The use of renewable energy sources is an integral part of ensuring the engineering safety of buildings and structures. The article provides a brief study of the sources of electrical energy generated by the energy of rivers, dams and thermal energy of the Earth in Iraq, examines the most important rivers in Iraq and their storage in order to maintain a clean environment and simultaneously generate electricity. The results of Iraq's hydropower analysis revealed the need to build dams on the Tigris and Euphrates rivers for water storage and energy production to maintain environmental cleanliness. The study details the benefits of building dams for many purposes, including irrigation of agricultural land, prevention of natural disasters and conservation of the environment.

Keywords: renewable energy sources, eco-energy, hydroelectric power, construction, organizational and technological support

The design of a mobile complex for the construction of winter roads with the selection of the main working units has been developed, an analysis of the effectiveness of the application has been carried out and the ways of further development have been considered. An assessment and a detailed analysis of existing mobile snow-melting machines was carried out, the problem of the quality of winter roads was analyzed, ways to improve the quality of temporary winter roads were considered and the most effective was identified, the principle of operation of the proposed design, advantages were described, the main parameters of equipment were calculated, the calculation and selection of working units were made, and the power balance of the mobile complex is also calculated.

Keywords: winter road, snow-melting unit, mobile machines, calculation of snow-melting unit, efficiency

According to the World Health Organization (WHO), air pollution from solid particles, which causes numerous diseases, leads to several hundred thousand premature deaths in the European Union and up to three million in the world, is one of the most serious problems for humanity. This article presents the oldest and most commonly used dust control method in the industry for the transport of bulk materials, which is the use of wet liquid spraying systems. The key factors contributing to the fight against dust are indicated, the possibility of using surfactants is considered. The authors investigate such an urgent problem today as the further development and study of methods of dust removal in industrial construction. The main place in the article is occupied by the issue of increasing the efficiency of the process of air dedusting by low-pressure irrigation. A method for a mathematical description of this process is proposed. The work contains tables and formulas that allow tracing the process of mathematical transformations. The authors of the article present the results of their research, the final result of which is a mathematical description of the dependence of the efficiency of the dedusting process with low-pressure irrigation, taking into account the accepted assumptions and boundary conditions. At the end of the work, it is concluded that formulas have been obtained for improving the applied method of transportation using bulk materials by a belt conveyor.

Keywords: air, dust, transportation, bulk construction materials, heating, fertilization system, mathematical modeling, low-density cultivation, ecological safety, fine-grained particles