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The Importance of Response Spectrum in Seismic Design. It is undoubtedly a primary approach to structural design. The main objective of this article is to provide a clear conceptual definition of the design spectrum. It seeks to help readers understand how this concept is crucial for estimating seismic loads and ensuring the safety of buildings and infrastructure in the presence of earthquakes of various magnitudes. Methods and Techniques Used. This paper follows a theoretical and explanatory approach, using fundamental concepts of structural engineering, showing them in a simpler way. Recalling how these diagrams were developed and how they are implemented in the ASCE 7-05 standard and the Panamanian Structural Regulation REP 2021. No experimental methods or specific techniques are used, but a technical, investigative and conceptual analysis. Development: 55% of the students who graduated from the building engineering or infrastructure engineering courses of the engineering faculty during conversations had doubts about the origin of the graph and how it was interpreted in professional practice. Our interest is to provide a simple form, based on current regulations and demonstrate that this concept, is key to the design by resistance and service of structures in our country. Conclusions: Understanding its definition and the way it is constructed according to current regulations is the way to estimate the seismic demand.
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