The simulation variances of the final volume considerably simplifies the solution of certain problems of reliability. The collection of information for aggregates of large volumes is impractical because of the duration and high cost. Therefore, the analysis and calculation are subjected to a representative sample. To move from sample data to finite volume population parameters, an analytical method for determining the Weibull parameters for the population was used. Analysis of the analytical method for determining the parameters of the three-parameter Weibull distribution for the aggregate confirmed the possibility of using the method of modeling statistical data of strength and life of parts and components of machines. The calculations proved that in practice it is possible to use both the value of the shift parameter and the value of the extreme terms of a number of the population.

Keywords: reliability, analytical method, simulation, General population of finite volume, the sample, the Weibull law, strength, resource, detail, Assembly, machine

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 article conducts a study of the stress-strain state of the protective structure, taking into account temperature and radiation effects. Dry protection is a thick-walled cylindrical shell rigidly clamped at the base. The analysis is carried out in axisymmetric formulation. The calculation of the stress-strain state is preceded by the determination of the distribution of physical fields in the thickness of the structure. The stationary temperature field is considered taking into account internal sources of heat release. The diffusion approximation is used to determine the distribution of the neutron fluence. The calculation is performed numerically using the finite element method in the Matlab package. The results are compared with and without induced inhomogeneity. The significant influence of inhomogenity on stresses in the structure is shown. At the same time, taking into account heterogeneity does not lead to a significant change in displacements.

Keywords: thick-walled cylinders, stress-strain state, numerical methods, neutron fluence, temperature field, inhomogeneity, finite element method

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

The article is devoted to development of information modeling technologies in Russia. The possibilities of using 3D-models, their advantages and disadvantages are conserned.

Keywords: Information modeling, engineering, building operation, real estate life cycle

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 is devoted to the issue of improving the environmental safety of the construction industry by improving dust collectors of dust removal systems for the aspiration schemes of the construction industry/ It was proposed use additive-integrated dispersive analysis of variance of dust particles emissions throw out into the atmosphere by aspiration systems. The article proposes the improvement of complex analysis of variance using hydrodynamic criteria in output functions. Modified output data and additive-simplex allows getting approach to evaluate characteristics - equivalent sizes and speeds of sedimentation-soiling of dust particles with a higher degree of accuracy of the results. It makes possibility to determine the ranges of size’s and velocities’ changes with real ability. It is possible to obtain more reliable data of sedimentation rates and equivalent particle sizes for the studied dust samples of building materials using the distributions of the hydrodynamics criteria. Analytical approach to determining the density’ distribution of the numerical values of the hydrodynamics criteria in the output function allowed us to clarify the more real values of sedimentation rates and the equivalent particle sizes and the range of their changes both. This way analysis of variance of dispersed dust particles could call additive-complex or simplex approach. The obtained regressions in processing the research results were used in the development of devices for capturing dust of dispersed building materials from emissions. This way could significantly reduced dust leakage out from aspiration collectors of decreasing dust systems while purifying emissions at the building enterprises. This approach is one of the most effective ways to improve the environmental safety of the building industry.

Keywords: Dust, building material, dust collector, cleaning, leakage, analysis of variance, velocity, sedimentation, criterion, emission, atmosphere, dust removal, aspiration

The history of the study of the archaeological complex of bi-Khanum swords in Samarkand is considered. The description of the ancient building is given. The methods of construction of the monument are studied, the reconstruction of the ancient appearance of the complex, the materials used and construction methods are given

Keywords: organization of construction; history of architecture, history of the industry

The article discusses the results of a survey of the technical condition of precast reinforced concrete columns of the building of the administrative building of the cotton mill in Shakhty. A calibration calculation for bearing capacity was made taking into account additional loads. Identified extensive damage the main ones are: - destruction of the protective layer of concrete, exposure and corrosive wear up to 10% of the cross section of the working and transverse reinforcement of columns; - cracks in the protective layer of concrete on the surface of the shelves of columns. The technical condition of the building structures of the administrative building for the period of the survey is assessed as unsuitable to the conditions of normal operation (partially operational). A calibration calculation was made and recommendations were developed for restoring the bearing capacity of precast concrete columns.

Keywords: concrete, bearing capacity, reinforced concrete, structures, reinforcement, constant load, strength, operational reliability, deformation, reinforcement

The issue of improving the cost reduction of crane structures is considered. Results of experimental experience of the device of beams of new type are given. Methods of economy of materials at production of beams are offered

Keywords: organization of construction; economy of construction, construction of cranes and crane tracks

The question of economy of metal at production of building designs is considered. Measures for the organization of effective production in the current projects of high-rise and long-span buildings are proposed. Measures of increase of efficiency of construction are considered.

Keywords: organization of construction; economy of construction, production of building materials

Experimental verification of the existing method of analytical determination of radiation and thermal deformations of concretes and solutions on the basis of data on deformations of aggregate and cement stone for materials with low content of aggregates is carried out. The test was carried out on samples of solutions with different content of aggregate-sand based on the results of determining the size changes after heating at temperatures from 105 ° C to 400 ° C. It is shown that at the volume content of fillers less than 52% there are differences between the calculated and experimental values of changes in the size of solutions after heating. Moreover, the differences increase with the decrease in the volume content of the filler, with an increase in the heating temperature and the difference between the thermal deformations of the filler and the cement stone. The obtained results allow to correct the results of calculations using the specified existing analytical method for concretes and solutions with a filler content of less than 52%

Keywords: thermal and radiation deformations, solutions and concretes, analytical and experimental determination, filler content, microstructural stresses, cracking

The transformation of the natural environment will force humanity to look for a new look at the problems of architecture and urban design. Nowadays, the construction of passive houses is a standard, and green roofs are included in the design of modern cities. Therefore, the urban cluster will gradually transform into sustainable bionic systems that will protect nature and stop further degradation and exploitation of public green spaces.

Keywords: bioarchitecture, external environment, architecture, landscape

This article presents a mathematical model of the distributed registry as a Queuing network. The main components of this network, as well as their formal representation are considered. The model of the peer-to-peer network is visualized, the vector of the network state is defined, and the restrictions of the state space are defined. After that, the laws of distribution of individual flows and service time were presented. In addition, the design elements of the infinitesimal matrix were determined. Based on the data obtained, a simulation model of this process was produced. For simulation, the Anylogic package was used. The results of simulation were analyzed and the most optimal parameters were selected.

Keywords: Queuing network, information security, distributed registries, computer science and engineering, mathematical modeling information system, corda

The question of improvement of coatings of welded products is considered. The possibility of replacing sandblasting is being studied. The possibility of reducing the cost of welding is considered

Keywords: construction materials, reduction of construction materials costs