Proper cost estimation, monitoring and control is vital to the success of construction projects. BIM projects allow you to facilitate, visualize, and demonstrate work results. In the estimate documentation, BIM technologies also allow you to improve the process of working on a project. The article discusses the advantages of using BIM - programs for making estimates on the example of Avtodesk Revit and 5D estimates, indicates the main stages of work in these programs. Fewer errors and less lead time are key factors for integrating these technologies into construction pricing.

Keywords: BIM, estimate, 5D смета, construction, design, pricing

The paper presents the research results of the influence of materials, which change a phase on the exterior surface of the outer shell, on forming of the heat flow mean value for one year, calculated on change of the exterior temperature per every three hours. The correlation between heat flow and characteristics of the phase-change material was studied. Such materials increase heat lag of the outer shell and allow reducing the amount of electric energy required to keeping of indoor climate. The paper presents the research results of the influence of materials, which change a phase on the exterior surface of the outer shell, on forming of the heat flow mean value for one year, calculated on change of the exterior temperature per every three hours. The correlation between heat flow and characteristics of the phase-change material was studied. Such materials increase heat lag of the outer shell and allow reducing the amount of electric energy required to keeping of indoor climate. Based on the implementation of the method of math planning of experiments the sufficient math model of the dependence of the heat flow density on the material coating thickness, latent heat of transition, heating capacity value and thermal conductivity before and after phase change was made. The mathematical model coefficients were interpreted and best values of very factors based on desirability function were determined. Based on these data the selection of the material with phase-change temperature of about 0 0C for Krasnoyarsk was made.

Keywords: energy efficiency, heat flow, heat saving, heat-storing material, phase-change heat storing, phase-change material

The influence of grain composition and active mineral addition of microsilicasuspension on properties of dry concrete mix was considered. The selection of the method of production of paving slabs with allowance for technological modes of vibropressing technology was made. The optimum dose of microsilicasuspension, having positive effect on the concrete quality, was defined.

Keywords: grain composition, dry mix, process of hydration, microsilica, paving slabs, heavy concrete, compressive breaking strength, abrasion capacity

This paper presents two methods of computer simulation (quantum chemical analysis and molecular dynamics) of the interaction of additives with the iron surface. Quantum chemical interaction of silicate and phosphate additives with iron surface was carried out. The plate model was used for quantum chemical analysis, calculations were carried out in the DFT approximation. The method of molecular dynamics is based on the calculation of the evolution of the system of interacting particles of atoms and molecules by integrating the equations of their motion. It is shown that the oxidation of the surface leads to a decrease in the adhesion energy of both individual additives and their combinations, allowing to find the influencing factors on the behavior of tribosystems.

Keywords: lubricant, method, quantum chemical analysis, molecular dynamics, tribology, friction, computer simulation

Many complex oxides of transition metals show effect of enormous dielectric permeability. New complex layered oxides LnSr2CuTiO6,5 (Ln = La, Nd, Pr) are synthesized. Their structure by means of x-ray diffraction on the Shimadzu XRD-7000 S is investigated. Processing of XRD was carried out in the program FULLPROF-2013. The main X-ray reflexes are indicated in space group I4/mmm (№ 139). The data of the crystal-chemical analysis which are carried out taking into account a charge state and coordination environment of cations show that distortion of coordination polyhedrons is significantly reduced in series Ln = La→Nd. The unit cell parameters naturally decrease according to reduction of ionic radiuses of La→Nd. Dielectric properties of materials investigated using the universal analyzer of a frequency response Solartron 1260A in the range of frequencies 1mHz - 16МHz with a signal amplitude 500-900 mV. Increasing the dielectric constant is possible due to the charge ordering caused by uneven distribution of charge. Frequency dependences of an imaginary and real part of dielectric constant are given.

Keywords: dielectric constant , complex oxide, transition metal, perovskite, x-ray diffraction, microstructure, crystal-chemical analysis, impedance- spectroscopy, charge ordering, coordination polyhedron

The work contains the construction and software implementation of related software systems designed for mathematical modeling of processes occurring in coastal water systems. The space-two-dimensional model of sediment transport in shallow waters allows to forecast the dynamics of bottom topography changes by reason of the movement of water and solid particles, to take into account the porosity of the soil, the critical shear stress at which begins the movement of sediment, turbulent exchange, dynamically changing geometry of the bottom, wind currents and friction on the bottom. The mathematical model of motion of a multicomponent air, takes into account factors such as the transport of pollutants and heat; the effect of vegetation; change in the coefficient of turbulent exchange; water transfer from the liquid to the gaseous state and others.

Keywords: multiprocessor computer system, grid equations, suspended solids, sediment

Discusses the use of the property of the integrity of the systems, in aspects of building functional structure and build a hierarchy of goals in the analysis of technical systems

Keywords: system analysis, integrity, conceptual design, basic design stage, functionfl scheme, the hierarchy of goals, dualism, unity and struggle of opposites

  The algorithm of the research, including the technology of making the mycelium film on the resonator of bulk acoustic wave and gas medium with the given concentration was developed. As a result of the investigations the sorption sensitivity of extracts of the higher shiitake mushroom mycelium to the fume of volatile liquids and gases (acetone, ethyl acetate, formaldehyde, chloroform, acetic acid and hydrochloric acid, hexane, 10% aqueous ammonia) was studied. The study has shown that there are the processes of making the mycelium films, which keep the initial values of the resonant frequency and the quality factor of the resonator after moving off the fumes or gases. This work has shown that the mycelia films are very promising as a new material for gas selective coatings of electro acoustic sensors.

Keywords: mycelia films, flying liquids, gases, gas electro-acoustic sensors

In article it is spoken about use of logistic approach at tariff setting on city passenger transport

Keywords: Logistic approach, tariff, tariff setting, passenger transportation, passenger transport

In article it is spoken about use of logistic approach when forming the principles of tariff policy of city passenger traffic

Keywords: Logistic approach, tariff, tariff setting, passenger transportation, passenger transport

The work is devoted to modeling sediment transport in shallow waters. Results of mathematical and numerical modeling can be applied in practice to justify the design and construction of hydraulic structures to predict the formation of the bottom topography (eg predicting sediment transport), to address issues related to the protection of the recorded ports and channels, weather impacts to the design, to determine the optimal routes maritime access channels, etc.

Keywords: mathematical modeling, hydrodynamics, transport of substances, the Navier-Stokes equation of diffusion-convection-reaction

 Quality of services of public passenger transport depends on many indexes. Reliability and regularity is important indexes of quality of public passenger transport. The example calculation of reliability is considered. Conclusions on reliability and regularity of routes are done  

Keywords: quality, public passenger transport, regularity, reliability

  The paper calculated the optimum rate for passenger transportation. For this level of the tariff should not exceed the maximum rate and be lower than the minimum rate. Maximum tariff reflects the interests of passengers, the minimum interest transport companies. Thus, in determining the optimal tariff for passenger transport into account the interests of all parties: carriers, passengers and local authorities.  

Keywords: urban passenger transport, passenger transportation, demand, tariffs, tariff policy

  The article examines the relationship between tariffs and passenger demand. Proposed to use the algorithm for calculating the rate, which takes into account: the cost of the population for urban passenger transport, household income, the ceiling rate. Thus, we can calculate the tariff level above which a negative impact on the social condition of the population. This will solve the problem of affordability of urban transport for most of the population.

Keywords: urban passenger transport, passenger transportation, demand, tariffs, tariff policy

The paper considers the formation of tariffs for passenger transportation in the interests of carriers. The calculation of the minimum level of the tariff. Setting tariffs for passenger transportation will be lower than the minimum loss-making for transportation companies. Thus, the calculated level of the tariff, which will bring needed income transport companies for their activities for passengers.

Keywords: urban passenger transport, passenger transportation, demand, tariffs, tariff policy