The problem of energy saving in the construction industry involves the installation of additional thermal insulation of enclosing structures. But the thickness of the exterior wall structure has a limit. After a certain thickness, the monetary cost of insulation will grow more slowly than the amount saved on heating. On the other hand, a large chain of participants in energy-saving investment projects (IEP) leads to a significant payback period. It is proposed to use the technology of internal insulation of external walls with a minimum number of participants in the IEP. The calculation of the economic effect is given. The IEP assessment should be carried out taking into account energy consumption throughout the entire life cycle of the proposed building structure.

Keywords: energy saving, energy efficiency of structures, discount rate, energy service.

The paper considers the choice of the optimal technology for the construction of tongue-and-groove fencing based on the hierarchy analysis method. Decision-making in construction practice requires consideration of many factors, including internal (cost, reliability, speed of work) and external local conditions (risk of interruptions in the supply of materials, the influence of weather conditions, work in cramped conditions). The hierarchy analysis method makes it possible to formalize the decision-making process by structuring the task in the form of a hierarchy and comparing alternatives in pairs. In the course of the study, a comparative analysis of the technologies of hammering, vibration immersion and static indentation of sheet piles was carried out. Priority vectors for each criterion were calculated, and the consistency of the matrices was checked. The final choice of technology is justified based on the integration of internal and external factors. The results obtained allow us to recommend the optimal technology that takes into account the technical and organizational features of the construction process.

Keywords: tongue-and-groove fencing, technology selection, hierarchy analysis method , selection criteria, construction technologies, pairwise comparison, priority vectors

The article considers the sequence and technology of conducting surveying before starting excavation work on a bush site for the oil and gas industry. Surveying works play a key role, ensuring the necessary accuracy and reliability of the development of oil and gas fields. These works include conducting field measurements, detailed terrain analysis, calculating the volume of soil masses involved in the construction of earthworks, as well as monitoring geometric parameters and sand pits. An important stage of surveying is the creation of a detailed topographic map of the territory. Based on this map, it is possible to accurately plan the location of all future structures, ensuring optimal use of space and compliance with all regulatory requirements. The use of modern technologies, such as geodetic GPS systems and BIM technology, can significantly improve the accuracy and efficiency of these works. Special attention is paid to compliance with industrial safety standards, which minimizes costs and risks in the development of oil and gas industry enterprises. Thus, surveying is an integral part of the preparation and implementation of projects in the oil and gas field, contributing to the efficient and safe performance of all necessary work.

Keywords: surveying, engineering geodesy, earthworks, development of oil and gas fields, bush site, executive survey

This article discusses effective ways and means for analyzing the condition of real estate objects, as well as predicting changes in their operational properties over time. These approaches open up prospects for improving the accuracy of predictions of wear patterns of both physical and functional components, as well as the aging of building structures, structures and engineering systems. Ultimately, this helps to maintain the proper level of their work and ensure high-quality functioning. Considerable attention is also paid to the general kinetic theory of structural wear of construction facilities, as it is known that this theory makes it possible to assess the corresponding reliability risks with fairly high accuracy, depending on the service life of the building structures of the facility. As a research tool, it is proposed to use a universal mathematical model of wear, which illustrates the dynamics of the processes of structuring and destruction of building systems throughout their entire service life. The model reflects the constant interaction of the structure with long-term impact factors. A statistical model has also been developed to determine the probability of the transition of building elements to a state of destruction due to the influence of adverse factors, which is directly related to the loss of their reliability.

Keywords: organizational and technological solutions, reliability, quality control, efficiency, cost, labor productivity