Introduction. Lightweight thin–walled steel structures are thin steel building structures used for the construction of prefabricated buildings and structures. This type of building structures is becoming more and more in demand by the construction industry. However, at present, the main conditions for the introduction of buildings and structures from LTSS into the practice of earthquake-resistant construction may be assessments of their strength, rigidity and resistance to seismic influences based on the results of experimental studies.

The aim of the study: to study the behavior of wall panels made of light thin-walled steel structures (LTSS) under the influence of horizontal and vertical loads.

Materials and methods. The tests were carried out using the step-by-step loading method to determine the effect of nodal joints and vertical connections of various types (A-shaped, K-shaped, X-shaped).

Results. The tests showed the dependence of the bearing capacity and deformations of the panels on structural factors and the presence of defects. The developed recommendations for the modification of nodal joints have made it possible to increase the reliability of structures, which has been confirmed by repeated tests. Conclusions. The data obtained serve as a basis for improving the design and installation of LTSS panels.

The article presents the results of vibration tests of a three-story building made of light gauge steel сonstructions, a comprehensive analysis of the results of experimental data and calculation results of a representative building, as well as the possibility of using LGSC systems in construction in the Kyrgyz Republic.