This paper presents a comparison between non-linear elastoplastic and linear equivalent methods used in the dynamic analysis of the 115m high Narmashir concrete faced rockfill dam.

The crest acceleration and safety factor against cracking of the concrete slab for different levels of seismic loading is compared in each case. The settlement resulting from non-linear analysis is also presented. This research could be considered as a continuation of a paper previously published in 2000 [1].

The literature review is presented by Uddin & Gazetas [2] and Ghanooni Mahabadi & Salehi [1].

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