The research objective is to verify the methodological correctness of the results obtained from tests in a compression odometer chamber with the ability to measure lateral stresses. The relevance of this development lies in the possibility of replacing this device with testing to determine the strength characteristics of the soil in shear devices. The results of tests of fine sand lying at the base of the projected sports and recreation complex at one of the construction sites in Penza are presented. The influence of the used test methods on the obtained values ​​of the strength and deformability characteristics is shown. Correlation indicators are revealed and corresponding conclusions and proposals are given. There is a possibility that the method is valid when some correlation coefficients are used. Therefore, in the future, it is necessary to conduct tests on different types of soils with the possible compilation of tables of conversion factors.

Keywords: sand, laboratory test methods; single-plane cut, odometric tests, strength characteristics, deformation characteristics

Based on the results of engineering and geological survey of real construction sites in Rostov-on-Don and the Republic of Kalmykia, the dynamics of subsidence processes on laboratory samples of loess soil tested for compression according to the "one curve" scheme according to GOST 23161-2012 was studied.

Keywords: subsidence, compression compression, odometer, loess soil, subsidence pressure, surveys, geomechanics, soil mechanics

The article describes the device and principle of operation of the Kurzanov-Semyonov kinematic support. Advantages and disadvantages of this type seismic isolation are also highlighted. In addition, the structural design scheme of the operated high-rise apartment building with and without kinematic support system was created in the Lira-CAD software package (CAE FEA software). Based on the computing results, a comparative analysis of the reaction of the building superstructure block under the influence of wind force in three directions was carried out. It was determined that the wind force does not affect the performance of the kinematic support system negatively.

Keywords: kinematic support (KS), seismic isolation, seismic protection, wind, wind load, Lira-SAPR, finite element method, shift, modal analysis

One of the main directions of Russia's housing policy is the elimination of dilapidated housing stock. Commissions are established to assess the technical condition of buildings to reduce the number of dilapidated buildings in municipalities. At the same time, the number of surveyed buildings is growing every year. There are no special measuring devices in municipalities. It means that method used to assessment of physicaldeterioration should be simple, fast and giving reliable results. There is comparative analysis of the three methods for assessing the technical condition of buildings in this article on the example of the apartment building in Yekaterinburg. The results of the evaluation are compared, the advantages and disadvantages of each method are determined according to the criteria of practical using by specialists of municipalities. Based on this results the need to develop a combined method for determining the technical condition of buildings, taking into account the conditions of the survey, is determined. The introduction of such a method will speed up the process of creating a safe and comfortable living environment for citizens, which will contribute to the socio-economic development of the region and the country.

Keywords: technical condition, physical deterioration, emergency condition, dilapidated residential building, categories of technical condition, methods of assessing physical deterioration, inspection, defect, damage, demolition

The article analyzes the wind impact on buildings and structures, considers the parameters of regional and local winds, the influence of terrain on regional winds, and presents the ratio of wind speed to blowing height. The main aspects of determining wind loads on buildings and structures are considered. The nature of the wind load and its calculation methods are investigated. The problem of further development of the method for calculating wind impact using computer modeling is formulated.

Keywords: wind, buildings, structures, aerodynamics, hydrodynamics, CFD, region, modeling, landscape, hill, valley

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

The article is devoted to the study of heat losses when heating infiltrating air entering through existing leaks, cracks in doorways of walls, gates, and window bindings. Various methods for determining heat loss through enclosing structures are considered. As a result of the thermal imaging study, a method for determining the heat losses for heating the infiltrating air through existing leaks is proposed.

Keywords: air consumption, infiltration, heat losses, leaks, enclosing structures, air permeability, microclimate

It is known that the voids of the soil are able to absorb water at every opportunity, filling the voids of the skeleton with ground water. The article deals with the deformation of soils under compression, accompanied by the movement of water in the voids of the skeleton. The physical cause of fluid movement is the difference of hydrostatic pressures at different points in its volume. This movement is called the length of the filtration line and depends on the filtration rate. The process of filtering water from the voids of the skeleton under variable pressure will determine the course of compression of the soil skeleton in time. Taking into account that water filtration ceases at the end of deformation, it is possible, by comparing the equations, to obtain for these conditions the desired relationship between the time of complete deformation and the soil filtration coefficient.

Keywords: soil deformation, hydrostatic pressure, water-saturated state, water filtration, stresses of the soil skeleton

The paper argues for the relevance of using volumetric modular units (VMU) in construction, especially in building temporary field camps. Despite a high installation technology intensity, the use of VMUs is said to demonstrate a low technology intensity in terms of transport operations. In order to ensure a high transport flexibility for temporary settlements, collapsible volumetric modular units are suggested as a potent solution.

Keywords: modular construction, assembly and transport adaptability, collapsible construction

Development is a necessary component of the processes taking place around us, without which it becomes impossible to improve the quality of our lives. In this article, we will focus on innovations in construction, but only those that are not just an innovation, but rather a necessary component that allows you to bring the process and economy of construction to a higher level, and, simply put, are the engine of development of the industry. So, let's look at a few innovations that, when used in mass production, can significantly simplify, speed up and reduce the cost of building construction.

Keywords: construction, innovation, 3D printing, modular construction, innovative bricks, concrete, plastic, hybrid structures, wood, hollow elements, plastic, composite sleepers, foundations, cladding, aluminum, ceramics, green construction, eco-floating houses

It describes the material CLT, which is used for the manufacture of floor slabs. The required floor thickness is calculated from the condition of rigidity under a load of 2.4 kN / m2 for various spans. The values of deflections are determined from the stiffness condition. The calculated deflection values are compared with the standard values. Based on these results, the recommended floor thickness is assigned for each span.

Keywords: cross-laminated timber, timber constructions, floor, deflection, rigidity

The article investigates the physical and mechanical properties of fine-grained fiber-reinforced concrete with metal, polypropylene and polyamide fibers, using Portland cement, hyperplasticizer. Comparison of strength characteristics of fiber-reinforced concrete made using metal fiber, polypropylene and polyamide fibers is carried out. A technical and economic comparison of the efficiency of using fibers of various origins has been made. According to the cost calculations, the use of polyamide fibers is cost-effective, since the cost of materials is lower than the cost of fiber-reinforced concrete materials based on polypropylene fibers of this composition.

Keywords: fiber concrete, hyperplasticizer, fiber, microsilica, tensile strength, nature of destruction, mechanical property, polypropylene fiber, polyamide fiber, cement, reinforcement, adhesion, monolithic structure, cost

This article is devoted to information modeling of real estate objects. The most suitable option for three-dimensional data representation for managing information about buildings and structures, in time and space, is BIM technologies. When they are used in construction, a detailed model of the capital construction object is created, therefore, such information can become the basis for creating and filling in a 3D cadastre.

Keywords: BIM technologies, information model, 3D format, information modeling, Unified state register of real Estate, general data environment

This work analyzes the methods of dismantling and demolition of reinforced concrete structures, namely: manual, mechanical and semi-mechanical method, drilling and blasting method, thermal method. The main advantages and disadvantages of these methods, the possibility and economic feasibility of their use in the interests of the Ministry of Defense of the Russian Federation are also considered. On the basis of the analysis carried out, taking into account the limitations of the use of the methods, a promising electro-hydraulic pulse method for dismantling reinforced concrete structures was proposed and the necessary conditions for its implementation in industrial mastabs in the interests of the Ministry of Defense were indicated.

Keywords: reinforced concrete, reinforced concrete structures, dismantling, demolition, work safety, efficiency, military infrastructure

The production of Portland cement can be characterized as harmful to nature and human society, resource and energy consuming. The use of by-products of metallurgical and chemical production in obtaining a hydraulic binder is a relevant and promising direction. binder for strengthening and stabilizing the soil of the road base The article investigates the regularities of the initial hardening processes of finely ground slag occurring during structure formation as a result of activation with alkaline solutions and sodium silicates.

Keywords: granular slag, normal density, setting time, activation, awakening of hydraulic activity, binder, hardening

This article discusses the problem of increasing the load-bearing capacity of bored piles. The technology of injecting fixing solutions into the ground under the foundations of a two-story building in the city of Azov to increase the load-bearing capacity of bored piles was described.

Keywords: structurally unstable soil, pile Foundation, load-bearing capacity, soil consolidation, silicatization, camouflage broadening, driving piles, bored piles, screw drilling, concreting

A review article on the development and design of oil and gas fields, in particular on infrastructure facilities such as gas piston and gas turbine power plants, shift housing, and a fire station. Infrastructure is one of the important parts of field development, which includes the construction of roads and various communications, as well as industrial and residential buildings and structures.The construction of the block-modular method is considered in detail, as it is a promising direction in modern construction. The field development itself is a set of construction and installation works and organizational and technical developments. And the design of the arrangement includes the development of project documentation. The oil and gas industry plays a large role in our time, therefore, increasing its efficiency and economic development is one of the main tasks.

Keywords: field, construction, industry, oil, gas, infrastructure, facility, power supply, power plants, block, block-module, technological design

In the joints of wooden elements, obliquely screwed rods are installed in pre-drilled holes. In the absence of glue, the bearing capacity of the joint depends on the design resistance of the wood to chipping along the surface of contact with the thread of an obliquely screwed in rod. The purpose of this work is to assess the change in the bearing capacity and deformability of the joints of wooden elements on inclined screwed rods when glue is added. Samples of joints were tested on screwed-in rods, made with glue and without glue, three samples for each type of connection. It was found that the use of EPTs-1 glue increases the bearing capacity of joints on inclined screwed rods by the criterion of the breaking load by 1.33 times, by the criterion of the upper boundary of the elastic work area of ​​the joint by 1.5 times, at the level of reaching the ultimate deformation Dult = 2 mm - 1.8 times. Full deformations Dp at the same load within the elastic work of the joints are reduced by more than 3 times. Compared to joints on glued-in rods made of periodic profile reinforcement, the consumption of glue is reduced by 6.8 times.

Keywords: connections on inclined screwed rods, glued in rods, wooden elements of composite cross-section, maximum bearing capacity, upper boundary of the elastic work area of joints, deformation of joints

The work is devoted to the analysis of existing and applied in practice methods of strengthening building structures, an assessment is given of the choice of the optimal method for strengthening building structures, the main advantages and disadvantages of these methods, the possibility and economic feasibility of their use in the interests of the Ministry of Defense of the Russian Federation are considered.

Keywords: building structures, reinforcement, bearing capacity, technical inspection, efficiency, military infrastructure

Development is a necessary component of the processes taking place around us, without which it becomes impossible to improve the quality of our lives. In this article, we will focus on innovations in construction, but only those that are not just an innovation, but rather a necessary component that allows you to bring the process and economy of construction to a higher level, and, simply put, are the engine of development of the industry. So, let's look at a few innovations that, when used in mass production, can significantly simplify, speed up and reduce the cost of building construction.

Keywords: construction, innovation, 3D printing, modular construction, innovative bricks, concrete, plastic, hybrid structures, wood, hollow elements, plastic, composite sleepers, foundations, cladding, aluminum, ceramics, green construction, eco-floating houses

This article presents the results of the analysis of factors influencing the burner device of heat generators, as well as methods for their selection. The results of an experimental study of the dependence of the efficiency of heat generators on the operating power of burners are presented. Recommendations have been developed for choosing a heat generator and a burner.

Keywords: heat generator, burner device, Gorenje mode, operating power, heat balance

The main features of the use of facade glazing are described. The advantages, modern and unique technologies are considered. Examples of buildings where facade glazing is used are given.

Keywords: facade glazing, architectural solutions, multifunctional glass, i and iM-glass, tempered, laminated, reinforced glass, framed, frameless facades

This article is devoted to analyzing the requirements for the selection of erection cranes for the construction of high-rise buildings. The construction industry plays an important role in the development of the nation. With the development of advanced technology and the increasing use of machinery in the construction of large construction projects, it has become necessary for the civil engineer to be familiar with the design and application of various parameters that are used in modern construction. On a large project, a contractor may have an assortment of different cranes for different purposes. Material handling is an important part of the delivery process for construction projects, and cranes are the most important resources used to achieve this goal, especially on a construction site.

Keywords: construction and assembly crane, high-rise building, construction, design, construction industry, construction object

The article discusses the most common types of modified columns in Mexico: composite section columns, high-strength concrete columns, prestressed concrete columns. The procedure for calculating columns and new proposals to improve construction efficiency is described. Columns are one of the most important elements of orthogonal frame buildings, so improving their designs requires special attention. In composite section columns, using high-strength concrete in the outer zone, the strength of the concrete located in the core increases 1.5 times more, which significantly increases the efficiency of the structure. Columns made of high-strength concrete have an increase in efficiency when used in high-rise buildings. Prestressed concrete columns are very effective because they have high resistance to load, they are able to withstand significant stresses.

Keywords: concrete, reinforcement, reinforced concrete, high-strength concrete, prestressing, columns, columns of composite section, eccentricity, stress, deformation

Urbanization and increased production have led to the fact that every year the world generates a large amount of plastic waste, which pollutes the environment. Using them in the construction industry will help solve this problem, as well as get profitable solutions in the production of building materials and mixtures.

Keywords: plastic waste, environment, construction, construction materials