To realize in practice
theoretical research and to really raise the reliability of structures it is necessary to
make changes in codes.

The formula for definition of seismic forces in a more general view, applicable to the
different models is offered. In a specific case formula (7) transforms into the known
normative formula for the definition of seismic forces for one-dimensional (cantilever)
models. While using three-dimensional models it is necessary to take into account the
non-uniformity of the field of soil according to the length and the width of the building
(structure).

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**Y.I. Nemchynov**

**ABSTRACT: **Basic
problems of improvement of the construction norms in seismic regions of Ukraine are
presented in the article. State of development of the norms in the countries of
Commonwealth of Independent States including creation of the International construction
norms on earthquake-resistant construction is considered. The structure of the suggested
National norms of Ukraine (DBN) is shown and basic principal statements of the developed
document (the first revision) are described.

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