The study on the hardness of samples from steel ST3 and 15G. On the basis of the correlation equations obtained values of ultimate strength of the examined steels. With the application of the law of three-parameter Weibull distribution constructed density distribution and the resulting minimum value of ultimate strength. The obtained results are proposed to use to determine the value of the resource for load-bearing systems of vehicles.
Keywords: reliability, lifetime, the hardness of steel, strength of steels, the endurance limit of steels, the Weibull law
The article describes the concept of advanced marketing. Describes the main features of the Corporation, as the organizational-economic forms of business. Investigated the place and role of advanced marketing as a strategic tool of realization of competitive advantages of the business entity. Proposed stages of creating a sustainable business model, which includes initial information gathering,strategic analysis and pricing strategy. Reflects and reveals classic and innovative model of development of the Corporation. Presents the factors in the development of the Corporation's solvency, liquidity and profitability of capital.
Keywords: korporacija, operezhajushhij marketing, organizacionnaja kul'tura, klassicheskaja i innovacionnaja modeli razvitija korporacii
The article proposes some innovative technical solutions to build a multistory substructure for residential and public buildings. To erect a building, it is proposed to construct a system of interconnected rail runways at a first storey level along which travelling gantry cranes and special platforms will move. To descend the machines, building materials, instruments to the design level, during the underground space development, it is proposed to employ travelling gantry cranes. In order to quickly relocate loads and machines from one work zone to another, an additional system of rails is mounted along which special platforms are moving. The management of the gantry cranes and special platforms movement is done by the remote operating panels. The superstructure is built in the traditional way using a tower crane, track mounted, for example. The application of the proposed designs when building multistory substructures will enable to improve the technological processes of building the substructures. The proposed technology will help to use it in all the climatic areas of our country.
Keywords: construction of a multistory substructure, slurry wall, process of excavation, bored pile, substructure
the design of a new object presupposes not only the functional aspect, but an important factor is the location of the building or structure. The choice of location is one of the fundamental criteria: it is necessary to take into account the infrastructure and architectural appearance of the selected area, the needs of the district or region in the projected facility.
Keywords: constructivism, the architectural appearance, the blue line, multi-center, prototype, monuments, cultural centers, the Great Patriotic war
Discusses the problems of effective management of the firm. we study the question of decentralization and delegation of authority to field offices. Seem positive and negative sides of this approach in the light of modern researches of employees of the don state technical University. The conclusion is based on the efficient organization of work units from the creative activity of managers Executive managers
Keywords: organization of construction; personnel management; methods of management of the company
The main purpose of walls and mineral plaster, decorative finishing of external walls, but also to protect the walls from constant exposure to atmospheric agents. In addition to low water absorption exterior stucco needs to have adhesion to various bases, good vydyhaemoy and resistance to cracking. The most effective way to improve the properties of facade plasters is the introduction of hydrophobic redispersible powders which reduce the water absorption of plasters improve their adhesion to the substrate and water vapor permeability
Keywords: mineral plaster, water repellents, redispersible powder dry mixture of stearates of zinc, water absorption, volumetric water repellency
The frequency divider for 32, operating in a range of frequencies 8-18 GHz is considered. The specifics of the schematic diagram is shown. The design and element base is described in short. The model is made and its experimental research is carried out. The technique and the block diagram of the experiment is described. Level of harmonics of an output signal is measured. For decrease of level of harmonics of the useful signal the low-pass filter of type SALF-580 is used. Presence of a parasitic output signal in the absence of an input signal is revelead.
Keywords: frequency divider, microcircuit, experiment, amplitude-frequency characteristic, low-pass filter
The article is devoted to the problem of determining the air flow through cracks in the enclosing structures using numerical methods. Based on the study of the data obtained during the visual inspection, it was found that most of the apartment buildings have significant physical wear, which is mainly characterized by the presence of cracks. Particular attention is paid to the assumptions made for the design scheme. On the basis of the equations of dynamics and continuity, a mathematical model is obtained that allows one to predict the airflow through the crack
Keywords: physical wear, air mass flow rate, crack, permeation, water steam, heat and mass transfer, controlled environment, visual examination, air change, air permeance, numerical methods
The article gives judgments, focuses on the need for the development of military and town-planning sciences, based on the reality of practice, which, apart from armament, must take into account the urban and architectural components formed as a special kind of weapon of future wars.
Keywords: Urban planning, Armed forces, military science, architecture, defense infrastructure, housing
The transverse vibrations of the beams of a constant cross section are taken into account, taking into account the damping. We consider random oscillations of a beam under the action of vector kinematic and dynamic effects. The examples show the influence of correlation coefficients on the standard deviations of the cross sections of a beam. The internal forces in the form of bending moments and transverse forces are determined. An example of an action of a random process with a latent periodicity is given
Keywords: Beam, damping, deflection, bending moment, shear force, random process, spectral matrix, correlation, vector, matrix, transfer function
Discusses actual problems of safety of construction companies. The Central place in system of ensuring economic security of the state takes the safety of the construction sector in a modern market economy. Problem identified wasteful spending, which today has a fundamental impact on the economic security of the construction industry. Characteristic problems of ensuring economic security of construction enterprises.
Keywords: management of construction; financial stability, economic security
Discusses actual problems of determination of the resistance and protection of concrete structures – slabs, produced by standart adopted in the Russian Federation and the United States. Studied national and international experience of evaluation and quality control, measures to preserve the integrity and stability of structures to various types of exposure. The focus is on those conclusions that must be made from the analysis of the causes of destruction in order to avoid future repetition of mistakes and miscalculations that are allowed currently in the design and construction of engineering structures and which often lead to the occurrence of accidents.
Keywords: methods of quality control, concrete structures, failures of engineering structures
Discusses actual problems of organization and management of construction works in swampy areas of Western Siberia are Analyzed concrete examples of work. Suggests effective methods of work organization, considering the technological solutions of the industry and economic opportunities provides an assessment of the likely timing and value calculations of carrying out work in the region
Keywords: organization of road construction; the methods of construction management; construction of roads
Modern urban people face many problems of dense city construction. The article gives the modern construction methods research and reveals the technology for solving the given problem.
Keywords: domed city; atrium; cable-stayed construction; large-span shell; multi-layer cable system; unique buildings and constructions; green construction
Article considers actual problems of the organization of the construction of temporary roads and crossings in winter conditions. Displayed an innovative approach in the construction of these linear facilities. We study the timing and resuse used in the construction of roads and crossings.
Keywords: organization of construction; innovation; road construction; project management