150 M. M. Akhlaghi et al. 15.2 Analysis The 5-story masonry infilled reinforced concrete building of the National Society of Earthquake Technology (NSET), is chosen for this research study. Ambient vibration data has been collected following the 2015 Gorkha earthquake using a set of 16 accelerometers. The structure is also equipped with a continuous monitoring system which has recorded the acceleration data at the 4th floor and ground level during the earthquake [4]. Figure 15.1 shows the street view and the plan view of the building, depicting the location of the masonry and shear walls in the plan view. System identification had been conducted using an output only method and eigenfrequency and mode shapes of the building are calculated. A 3D model of the building is built following a recently proposed methodology [5, 6] based on the Fig. 15.1 NSET building from the street view and the plan Fig. 15.2 Response prediction of the 4th floor based on the deterministic model updating results
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