Currently, the use of composite materials in construction is expanding. However, there are only isolated examples of the use of composite materials for large-scale industrial structures. The use of composites is hindered by their significantly higher cost compared to traditional building materials. However, recently, due to the improvement of the processing technology of composites, it has been possible to significantly reduce the cost of some of them, in particular pultrusion fibreglass. The efficiency of using pultrusion fibreglass for cable trestles of industrial structures has been established. It is shown that the calculation of the cable overpass element is rational in the probabilistic setting.

The growing need for buildings with a large interior space free of intermediate supports for holding mass meetings, sports and cultural events, exhibitions, etc. became an important factor in the development of spatial structures. In determining the appropriateness of using spatial metal structures in comparison with other systems and when choosing a coating scheme, an essential factor is the possibility of simple, fast and labour-intensive manufacturing and installation. Ways and features of the manufacture and installation of modern rod spatial systems (shells and domes), cable-stayed, membrane and combined systems are presented. The analysis of various methods of manufacturing and installation of spatial metal structures are shown. Justification of the need for the scientific and technical support (STS) in the manufacture and installation of structures, a list of the main tasks of the STS and methods for solving them are given. The main results of scientific support for the manufacture and installation of structures are presented. A description of the structures, optimal solutions for their manufacture and installation, examples of constructed structures are given.

This article summarizes the results of a four-and-a-half-year study of the joint work of masonry of the front layer of three-layer exterior walls and a monolithic reinforced concrete slab under temperature effects. The studies were conducted on a model of a building height on the floor. The deformations of the masonry and slabs, the width of the opening of cracks in the masonry, depending on changes in air temperature and structures, the change in the temperature of the masonry of the front layer by its thickness, including taking into account solar radiation were measured. The studies confirmed the previously obtained results on the mechanism of formation and development of cracks in the facial layer and also allowed to obtain a number of new ones. Based on the studies, the methods for calculating the stress-strain state of the face layer masonry and the efforts in flexible connections were adjusted.

The results of experimental studies of masonry made of large-format ceramic blocks with a front brick layer 85 mm thick when the layers are shifted relative to each other in the vertical and horizontal planes are presented. It was found that the strength of ties from basalt-plastic mesh is sufficient for the perception of shear forces and in the ultimate state, the ties are disconnected from work mainly due to mesh breaking. To estimate the strain-stress state of masonry and the efforts in the bonds, numerical modelling was performed. The verification of design schemes was carried out by comparing the experimental results and calculations using the software complex «LIRA-SAPR». The gap between the layers was varied. Studies have established that when filling a vertical seam between the layers of a mortar, the limiting state occurs due to a cut along a blocks made of porous ceramic with vertical voids. In the presence of a gap between the layers, the limiting state occurs due to a mesh break.

This article provides a review and analysis of the research carried out by specialists of the Research institute of building constructions named after V. A. Koucherenko testing samples of glass structures used as supporting structures. Preliminary strength and deformation characteristics of the glass are determined based on the obtained experience. The need for standards and rules for testing, design of load-bearing structures made of glass and normalization of the physical and mechanical properties of the material is indicated.

The results of a research of snow load on the ground for highlands of the Transbaikal region are presented in the article. A statistical analysis of maximum annual values of snow load on the ground received by routing snow survey for the foothills of the Udokan ridge on different high levels is fulfilled. The long-term maximum annual data for meteorological stations and posts of the Transbaikal Hydrometeorological Department and the Amur region of the Far Eastern Hydrometeorological Department, located close to the Udokan ridge, are also analysed. By requirements of SP 20.13330.2011 «SNiP 2.01.07-85* Loads and actions» and SP 20.13330.2016 «SNiP 2.01.07-85* Loads and actions», a design value of snow load on the ground is determined with 25-year mean return period and with 50-year mean return period. A relation between normative (or design) values of snow load on the ground and a height of terrain above sea level is determined by a comparative analysis of the above information. Numerical values of a high-altitude coefficient are ascertained on the principles of SP 20.13330.2016.

The general analysis of a model test method in a wind tunnel applied for determining snow loads design parameters is presented. Basic conditions and requirements are given for modelling a snowdrift on the roofs of new forms. The general principles of conversion from the experimental schemes of snow load distribution on the roofs by the wind action in different directions to the assignment of numerical values of the form coefficient j are established. As an example, the results of modelling a snowdrift on the roof of the stadium are presented.

The article substantiates the need for complex protection of bearing glued timber structures (Gluelam), including protection against biodegradation, variable humidity effects during operation, and fire exposure. The results of weathering tests of acrylic varnish developed at the Central Scientific Research Institute of Building Structures and its influence on the change in the moisture state of glued elements of a massive cross-section when exposed in the open air are presented. The possibility of flame retardant treatment of Gluelam in the factory is considered. It is shown that subject to the technology of applying flame retardants, the likelihood of damage to the applied coating decreases sharply when the Glulam is in the open air for 5-6 months. The results of observations of the state of fire-retardant coatings Phoenix DP and Pirilaks K45 on fragments of KDK when exposed to stands are presented.

This article discusses two approaches to modelling brickwork and comparing calculation results with full-scale testing, in order to select an updated calculation scheme for an accurate estimate of the remaining life of brick arches. Field tests of masonry mortar and vaulted brick are given to determine their strength. The results of calculating two brick vaults according to a heterogeneous and homogeneous model are presented: - 1^st model - heterogeneous, brick and mortar of arches are represented by separate elements - The 2^nd model is homogeneous, masonry is modelled as solid, homogeneous.

The publication presents the results of experimental studies of masonry samples from large new-generation silicate concrete blocks with vertical tongue-and-groove joints on adhesive joints and an analysis of the results of the tests. The methodology for preparing masonry samples for experimental studies is described. The article provides a methodology for performing laboratory experimental studies of masonry samples. As a result of the work, strength and deformation characteristics of the investigated masonry were obtained. The factors influencing the strength and deformation characteristics of the masonry of the tested samples are determined.

This article is devoted to the analysis of results of in-kind tests of compound posts from cold-bent C-shaped profiles. The article considers the nomenclature of profiles of compound posts, presents the form of application of load on test samples, the equipment and control devices with which tests were carried out, as well as the comparison of the results of the experiment with the results of numerical analysis, including on the software finite element complex ANSYS. Conclusions were drawn from the results of the tests and comparison of the results of numerical analysis and in-kind experiment. Recommendations for practical design are given.

The analysis of the work of natural structures of the domes from laminated wood and numerous preliminary calculations have shown the possibility of saving materials by reducing the height of a cross-section of meridional ribs. It is especially effective while designing the cladding as enclosing structures in collaboration with the elements of the frame (ring and meridional edges). Multiple static indetermination of such structure allows its non-linear work and the redistribution of efforts under uneven loads. In this case, the sheetings take a significant part of efforts that occur in the shell, and the edges are underloaded. Numerical computer calculations in real-time mode at a step-changing unilateral load are carried out taking into account its seasonal variations during 5.4years. The VAT of all elements is investigated. For the analysis of the frame, the calculation is performed by the method of an integral module, which allows controlling the strength resistance of the structure at any time of its operation.

The article deals with the design of farms covering three surveyed at different times objects: open-hearth shop of the plant "Tag-met", warehouse "Stavropol" and pavilions "Lublino", made with deviations from standard solutions. It is shown that as a result of these structural elements are forced to work in unusual conditions for them, often perceiving the opposite of the project efforts. In the given examples, as a result of the decisions taken by the unsupported experience and calculation, the emergency conditions of the building coverings were recorded, which required immediate measures for their safety. Specific measures to extend the life of structures are given.

The article is dedicated to the characteristic of the contemporary development stage of science - synergist. In it, the basic condition of the founders has examined synergetics as a scientific concept. The ideas are presented the new paradigm of the explanation of natural-science and social phenomena and processes. The prerequisites of the appearance of synergetics in the works of Russian and foreign scientists are analyzed.