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Building codes follow a common concept in designing buildings to achieve an acceptable seismic performance. The objective underlying the concept is to ensure that the buildings should be able to resist minor earthquake without damage, resist moderate earthquake with some non-structural damage, and resist major earthquakes without collapse, but some structural as well as non-structural damage. This study aims to evaluate the performance-based seismic to come up with necessary recommendations for both future practices, essential review, and restoration of existing structures in Yemen. To do this real case studies incorporated, and nonlinear pushover analysis is carried out. The analysis results presented and then assessed to find out the conformity with the required performance. The structural sections assumed at the beginning of the design, then the design repeated many times to achieve the selected performance criteria (the plastic hinge properties and the maximum displacement).

The seismic hazard analyses for Yemen have attracted the attention of researchers during the last two decades. However, the studies are limited and mainly use deterministic or approximate conventional probabilistic approaches. The conclusions drawn from these studies do not fit with current seismic design codes (International Building Code). This article presented the method and findings of a probabilistic seismic hazard assessment for Yemen in accordance with current seismic design building regulations. All the data sources, available nationally and internationally, were utilized in compiling earthquake database by covering the recent records and the seismic activity maps of the study region. The study area was regionalized to 11 seismotectonic area sources on the basis of the seismicity maps and available tectonic maps. On the analytical side, the earthquake recurrence analysis was evaluated for each source, and logic tree concept was used to model the seismic sources that may have significant effect on seismic hazard evaluation of Yemen as a combination of area and line sources. A probabilistic forecasting model was formulated, appropriate ground motion attenuation relationships were used, and seismic hazard contour maps were developed for the entire Yemen area. The maps present dense contours of peak ground accelerations and short and long period spectral accelerations for different return periods. The highest predicted seismic hazard is found in Dhamar City. This study provides basic and essential requirements that will be valuable in developing advanced seismic design criteria for Yemen.

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