By Miha Tomaževič

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The dependence of acceleration response amplitudes on the type of ground motion can be clearly seen in Figs. 9, which show the response spectra derived from ground acceleration records shown in Fig. 7. Masonry buildings represent typical rigid structures with short periods of vibration. In such a case, most data needed for structural verification and design can be obtained directly from ground acceleration records, which in many cases simplifies the assessment of seismic loads and seismic resistance verification.

The units are dried under the sun [3]. ) are still used for the construction of masonry walls. e. square dressed units with parallel horizontal faces, is allowed for the construction of masonry buildings in seismic zones. Traditional stone-masonry construction with two outer layers of uncoursed stone with an inner infill of rubble stones is not considered to be earthquake resistant. In any case, natural stone units are considered as units, where Category II of manufacturing control values of partial safety factors for material properties are taken into account.

10. The values Se(T) are determined by a set of expressions, depending on the first natural period of vibration of the structure under consideration: if 0 < T

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