In this paper, an attempt is made to assess some of the important seismic provisions and specifications of the 1995 Ethiopian Building Code Standard (EBCS 8) from the perspective of the theory of structural dynamics and principles of earthquake engineering. For this purpose, a concise but thorough and lecture-note-type theoretical background is provided on the vibration of discrete mass systems. Only horizontal earthquake excitation of the systems is treated, as this causes the most important effect on building structures. Many concepts that are unknown to the average structural designer, but specified by the code for strict adherence, are clarified. The use of the design spectra annexed by the code for use in dynamic analysis is well illustrated and compared with early research results using an example problem. Important conclusions are drawn and some recommendations made.
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