Determination of the actual category of the technical condition of building structures is the main purpose of the survey. At the same time, the reliability of the survey results depends on the volume of instrumental measurement of the monitored parameters, which should be minimal, but sufficient to obtain data with a given level of security. This article presents a methodology for de-termining the scope of control based on a statistical approach with justification of the necessary and sufficient number of tests for each type of survey. The approbation of the described approach in the survey of precast concrete ele-ments is presented. The proposed methodology is based on a statistical approach adopted at the international level, which allows work to be carried out in other countries.

Keywords: inspection of building structures, instrumental control, statistical justification, precast concrete

Accelerating the pace of construction of modern and affordable housing with energy efficiency class not lower than B +. This implies the creation of technologies that contribute to an increase in the production of relatively inexpensive heat-shielding materials produced from mineral melts, and used in the construction of flat roofs or used coatings. The developed materials possess a complex of valuable operational properties. There is a significant improvement in the characteristics of the material characteristics - thermal conductivity, compressive strength, water absorption by weight and cold resistance. Improving the insulating properties is enhanced when additives are present in the formulations that saturate the system with lead oxide.

Keywords: energy efficiency, heat protection, silica opoka, fluxing additives, silicon, calcium, high-temperature foaming