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Abstract. This paper considers the seismic responses of acceleration-sensitive non-structural components (NSCs stories, i.e., 5, 7, 10, 13, and 15-storeys . The P-structures were designed by the authors according to the full seismic provisions of Eurocode 8 (EC8). Distributed inelastic fibre elements are adopted to model the beams and columns of the Pstructures. To simulate NSCs in P-structures, vertical cantilever beams fixed at their bases with masses on top are modelled with variety of lengths to adjust their natural frequencies to the natural frequencies of the P-structures. Full dynamic interaction is considered between the NSCs and P-structures during the analyses. A comparison is made between the numerical results and the EC8 formulation, and a general conclusion is drawn that the provisions of EC8 for design of NSCs are un-conservative in some cases. 3875A. Aldeka, AHC. Chan and S. Dirar