The article provides a comprehensive analysis of defects in monolithic reinforced concrete structures, commonly encountered during the construction of multi-storey buildings. The main types of defects and damage are discussed, such as cracks, concrete spalling, destruction of the protective layer, exposure and corrosion of reinforcement bars, formation of cavities, concrete overflow, gravelly texture, geometric deviations, and cold joints in concreting. Their general description, causes of occurrence, classifications, parameters, and consequences for the operational characteristics of the structures are presented. Special attention is given to modern diagnostic methods and repair technologies, which significantly extend the service life of buildings and enhance their safety throughout their lifecycle. The results presented can be used by engineers, builders, and repair specialists to optimize construction processes, control the quality of work, and ensure the timely elimination of identified defects.

Keywords: Inspection of structural elements, reinforced concrete, defects of monolithic structures, cracks, reinforcement corrosion, repair, concrete quality, cold joint, monolithic construction, concrete surface quality

The article analyzes the issues related to the implementation of construction control at the facilities of existing enterprises during their reconstruction. The authors conduct the research based on the use of methods of scientific analysis, synthesis, generalization and systematization. The work uses domestic and foreign scientific sources, examines the experience of advanced construction control technologies and their implementation practices. Special attention is paid to the use of digital technologies, such as monitoring systems, automated controls and modern software solutions. The theoretical basis of the research was scientific works on construction control, regulatory legal acts and standards, as well as publications on modern methods and approaches to the reconstruction of enterprises. The empirical part is based on the analysis of real data on construction control at enterprises, including identifying problems and evaluating the effectiveness of applied solutions. As a result of the research, an optimized structure of construction control has been developed, innovative technologies and recommendations for their implementation have been proposed. The effectiveness of the new model has been evaluated, showing its advantage over existing approaches. The theoretical significance lies in an in-depth understanding of modern methods for performing construction control, including the use of digital technologies. The practical significance of this work lies in the potential of applying the proposed solutions to improve the quality of enterprise reconstruction, which in turn contributes to the sustainable development of industry and the reduction of operational risks.

Keywords: construction control, operating company, reconstruction, entrance control, operational control, acceptance control

Construction in the Far North presents a unique challenge requiring the adaptation of technologies, materials and methods to extreme climatic conditions. The article analyzes the world experience, including geotechnical research, architectural solutions, infrastructure and environmental aspects. Examples of successful projects are given, which illustrates the effectiveness of using modern technologies and methods to ensure sustainable development in the North regions. A system of criteria for assessing the level of large-scale construction in the Far North conditions is proposed.

Keywords: construction, technology, northern territories, low resource consumption, waste minimization, minimization of environmental impact, modular construction, system of criteria