The characteristics of the earthquakes fired are provided inprototype scale in Table 3 for the structure–damper configurations shown in model scale in Fig. 2. As indicated in Table 3, the duration of all single frequency earthquakes was kept the same at 20 s. In addition to the earthquakes shown in Table 3, air hammer tests were carried out at 50 g
and changes in the overall soil depth were recorded during centrifuge swing-ups (1-50 g) and swing-downs (50-1 g).
The average shear wave velocity for the overall soil depth measured following Ghosh and Madabhushi [20] is also shown in Table 3 for each centrifuge flight. Only one test with a ‘tuned’ configuration is necessary to allow for a direct comparison with a ‘de-tuned’ configuration on the effects of structural response for the same soil