As a rule, public buildings should have higher safety level compared to residential ones. Hence, using base isolation
systems is an effective and widely known way for improving dynamic response of such buildings. The idea of base
isolation was known hundreds years ago, however practical implementation of base isolators started in the last few decades.
The main advantage of a base isolation system is that no elements should be added to an isolated building, which is
especially important for heritage architecture, forming a part of public buildings. Traditional base isolation system is obtained
by using two main base isolator types – elastomeric bearings or friction pendulums. Hundreds of buildings all over
the world are provided by such isolators and proved enhanced dynamic behavior. Design of base isolation systems and selection
of their properties usually depend on dynamic characteristics of the isolated building. The last can be obtained, for
example, by non-destructive impulse testing of the structure before its protection. An appropriate method for structural
dynamic parameters experimental estimation was developed by the authors. For this reason an impulse test was carried
out on a three-story structural part of a building designed for a seismic region. Another method, which is also discussed in
the paper, is based on seismic monitoring of a building in a waiting regime. In some cases the displacements at the base
isolation level are rather big and exceed the allowed limits. In such cases it is recommended to add dampers to the base
isolation system. Effective variable friction dampers were proposed and tested by the authors. These dampers significantly
reduce the displacements between the first floor column and foundation and additionally yield further improvement in the
structural seismic response.