At present, there has been an increase in demand in the framework of judicial construction and technical examinations to the question of the practical application of basic forensic techniques in conjunction with new methodological tools. The practice of conducting judicial construction and technical expertise by 2017 has increased in comparison with 2010, which in turn causes problems in pre-trial and judicial proceedings. The trend in the specifics of the use of mixed or non-traditional forms of techniques is designed to solve problems in complex in structure and content of research aimed at establishing the types, volumes and cost of construction work performed, as well as materials and products used in the reconstruction of buildings. The solution of the problem is seen in the constant updating of both the legislative definition and the existing methods in the practice of application by experts and courts.

Keywords: construction, judicial construction and technical expertise, expert, methods, reconstruction of construction objects, research

The composition of fine-grained fiber-reinforced concrete using Portland cement, stone crushing waste, volcanic ash and basalt fiber are considered. It was revealed that with an increase in the ash content in cement, the compressive and flexural strength of fine-grained concrete decreases, and the water absorption increases. Without a significant reduction in the properties of fine concrete, you can enter no more than 10% of volcanic ash.It has been established that with an increase in the content of large fractions of aggregate, the compressive and flexural strength of fine-grained concrete increases as a result of a more compact arrangement of sand grains. The increase in the content of fine sand fractions reduces the strength characteristics of concrete, and increases water absorption. The dependence of the properties of fine-grained fiber-reinforced concrete on the method of mixing the mixture and molding products

Keywords: portland cement, stone-breaking wastes, volcanic ash, basalt fiber, grain size distribution, fine-grained fiber-reinforced concrete, bending strength and compression, method of mixture preparation, method of molding products

The paper presents the classification of the main causal aspects of the occurrence of catastrophes of large-span bridge structures, given with elements of the analysis of actual examples of the destruction of structures of various types. Also are described the innovative developments applicable in the field.

Keywords: fatigue failure, bridge, large-span bridge, failure of structures, destruction of bridge structures, accident in construction, resonance, wear, aerodynamics of bridge structures, stiffness beam, bolted joint

Evaluation of the effectiveness of ""green"" buildings is usually carried out by a third party using a rating system. The rating system STO NOSTROY 2.35.4–2011 assesses habitat sustainability according to 46 criteria, which are grouped into 10 categories, presented in Table 1. STO NOSTROY 2.35.4–2011. The article presents the methodology developed on the basis of the above-mentioned rating system, as well as the foreign LEED system, and the S-factor for the designed 16-storey residential building is calculated. The calculation for clarity is presented in the form of a diagram. Since the design we strive to get as close as possible to the highest grade of assessment, the most attention is paid to such concepts as energy saving and energy efficiency. Calculation of economic efficiency is possible on the basis of the resource-technological model by calculating the volume of waste during the overhaul and demolition of the designed building. This is a necessary task, since the construction of environmentally-friendly, sustainable buildings requires full consideration of the life cycle of the building, and accounting for the entire life cycle necessitates integrated design. The time spent at an early stage on the complex design of the building, taking into account the concept of sustainable development, is rather quickly compensated with the start of building operation, since it is known that the largest share of costs falls on the operational period of the building. So, as a result of calculating the S-factor, the building is assigned a certain grade of assessment. Raising the grade of an assessment of a building being erected will lead to an increase in its investment attractiveness. That is why it is important to perform a similar calculation at the design stage of the life cycle of the construction object, since in this case we have the opportunity to increase the value of the S-factor to the required.

Keywords: energy efficiency, energy resources, sustainable development, green building, green building standards, stages of the life cycle of buildings

The paper presents the systematization of the main methods for increasing the rigidity and stability of the cable-stayed and hanging types bridge structures , its given in conjunction with the analysis of the real objects. Among the methods presented are such techniques as: improving the quality of the material; additional structural elements that perceive vibrations; modification of the main elements of the design scheme. Also in the paper innovative developments applicable in the field of study are described.

Keywords: transport structure, bridge, cable-stayed bridge, suspension bridge, bridge construction, guyed, pylon, rigidity of the bridge structure, stability of the bridge structure, operational safety of the bridge, aerodynamics of the bridge

In This study posed the problem of simulating the cooling system of supercomputers with a heat pump on the reverse Stirling cycle by numerical modeling of heat transfer processes in the object under study. The article presents the results of numerical simulation of heat transfer processes in the cooling system of processors of supercomputers with a heat pump on the reverse Stirling cycle. A numerical model of the heat transfer process was investigated. Using the method of numerical simulation of the heat transfer process, the dependences of the temperature delta, thermal resistance and the fraction of losses of the heat pump of the cooling system are obtained. The dependence of the ratio of the stroke of the piston to the diameter of the piston H / D of the heat pump has been revealed, taking into account the loss of the thermal resistance of the liquid cooling circuits and the elements of the design of the heat pump.

Keywords: processor, heat flow, thermal resistance, Laplace equation, heat pump, heat exchange, Stirling backflow, cooling system

Computer security is one of the key tasks of our time. Attacks on equipment in the network are constantly and leave large damages in the integrity of the data. There are many methods of computer security, one of which is the method of security through obscurity. The article analyzes the actions of system administrators to ensure server security using the “security through obscurity” method.

Keywords: computer security, security through obscurity, cryptography, decoding, setting up web servers

Fire-retardant gypsum solutions on exfoliated vermiculite were studied using volcanic ash and the multi-functional additive D – 5. It was revealed that the introduction of the D-5 additive by weight from the binder significantly speeds up the setting time of the composite gypsum solution on the expanded vermiculite. gypsum-vermiculite solutions with additives of Portland cement and D – 5 have a higher water resistance.The compositions of composite gypsum solution on exfoliated vermiculite and ash have been developed. It has been established that volcanic ash of a fraction of 0.0–0.315 mm can be replaced by expanded vermiculite without a noticeable increase in average density. Additives of Portland cement and D – 5 increase the strength of the gypsum composite vermiculite solution with ash, the softening coefficient of the composite increases to 0.75.

Keywords: gypsum, portland cement, expanded vermiculite, volcanic ash, additive D-5, fire protection, gypsum vermiculite solution, tensile strength at bending and compression, average density, softening coefficient

The article deals with the problem of pedestrian crossings and congestion of highways of the city of Volgograd. It described the situation on the highways and solutions to eliminate congestion on the road. Car traffic was conditionally divided into 3 categories: transit, the transit from the center and the car flow moving into the center. Studied the question of the safety of pedestrians on the road, because, except for pedestrians with the intersection increases their safety. The study and analysis of all previously implemented measures was proposed construction of underground pedestrian tunnels. Several embodiments of tunnel junctions have been considered. Analysis of the current transport situation revealed the busiest places in the city center.It was noted that the construction of underpasses solve the problem of vehicular traffic in the city center and pedestrian safety, and the city will have new underground space.

Keywords: Сar flow,highway, tunnel transition, transit transport, carriageway, longitudinal,security,road traffic

The task of real-time identification of control objects is relevant and in demand at the stages of auto-tuning and self-tuning of regulators. Modern industrial controllers have sufficient computational capabilities to implement adaptive control. The article discusses two approaches to obtaining the impulse transfer function of an object: by the least squares method and directly by the transient response. Least square identification is applicable for a wide class of objects, including oscillatory objects. But this method requires a fairly large amount of computational resources, which imposes a limitation on the speed of the object. The direct identification method for transient response requires significantly less computational resources, but is applicable for aperiodic objects. Algorithms are implemented in the form of programs for industrial controllers and can be used both at the stages of preliminary identification of control objects and at the stages of autotuning typical PID controllers and controllers in the state space.

Keywords: adaptive control, pulse transfer function, least squares method, transient response, PID controller, programmable logic controller, state variables control, programming language ST, prorgamming language C, CoDeSys

The results of the calculation of installations for reducing the level of air pollution from dust and gas emissions from the Bzugu wastewater treatment plant are given. The aerodynamic calculation of pipelines of the system for cleaning dust and gas emissions and the calculation of prevented environmental damage during the implementation of the proposed environmental measures have been performed.

Keywords: dryers, dust and gas emissions, dust, ammonia, turboscrubber, Yatagan gas convector, axonometric scheme

The features of natural water reagent treatment are considered. The evaluation of the efficiency of coagulants, the most frequently used in the Russian Federation, rational methods of their introduction into the treated water is given. A method of water treatment is proposed, which allows to use the advantages and minimize the disadvantages of mineral coagulants. Experimental data confirming the effectiveness of the proposed method of concentrated coagulation using a mixed coagulant are presented.

Keywords: water of superficial sources, coagulant, sulfate aluminum, aluminum polyoxychloride, the concentrated input of a coagulant

The article proposes the use of a table processor to reduce the complexity of applying the probabilistic paper. Based on the written methodology, the measurement results were processed. Further ways of developing the methodology are suggested.

Keywords: metrological assurance, probabilistic paper, normal distribution law, OpenOffice Calc, MS Excel

the article presents a possible concept of improving the flat solar collector in order to intensify the heat exchange process, which increases the quality and efficiency of the equipment under consideration. A brief description of the proposed configuration of the device is given. The positive aspects of such technology are described

Keywords: energy saving, heat exchange process intensification, independent heating circuit, irrational energy consumption

the article considers the possibility of increasing the efficiency of the solar collector by improving its heat exchange panel, which is implemented by optimizing the heat exchange processes using the concept of combining the thermal properties of different metals. The positive aspects of this method are described. A brief description of the comparative analysis is given

Keywords: heat exchange panel, energy saving, solar installation, alternative energy sources, thermal properties, heat transfer optimization, solar collector, heat exchange intensification