The new concept in designing structures to achieve a specified performance limit state was first introduced in New Zealand, in 1993. Over the following years, USA and Europe have put a great effort focused on research and development of the concept as a viable and logical alternative to the current forcebased code approaches. The paper presents the theory and application of this method using a reinforced concrete frame structures as an example. The frame structure is designed with implementing Eurocode 8 regulations. Furthermore, results obtained using direct displacement based design method are compared to the ones obtained using multimodal response spectrum method. Among other things, significant differences are highlighted in regard to current design regulations.
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