The article is devoted to the second stage of architectural and design activity of Hector (Hector) Guimar (1867–1942), during which his unique style was finally formed. During the period from 1900 to 1912, following the traditions of «total design», the architect was engaged not only in the design of residential and public buildings, but also in the decorative design of their facades and interiors, furniture, tableware, elements of technical equipment. He compiled a catalog of metal decorative elements for their serial production, published a set of advertising cards of his best works. The most well-known architectural designs are made in Guimard’s style, such as the house Jassede at Versailles (1903), Hotel Deron-Levent (1907), Castel d’Orgeval (1904–1905), Villa Surprise (1903-1907), Hôtel Guimard (1909–1912), Hôtel Mez-zara (1910–1911).  

The article is devoted to the architectural space role in the formation and preservation of the architectural and artistic identity of Votkinsk city-plant associated with the name of the Russian composer P. I. Tchaikovsky. The authors show the importance of factory and city government in beautification of this ancient city. The main elements of architectural space and gardening at different stages of the formation and development of the city are analyzed as well as small architectural forms and their current status. The analysis of the Votkinsk improvement allows us to conclude that it is necessary to conduct a thorough pre-design analysis prior to the urban development.  

The article considers the initial stage of architectural and planning development of the Lagerny Park late in the 19th century using new iconographic and textual material. The territory began to be landscaped in the second half of the 1870s, through to the activities of F.A. Narsky, the Tomsk provincial military chief colonel. His contribution to the improvement and landscaping of summer military camps is considered herein. On the basis of archival documents, the architectural and planning structure of the military camp is graphically reconstructed.  

The article is devoted to questions of the sustainable development of a large territory in the southern part of Siberia, including such administrative subjects as Altai, the Kemerovo region, the Republic of Khakassia, the Republic of Tuva, the Irkutsk region and the southern part of the Krasnoyarsk region. The urban planning activity on large space uses exceptional natural landscapes, recreational conditions, natural resources due to controversy between the participants (government, investors, inhabitants). Each participant has priorities and aims at establishing his own building regulations. Different concerns intersect in one territory, which determines a three-dimensional lattice of urban development with located points, nodes (cities and villages), natural and transport axes. Therefore, urban contradictions should be considered as a factor determining the direction of the territory development.  

The paper concern is preservation of the cultural heritage object and its adaptation for mod-ern use largely depending on completeness of its study and the amount of information availa-ble, including field studies. GIS technologies allow to analyze and update full-scale fixation. The purpose of the analytical method is to identify the possibility of GIS technologies of restoring cultural heritage of the Mount Parnassus in the Aleksandrovskii Park. The paper deals with the problems associated with the modern use of the Mount Parnassus. The analysis is given to publications in the field. The history of creation and previous restoration works are considered. In 2016, the Tsarskoye Selo Museum applied for the first time new 3D reconstruction technology for visualization and evaluation of the restoration projects in the Park. After the revival of the Catherine Park, the restoration of the Aleksandrovskii Park is one of the priorities. Preservation of cultural heritage requires a detailed scientific approach. Research and design documentation requires an accurate solutions of embedding and analyzing the existing landscapes. The applied advanced technologies have been developed in Russia over the past ten years by Geoscan to obtain high-precision orthophotographic charts of any territory. Unmanned aerial vehicles allow to work with various objects, from autonomous buildings to large air terminals. Photogrammetric software equips Museum workplaces with data processing and provides self-training in the data acquisition and processing. Aerial imagery data can be used for content, performance and quality control, DEMs, terrain models and 3D surfaces.

The paper presents the analysis of historical sources associated with the Bikatunsky jail, formation and improvement of Biysk fortresses and, later, the City of Biysk. The main stages of the planning structure evolution are considered for the period from the 18 to early 20th centuries, including the formation of architectural-planning structure of Biysk and regularities of its planning structure. The study shows the city potential, both in historical and socio-cultural aspects. The results of this research can be used for further city and tourist infrastructure development.  

The article is devoted to problems of ensuring durability of steel concrete elements of buildings. It is shown that durability depends on their residual and service life. Normalizing of the latter is generalized, not sufficiently substantiated and non-regulatory. Computational techniques to assess the construction durability are not yet available. Actual and informative is determining the residual life of steel concrete structures. It was noted that the reason for the reduction in the carrying capacity of steel concrete structures and, accordingly, the residual life is corrosion damage of concrete and reinforcement due to an aggressive environment. This paper analyzes the modern methods of calculating residual life of flexural elements with corrosion, identifies their advantages and disadvantages in building inspection. The residual life should be determined on the basis of field surveys, when the maximum corrosion damage is found in various design sections. The physical and statistical approach is the most promising and acceptable for assessing and predicting the residual life of flexural steel concrete elements. The value of the residual life is proposed to be established with regard to reliability coefficient. Considering the ever increasing cases of early loss of bearing capacity of steel concrete structures due to corrosion damage, it is advisable to include mandatory requirements in construction design standards of calculating on a new ultimate limit state.  

The stress-strain state of the prefabricated monolithic element depends on its gradual installation and loading. Regulatory documents of the Russian Federation indicate the need to calculate precast-monolithic structures for two stages of construction: before and after the specified monolithic concrete strength acquired. In this case, the stress-strain state that appeared in the prefabricated elements before the specified monolithic concrete strength should be considered.  However, the construction and loading stages at issue and accumulation of stresses and strains are not disclosed in the regulatory documents. In addition, this problem is insufficiently studied.  In this regard, the aim of this paper is to study the pre-loading effect of the prefabricated element on its stress-strain state and the load-bearing capacity.  During the experiments, a pre-loaded prefabricated part is studied. The obtained results are compared with instantaneously loaded test samples. Other parameters of the experimental models are completely identical. In all, 5 samples are tested (step-by-step loading of 3 samples and instantaneous loading of 2 samples).  It is shown that pre-loading of the preloaded prefabricated part significantly affects the stress-strain state of the whole structure and its total load-bearing capacity.  

The paper explores the possibility of using carbon-containing waste produced by a metallurgical plant. The physico-mechanical characteristics of the obtained products are studied depending on the compositions and the grain size of the feedstock. It is found that the use of carbon-containing waste allows producing ceramic bricks with the following parameters: ρ ~ 2150 kg/m3, Rsg ~ 42 MPa, W ~ 3.4 %, and the frost resistance of over 50 cycles. The results of phase formation in ceramic products are presented. It is shown that the use of carbon-containing waste allows to obtain alumi-nosilicate compounds, such as anorthites and quartz-containing compounds, which give strength characteristics to finished products.  

The paper summarizes the research results of sintering and durability of wall ceramic materi-als modified by diopside-containing raw products and based on low-melting-point clays and loams, and kaolinand high-melting-point clay faience. Mechanical-and-physical properties of ceramic materials are identified and studied after annealing, depending on the diopside content. It is shown that depending on the content and introduction of clay minerals in the ceramic mixture, both coarse (0.5–1 mm) and fine (0.06 mm, dominating particle size of 0.01–0.015 mm) dis-persed diopside particles can be used. It is found that for loams with the clay mineral content of less than 10 wt.%, the addition of finely-dispersed diopside particles is more efficient. The latter provides ceramic sintering at 1000–1100 °С and increases its strength by 1.5–2 times. The intro-duction of dispersion diopside particles in the faience mixture lowers the annealing temperature from 1250 to 1150 °С with a simultaneous increase in its strength.  

The development of new energy-efficient methods in the production of building materials is always important. One of such materials is microspheres which can be obtained by plasma energy. A study of physical processes during the formation of microsphere density determines the optimum parameters for the production of high-quality building materials. The article is devoted to production process of microspheres based on aluminosilicates. The plasma jet modes and their effect on the morphology of generated microspheres are investigated. It is shown that microspheres with different morphology can be produced by using a plasma gas control.  

It is currently relevant to study the use of local waste based on mineral finely dispersed additives similar to substances that are formed as a result of cement hydration, which ensures high quality, increases frost resistance and forms a dense dissolved mixture. Reducing the consumption of a binder in mortar and concrete mixtures due to the introduction of modifying additives is also an important research field. The paper presents the results associated with pro-ducing a complex modifying additive consisting of waste products from marble and silicon di-oxide nanoparticles and its effect on the properties of cement systems. It is shown that the introduction of a modifying additive, while reducing cement consumption, can increase the compressive strength of cement paste up to 56 %. The X-ray phase analysis is used to determine the composition of the modified cement paste. The efficiency of using marble production wastes together with SiO2 nanoparticles as a complex modifying additive is evaluated to im-prove the properties of the cement mix.

The traditional heating of greenhouses (based on liquid or air) lacks efficiency, when it concerns energy-saving or economic expenditures. The agricultural industry is therefore inter-ested in the innovative approach to the power supply of greenhouses. The use of geothermal sources, biofuel, heating pumps and other conventional greenhouse heating methods is not al-ways reasonable, as their application depends on location of an object, ecological factors and others. This research investigates a complex heating, when convection heating of the green-house territory is maintained by temperature using ceiling infrared radiators.  The aim of the paper is to study the influence of the outdoor air temperature, thermal prop-erties of the perimeter walls and soil surface absorbing capacity on the heating power of a greenhouse within the proposed method of radiant and convection heating. A system of complex heatand material-balance equations is used to calculate the greenhouse perimeter walls and the soil surface.  The research results show the dependency of the total heating power when calculated with regard to the outdoor temperature, heat resistance properties of the perimeter walls and the soil surface absorbing capacity.  The results obtained can be used to justify the efficiency of the radiant and convection heat-ing of the greenhouse in specific climatic conditions.  The scientific novelty of the paper is the proposed method of calculating which accounts of multiple heater reflection, the influence of the mass-exchange process inside the greenhouse as well as the absorbing soil properties.  

The paper analyzes various constructional options for insulation of load-bearing structures of reinforced concrete silo. Based on the analysis, the optimum insulation was selected according to the minimum temperature difference in the wall thickness. Factors affecting the heat-moisture characteristics of the walls of reinforced concrete silo are identified. The influence of heat-conducting inclusions on the heat-moisture characteristics of the building envelope is estimated. The temperature differences in the silo wall thickness are detected. The temperature and humidity are calculated for various design options and the moisture accumulation percentage of the con-struction is calculated for the specified time period.  

Problems of treatment and disposal of industrial wastewater from dairy enterprises exist in Russia and abroad. Industrial wastewater from dairy cannot be discharged even into the do-mestic sewage system. The local sewage treatment units of such enterprises require in detail studying the wastewater quality and supply modes. This article presents such parameters of the wastewater composition as environmental aggressiveness, organic matter, suspended solids, fats, nitrogen, phosphate, and others. It is shown that changes in the qualitative composition of effluents depend on the dairy production processes. A serious problem when choosing a treatment technology is the significant content of organic substances, fats, ammonium, ni-trates and phosphates in the resulting effluent. In addition, effluents are characterized by large fluctuations in quality when dumped in a sewage treatment unit or reagent solutions generated by the equipment flushing. A production process flowchart is proposed for the dairy water dis-posal with the appropriate water treatment for discharge into sewage treatment units.  

The paper presents the analysis of the influence of seasonal freezing and thawing of clay soils on structural deformation. Studies are performed at the construction site of liquefied hy-drocarbon depot terminal. Additional surveys are carried out after the winter construction peri-od. In autumn and winter, loam was frozen at the base of the foundations. In spring and sum-mer, pit soils were soaked with meltand storm-water. On the pit walls erosion developed tie-in flows of meltwater at the bottom of the pit, which led to significant deviations from the de-sign position of the erected depot foundations, which were dismantled, and the concrete prepa-ration for retaining walls was destroyed almost everywhere.  The study shows that the subsidence properties of loams degrade after soaking. It is there-fore unnecessary to reduce drawdown of designed and partially executed expensive measures.  Initially, under the ground horizontal depots and retaining walls pile foundations are con-structed. Finally, foundations are erected in open pits with a depth of 4.0–5.8 m of monolithic reinforced concrete on a natural base. For the latter option, the project requires a large amount of excavation works at the open pit with a volume of about 10 thousand cubic meters and re-placing them by the same volume of compacted coarse-grained marble sand and gravel. It is shown that the most efficient and reliable option are pile foundations with a high grillage and also effective anti-rubble measures developed in TSUAB. In the pile variant, it is proposed to use piles 8 and 9 m long with a permissible load of 250 kN and 260 kN, respectively. The de-veloped proposals can be applied in the construction of the 2nd stage of the depot terminal.  

Purpose: Prediction of geomechanical state of soft-soil foundation of buildings before and after compaction, reinforcement or stabilization. Calculation of parameters of pressure injec-tion while stabilizing the soft man-made soil foundation, development of recommendations for parameter adjustment of pressure injection.

Methods: Numerical methods and computer mod-eling of the soil foundation using the finite element method for studying its geomechanical state of a mining building with regard to heterogeneities of the local geological structure and changes in the physical and mechanical properties of soils.

Research findings: The obtained results are based on engineering and geological surveys of the soil foundation of the mining building composed of man-made bulk soils. The stress-strain state of the soil foundation is simulated. As a result of injection compaction the geomechanical state of the soil mass chang-es.

Practical implications: Recommendations are given for the parameter adjustment of the injection method. It is shown that the pressure injection method is undoubtedly effective for the soil stabilization for buildings.