The purpose of the study, which this article is limited to, is to analyze the violations committed during the installation of precast concrete goods of a residential building, the place where errors occurred and their causes, and analyze the consequences of violation of the technology for erecting the supporting frame of a residential large-panel building. To achieve this goal, it is necessary to study and analyze the main technological actions and in the process of operational quality control, to identify the places of occurrence of technology violations.On the example of a large-panel residential building, the problems of the quality of work during the construction of the aboveground part of the building are considered. The drawbacks of the constructive solution of external wall panels and joints between them are revealed. The main mistakes in the production of work are considered, at what point in the production of work they arise, and what they will lead to in the future. An example of operational construction control of the installation of load-bearing structures of a large-panel residential building is given.An analysis of errors in construction and installation works was carried out, conclusions were drawn and proposals were made to improve the quality of work during the construction of a large-panel residential building.

Keywords: panel house building, quality of construction and installation works, PIK, construction of residential buildings, violation of technological processes, production, construction, quality control

This article discusses the need for modernization of existing thermal power plants (TPPs) in Moscow. The profitable aspects of technical re-equipment are considered, as well as the factors affecting the composition and implementation of investment projects for the development of existing thermal power plants in the capital are studied.

Keywords: thermal power plant, modernization, technical re-equipment, hazardous production facility, technical condition assessment, major repairs, investment project, service life, construction and installation works, technological equipment

a study of a ventilation system with a local recirculating diffuser was carried out. A three-dimensional model of the office space has been built. Using the STAR-CCM + hydrodynamic computing complex, a numerical simulation of the ventilation system has been performed. The calculation results are analyzed, the advantages of the investigated system are given.

Keywords: ventilation systems, local recirculating diffuser, indoor air quality, energy saving, numerical simulation, STAR-CCM +

The article describes the developed design of a sample of joining solid wood elements on SHERPA plates, which made it possible to simulate the operation of nodal junctions of the main and secondary wooden beams for frame buildings and structures. A procedure for testing specimens by loading in steps with periodic unloading has been compiled and tested on three test specimens. The tests of the approved sample of the joint were carried out, its maximum bearing capacity was established, as well as the load corresponding to the upper boundary of the elastic work area (VGOUR) of the joint. The graphs of dependencies were built: "Load - total deformation Dp", "Load - permanent deformation Dо", "Load - elastic deformation Dу", "Elastic deformation Dу - residual deformation per cycle dо". The deformations of the joint were determined within the limits of the bearing capacity of the sample, the calculated bearing capacity of the joint and the coefficient of transition from glued wood to solid wood.

Keywords: solid wood, SHERPA metal strips, test of a specimen of a joint of wooden elements, load-bearing capacity of the joint, deformability of the joint, upper limit of the elastic work area of the joint, total deformation, permanent deformation

This article discusses the results of environmental monitoring of the waste disposal facility located in the northern part of the Traktorozavodsky district of the city of Volgograd. The data on the territorial features of the investigated area, flora and fauna are presented. The morphological composition of wastes present in the soil is analyzed, as well as the results of laboratory studies. The results of studies on the content of heavy metals in the soil (bulk and mobile forms) and data on bacteriology (enterococci, bacteria of the Escherichia coli group, helminths, cysts of pathogenic intestinal protozoa) are shown. The authors put forward recommendations on the methods of reclamation of this territory.

Keywords: production and consumption waste, environmental harm, environmental monitoring, landfill, heavy metal pollution

This work is devoted to the problem of conducting a construction and technical judicial examination of a rolled roof after repair. The relevance of the use of roll roofing and its defects are considered. An example with a poor-quality roof repair is reviewed. Besides faults of the management of the homeowners' association were noted. These faults led to the emergence of ambiguity during the examination. They do not allow to interpret the situation in favor of the residents of the house fully, despite the obvious violations of the requirements of regulatory documents and the identification of significant defects. Considered a situation in which a dispute about the type of repair and related judical issues arises. Conclusions based on the results of the study were made.

Keywords: construction and technical judicial expertise, roll roofing, flat roof, maintenance, major repairs, defect, breach of joints

The article discusses modern methods of strengthening the bowl of a reinforced concrete pool in the development of project documentation for major repairs or reconstruction of capital construction objects based on the results of the survey and assessment of the technical condition of structures. To implement design solutions for strengthening the pool bowl, other methods can also be used, for example, using modern methods of strengthening using composite materials [9-11]. This will increase the rigidity of each structure and the bowl as a whole. The development and implementation of these design solutions using modern methods will allow you to qualify the design of the pool bowl in a working state and return the ability to perceive all the loads acting on it.

Keywords: reinforcement, major repairs, reconstruction, design solutions, reinforced concrete, composite, strength, load-bearing capacity

The article analyzes the landscape complex of the swamps of Southern Iraq, as a proposed location of architectural objects for the construction of an eco-tourist complex. The purpose of the study is to identify the mechanism of formation of compositional links between architecture and landscape on the example of tourist development of wetlands in Southern Iraq. The functional and planning model of the tourist complex is presented. On the basis of morphological analysis, the horizontal and vertical morphological structures of the wetland landscape were identified. The elements of the natural and ecological framework of wetlands are described, which include: - natural "linear structures" (channels, channels, channels); anthropogenic "linear and vector structures" (pedestrian roads, highways, dams, bridges); "nodal structures "or" cores "located at the intersections of linear and vector directions of development of the framework; "buffer zones" and "accumulators" - island and peninsular elements for the placement and accumulation of various functions (recreational, economic, tourist, etc.); "markers" and " dispersed elements "are a kind of" focal points "and" accents " in the planning structure of the landscape (small islands, protrusions of the coastline, backwaters, peaks, capes). The structural components of the tourist complex are proposed in the form of a combination of its three structures: a) "three-dimensional structure" (buildings, blocks, buildings and their combinations); b) "plastic structure" (the degree of dissection; "sculptural" and detailing of individual three-dimensional forms and spaces, taking into account the "ranks", "levels" and "steps" of detailing); c) "decorative structure" (small forms; color and light-tone combinations of surfaces; textures and textures of architectural volumes). Variants of compositional links between the architecture of tourist complexes and the wetland landscape at different levels of formation are developed. The presented methodological tools will make it possible to form functional ecotourism objects that correspond to the principles of sustainable architecture.

Keywords: wetlands, architecture, landscape, ecotourism complexes, compositional relationships, morphological structure, ecological framework

This work is devoted to the problem of carrying out construction and technical expertise of reconstructed public buildings. The main problems of modern reconstruction of urban development are considered. The differences between the reconstruction of public buildings and residential or industrial buildings have been revealed. The difficulties faced by the contractors during the reconstruction are estimated. The difficulties faced by the contractors during the reconstruction are estimated. The main points that experts turn to when examining a reconstructed object are noted. The disadvantages associated with the lack of a developed procedure for reconstruction and construction and technical expertise are considered. Conclusions based on the results of the study were made.

Keywords: reconstruction, public buildings, the specifics of the work performed, poor scientific study, human safety

The article describes the design solution of a system for dedusting emissions into the atmospheric air using vortex inertial devices with counter-swirling flows (CSF) and a separator-concentrator. An approach to evaluating the efficiency of such a dust collection system is described. Analytical dependencies and a flowchart for calculating the efficiency of the system are presented.

Keywords: vortex inertial dust collector with counter swirled flows (CSF), separator-concentrator, dust collecting system, dust cleaning efficiency

The article deals with the case when a concentrated force is applied to the web of a prestressed beam. The preliminary shear stresses do not affect the stress state in the middle of the beam span. However, preliminary normal stresses will act over the entire height of the wall and affect the distribution of the zone of local stresses and the stress state of the web. Determination of stresses in a beam is based on the beam theory of S.P. Timoshenko. The article presents a system of equivalent forces on the edges of the wall and the equation of normal stresses in the cross section of a prestressed beam. Compared to a conventional beam, prestressing reduces normal stresses from concentrated forces.

Keywords: thin-walled structure, steel beam, I-beam cross-section, prestressing, local stresses, local effect, Saint-Venant principle, Timoshenko SP beam theory, Karman's solution, Fourier integral, stress function

Modern design cannot be imagined without the application of BIM technologies. Modeling is increasingly used in the design of new construction of buildings and construction, renovations and major repairs, which makes up the majority of projects underway. 2D programs are still used for the inspection of buildings and construction. Visual and instrumental examination is not a difficult task requiring complex programs. But the introduction of BIM technologies ensures the acceleration of work on the inspection of buildings and structures, significantly improves the quality of the result, and also maximizes the actual condition of building structures.

Keywords: modeling, visual and instrumental inspection, building, construction, building structure, building life cycle, defects, damage, actual state, technical characteristics, operation

The article provides an assessment of the economic efficiency of a prestressed bistal beam, prestressed stretching of web. The comparison is made with a conventional bistal girder without prestressing with the same cross-section. The costs of material, design, production, transportation and installation are considered. It is taken into account that to create pre-stress, more labor costs are always needed, therefore, the manufacture of pre-stressed structures is more expensive than conventional structures. The purpose of prestressing is to reduce the consumption of steel in the fabrication of the structure. The structure of labor costs for the manufacture of structures is given. A comparative analysis of the cost "in business" of a running meter of a beam, prestressed by wall stretching, and a beam without prestressing, depending on the complexity of their manufacture, is carried out.

Keywords: thin-walled structure, bistal girder, I-beam, prestressing, stretching of web, structure weight, overhead costs, labor intensity of manufacture, cost-effectiveness, custom design, value in action

Ensuring the reliability of oil and gas pipelines laid in zones with increased seismicity, namely, the choice of design and technology for the construction of pipelines, is a topic of current and requiring serious study. The article considers methods of laying underground pipeline in seismic areas, provides analysis of proposed structures and construction technologies. To minimize the identified shortcomings, the authors proposed a structural diagram of a pipeline built by the microtonneling method, which will ensure the stability of the structure to seismic loads and reduce construction and operation costs.

Keywords: underground oil and gas pipeline, seismic impact, reliability, microtonneling, construction technology, structural diagrams, compensating element

The article reproduces and supplements the experience of modeling and determining the optimal angle of inclination of the lattice with an estimate of the total lengths of the elements, the greatest forces, displacements and natural frequencies for computer models of various configurations. The possibility of using this system in civil construction with the use of volume-block technology of building construction is described. This article will be useful for design engineers involved in the design and calculation of high-rise buildings, bulk-block or modular buildings made of reinforced concrete and metal structures.

Keywords: diagrid, mesh load-bearing structures, reinforced concrete structure, metal structures, stability, computer model, high-rise buildings, bulk-block, prefabricated module

This article provides information on the possibility of using offshore wind farms to provide energy to offshore structures such as oil and gas platforms, as well as coastal communities.

Keywords: wind power plant, wind generator, offshore power plant, SIEMENS generator, offshore oil and gas facility, oil and gas field, coastal settlement

A methodology for the development of a system of typical environmentally and economically effective road pavement designs is proposed, which allows to optimize the process of designing pavements using asphalt granulate for the design of overhaul of road pavements.redistribution of investments in interests of the organization and development of new production on available floor spaces. The most important organizational economic targets of a diversification of management are presented by innovative activity of the industrial enterprise.

Keywords: cold deep in-place recycling, pavement, standard design, road, design, construction, asphalt granulate

With the help of a comparative analysis by the method of hierarchies, various organizational and technological solutions for the device of hinged facade systems were considered in order to determine the most effective and rational type. The options are compared in terms of the duration and cost of construction and installation work. The comparison result is a compromise solution depending on the weight of the compared indicators.

Keywords: facade system, organizational and technological solutions, comparative analysis, duration, cost, hierarchy method

Constant climate changes, the rapid pace of development of the northern and eastern territories of our country, the areas of permafrost spread, put forward a number of relevant theoretical and applied problems for science. Soil degradation in permafrost areas entails the deformation of buildings, the emergency condition of thermal and power plants, the immersion of road sections after 2-3 years of operation in the ground of the base, the failure of the supports of power supply networks, communication lines and water pipes.

Keywords: permafrost, climate change, soil degradation, monitoring of the technical condition of buildings, operation of structures

The work is devoted to the development of 3D models of the territory with buildings and other objects placed on it for subsequent analysis of insolation. The work describes the requirements for solar insulation of buildings, analyzed the regulatory requirements for solar insulation of premises, a schedule of monthly sundials is presented using the example of the city of Volgograd, a substrate is formed with applied contours of buildings and objects for a more convenient implementation 3D which was formed in third-party software, presents a brief analysis of the Energy software product 3D which describes the positive and negative aspects of the software, on the example of the design project of the scientific and educational center, an analysis of the insolation of the territory according to the formed 3D model was carried out. Based on the results of the analysis, the placement of objects was corrected to achieve the required illumination.

Keywords: 3D model, modeling, Energy3D, SaSplanet, reference coordinates, 3-dimensional projection, 2-dimensional projection, 24-hour sun trajectory, solar analysis, monthly solar clock plot

The article presents an attempt to recreate the entrance group of a fortification located in the delta of the Don River and once belonged to the Republic of Genoa in the form of a virtual model. The publication used previously unpublished documents, which formed the basis of the proposed work. On the basis of archival materials, the authors created a three-dimensional model of the Genoese gate of the XIII century, the traces of which in the XXI century almost disappeared. From the documents found, the exact dimensions of the structure became known, as well as some architectural elements that decorated the entrance and walls inside the opening. The presented virtualvirtual model is based on measurements made during the archaeological expedition of B. V. Lunin.

Keywords: Tana, Genoese trading post, Genoa, fortress, gatehouse, fortification

The article describes the problems of modern industrial architecture of small and medium-sized enterprises. The conflict between the established design practice based on the methodology of the 70s-80s of the XX century is revealed. A method of solving the problem based on the planning rethinking of the principle of "flexible" layouts is proposed and the introduction of a new element into the structure of the enterprise – the development zone.

Keywords: industrial architecture, problems of modern architecture, flexible planning solutions, functional mobility, blocking of premises, small-scale functional zoning, industrial enterprise development zone

The article is devoted to the comparative analysis of the architectural features of the medieval temples of Simon the Cananite in New Athos (Abkhazia) and the Northern Zelenchuksky in Karachay-Cherkessia (Russian Federation) in the context of three-courtyard temples, the study of prototypes of their architectural forms, the description of the results of the analysis of building solutions of temples based on the X-ray phase method. This method is used for the study of these temples for the first time. The scientific novelty of the article is due to the fact that a comprehensive study of the planning, spatial solution and building material of the temples of Simon Kananit and Northern Zelenchuksky, based on the results of physico-chemical analysis, allows us to confirm their dating to the X century and establish the chronological proximity of the two monuments.

Keywords: medieval architecture of Abkhazia and Alanya, three court temples, X-ray phase analysis