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

The aim of this work is to study the degree of protection of underground waters of the Kuibyshev district of Rostov region. The study area represented by the geological deposits of Quaternary (recent sediments) Qh, Neogene and Paleogene systems (Oligocene) P3, Cretaceous (upper division) K2 and the Carboniferous system (upper, middle and lower portions) S1,2,3 based. On the analysis of geological structure of water-bearing rocks in the Kuibyshev district of the Rostov region, which showed an insufficient degree of protection of underground waters against pollution and, as a consequence, insufficient supply of public drinking water, built map of underground waters protection of the Kuibyshev district of the Rostov region

Keywords: groundwater, Geology, classification of water, pollution, drinking water, rural settlement

The article presents some results related to the automation of calculations of wastewater in residential buildings using AutoCAD. Developed using ActiveX technology computer-aided design of the drainage system of a residential building, the following tasks: engineering design of the riser of the sewer network; calculating the throughput of the most loaded riser drainage; calculation of releases of wastewater; hydraulic calculation of yard drainage network; compilation of specifications. The developed program allows you to extend the functionality of AutoCAD.

Keywords: AutoCAD, automation, design of drainage, CAD, ActiveX, AutoCad customization

The paper presents the design procedure and the appointment of the composition of the molding mixtures, which is based on computational-experimental approach to the determination of the composition taking into account the quality of the used raw materials and requirements to the properties of concrete manufactured products

Keywords: Raw materials, grain structure, concrete, svezheulozhennye mix, precast products, hard pressing, block diagram

The analysis of existing methods of water use when applied galvanic coatings in the automobile transport sector. It is established that under the existing schemes of water use in the galvanic production wastewater after cleaning goes into the sewer, keeping the risk of contamination of open reservoirs. In such circumstances, the most effective is the use of system of the closed water cycle, which with the help of automatic control allows to take into account changes in the concentration of substances laundered in the washing baths providing the required quality of washing parts with a minimum consumption of water resources.

Keywords: water purification, electroplating system, the water cycle in the galvanic system

Providing the claimed performance characteristics of the absorber throughout its life is the most important task that ensures the correct operation of the coupler. Increasing requirements for increasing the speed of movement and the volume of freight traffic make it urgent to increase the reliability of the absorbing apparatus by improving the design of its components and components (housing, friction plates, wedge, etc.).

Keywords: Absorbing apparatus, friction plate, cermet, surface wear, defects in absorbing apparatus