The purpose of author's researches - assessment of level of pollution by fine particles (PM10, PM5, PM2.5, PM1, PM0.5) of atmospheric air in territories of parks in Volgograd. Due to the fact that the parks operate year-round, research was carried out in the winter, spring-autumn and summer periods of the year. Research, in particular, was carried out in two parks located in the central part of Volgograd, where there are no industrial enterprises, and are adjacent to one of the largest city highways. Analysis of the particulate composition and mass concentration of fine dust in atmospheric air was performed using microscopic analysis and using Handheld 3016. At the same time, the temperature and relative humidity of the air, wind speed and atmospheric pressure were measured. Measurements were made in places with the largest concentration of visitors to the park at an altitude of 0.5 m, 1 m and 1.5 m, i.e. in the breathing zone of children, adolescents and adults. In the air environment on the territory of the surveyed park zones of Volgograd, there is no excess of the MPC in the atmospheric air for suspended matter RI2.5 observed, but there are cases of significant excess of the average annual and average daily MPC for RM10 particles.

Keywords: atmospheric air, park area, fine dust, maximum permissible concentration (MAC), dispersed composition

The article presents a study of the existing practices of the use of toll roads on Federal highways of the Russian Federation, with the designation of the main advantages of users of toll roads and road facilities defined primarily by saving operating costs (transport costs) when traveling on a toll road, by reducing the consumption of fuels and lubricants, tire wear, repair costs and costs for other items of operating costs, and also saving of time of delivery of freights and passengers increase of comfort and safety of the movement

Keywords: a toll road, the toll gate, efficiency, savings, vehicle, the alternative road

The article presents a comparative analysis of dust pollution of atmospheric air of Volgograd and the city of Kabul. Given the dynamics of changes in the concentration of fine dust in the course of the year for these cities, and also investigated the characteristics of the concentration distribution

Keywords: air, fine dust, PM10, PM2,5, concentrations, meteorological parameters, normal distribution, logarithmic-normal distribution law

V stat'e rassmatrivajutsja problemy zhelezobetonnyh proletnyh stroenij dlinoj menee 35m. provoditsja analiz otechestvennyh i zarubezhnyh balok proletnyh stroenij, pri analize uchityvajutsja takie harakteristiki balok kak, ves konstrukcii, mezhremontnyj srok sluzhby proljotnyh stroenij, rastjagivajushhie naprjazhenija, vosprinimaemaja nagruzka, dolgovechnost', sul'fatostojkost' balki.

Keywords: tipovoe proektirovanie, balki, zhelezobetonnye konstrukcii, proljotnye stroenija mostov, tipovoj proekt, ramno-nerazreznoj, mosty, nagruzka, mezhremontnyj srok, prochnost', dolgovechnost

The article presents an analysis of the causes of the defects affecting the bearing capacity of the bridge superstructures. Produced rough calculation of weight load time, which led to the defect data.

Keywords: " defect analysis, span, load, weight, diagram, method of elastic supports, checking flight, the estimated vehicle.d economic purposes of a diversification, technological purposes of ensuring flexibility of production"

This article describes a way of reducing dust emissions of pollutions exhausted in the atmosphere in the manufacture of building construction materials (expanded clay aggregates, asbestos cement, etc.) applying by approach of desire and the development of precipitators. This promising method based on the results of analysis of variance expanded clay dust, and other building materials proposed generalized approach to the definition of the hydraulic size (effective size' diameter) of dust particles. Proposed method was tested and applied in practice to determining the functional dependence of the integral (cumulative) distribution of dust particles on the equivalent size (effective size). It was mentioned to need to make rationing (norm of containing) dust РМ2.5 и РМ10 fractions in exhausting emissions of pollutions of building construction materials in atmosphere based on the results of analysis of variance volume' data fractions of dust РМ2.5 и РМ10. It is reasonable to use the results of analysis of variance for determination and evaluate equivalent size of dust particles for modeling dispersion and stratification in atmosphere. There described a practical way to determine the critical (minimum) is equivalent to the size of dust particles, maximal potential degree of dust separation in trapped dust cleaners (cyclones, inertial collectors and etc.) from powder and gases flows in decreasing dust aspiration and ventilation schemes in this paper. It were presented some principles of the development of new designs and highly efficient dust different kinds of precipitators (cyclones, inertial collectors) with significant meaning' of separation' degree using the results of analysis of variance of captured dust.

Keywords: Dust, dust collector, the degree's separation, analysis of variance, expanded clay, building material, hydraulic size, equivalent diameter, system, aspiration, dust removal, emissions, atmosphere.

This article describes a way of reducing dust emissions of pollutions exhausted in the atmosphere in the manufacture of expanded clay aggregates and building construction industry, production of building materials using high effective dust cleaners. There described a promising approach to determining the actual size of the particles of dust emission building industry and construction in this article. It was proposed a common generalized approach to determine the actual effective or hydraulic sized dust particles. It could be done based on the on the results of analysis of variance (ANOVA) for expanded clay dust and bulk building construction materials. The development of new dust collectors with a high degree of separation, as a method to reduce dust emissions decreasing dust separation systems of aspiration scheme in the production of construction materials exhausted in the atmosphere. It was shown so that the hydraulic size of dust particles should be taken into consideration for design and account of dust separation devices. It was disclosed a practical method of estimating the effective value of horizontal cross-sectional area of projection of the dust particles. There presented one of the ways for numerical determination of hydraulic equivalent of particle size particle’s size in this paper. The results of this research should be considered when developing new designs of highly effective precipitators using ANOVA results of captured dust.

Keywords: dust, dust collector, degree, separation, dispersive analysis, expanded clay, construction material, hydraulic size, equivalent diameter, system, aspiration, dust removal, emissions, atmosphere

In article results of pilot studies according to influence of dust emissions in the atmosphere from sources of asphalt concrete plants on concentration and fractional composition of dust are given in atmospheric air. The obtained data testify to insufficient efficiency of actions for decrease in the pylevydeleniye in environment applied now at the considered enterprises. The assessment of necessary fractional efficiency of a pyleulavlivaniye in the conditions of the operating production is carried out.

Keywords: dust, dust emissions, organized source of emissions, concentration, fractional structure, fine particles, fractional efficiency

The results of experimental studies to assess the effectiveness of the proposed installation of the dust swirling devices HICP designed to reduce dust emissions in the production of aerated concrete.

Keywords: efficiency, leakage, suction from the hopper, speed, pressure loss, the generalized coefficient

The most important problem of the city is that of economic entities with emission sources, developing projects of maximum permissible emissions (MPE) on their own sources of emissions, and the effect of summation of pollutants from all sources combined into the atmosphere of the city today moment, unfortunately, has not been investigated. An inventory of sources of emission of pollutants into the air, the optimization of observation posts and conduct the calculation of the dispersion of pollutants in Volgograd help to display detailed picture of air pollution in the city. Some problems in the development of a consolidated draft MPE invited to use the balance sheet liability method of pollutants in the city.

Keywords: pollution, the project of maximum permissible emission inventory of emission sources, pollutants, background contamination, the observation posts, balance method, rate limitation of the volume of seizures of oxygen

  The main influence factors on the long-term cracking resistance of asphaltic concrete pavement reviewed in the article. There is offered the indicator of long-term cracking resistance and calculating experimental method of minimum quantity defining of cycles of asphaltic concrete stressing till crack formation in compliance with climatic conditions and traffic load. The results of the comparative analysis of long-term cracking resistance of different asphalt concrete are advised.

Keywords: weather-climatic factors, dynamic influence, indicator of long-term cracking resistance, estimation long-term cracking resistance of different asphalt concrete

The paper proposes a mathematical model of inter-symbol distortion compensation data transfer status RAT distillation devices using vector-matrix transformation. 
Keywords: mathematical model, the inter-symbol distortion distilleries RAT operator transfer and interaction Preemphasis vector.

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