The paper presents the results of dynamic tests of the administrative building with a stationary seismic isolation system on rubber-metal supports in Irkutsk by the method of standing waves. The dynamic characteristics of the building (periods, frequencies, amplitudes, phases of oscillations) for different forms of natural oscillations are determined. The comparison of the frequencies of Building 2 obtained by direct method with the calculated ones obtained at the design stage is carried out. The analysis of the influence of rubber-metal supports on the natural oscillations of Building 2 is carried out. The estimation of seismic stability of the building relative to the probable seismic loads is given.

It is proved that the capacities of external shock-proof devices may be more efficient than conventional seismic isolation (inside buildings). There is an underestimation of these opportunities, including provisions of current regulations that do not even comprise the relevant concepts.
The experience of extant ancient structures is underestimated, as well as the examples of unique contemporary earthquake-resistant structures.
On the basis of computer and physical laboratory modeling it is shown that arrangement of a sliding layer under the continuous foundation plate can serve as the external design seismic protection  barrier with the design seismic action (for example, not higher than 5 points) not transferred to the  building above the barrier level.