Removing masonry infill walls from the ground or lower stories of buildings to make more open spaces, may lead
to forming soft-story structural irregularities. Since considering the masonry infill walls as non-structural components
is a common assumption in the evaluation of the seismic demand of buildings, there is a lack of
knowledge dealing with the influence of the soft-story effect on the seismic response. In this study, the performance
of 4-, 8-, and 12-story moment-resisting reinforced concrete frames with and without a ground soft story is
compared first. Then, a proposal including the use of a yielding dissipater device to retrofit soft-story buildings is
presented. The low cost, the simple manufacturing technology, and the same behavior in tension and
compression, which makes the new axial force not imposed on the columns, are some of the advantages of this
device. In order to assess the seismic performance of the proposed system, incremental dynamic analysis was
conducted on the frames. Five states were considered for each frame: (a) bare frame, (b) fully-infilled frame, (c)
ground soft-story frame, (d) and (e) retrofitted frames with two different configurations of yielding dissipater
devices in the ground soft story. The responses of the structures are compared in terms of capacity curves,
progressive damage curves, inter-story drifts, and story damage values. The results demonstrate that the frames
equipped with the yielding dissipater devices experience higher lateral load capacity, lower overall damage,
lower drift, and a lower damage value in the ground story than the soft-story ones.