## 5 Analysis of the Impact of Ground Motion Parameters on Seismic Response
The model's condition is most critical under the action of earthquakes ZG9 and ZG11, with the maximum interstory drifts occurring on the second and third floors of the structure. This indicates that the building experiences significant displacement on the higher floors under seismic loading, which may imply potential structural concerns. For the Dubrovnik scenario, the maximum interstory drift values are indicated in Table 8 based on Table 6, along with the corresponding behavioral zones in order to draw conclusions regarding the performance of this type of building in the observed seismic area. The building model is in its most critical condition when subjected to the earthquake DU6, with the highest interstory displacements occurring on the second and third floors of the structure. However, exceptions are observed in earthquakes DU4, DU6, and DU30, where the interstory displacement values are also significantly high on the first floor of the building. This suggests that while higher floors generally experience the largest displacements, certain earthquake records exhibit a more uniform distribution of displacements across the different floors, indicating a more complex structural response under specific seismic conditions. In analyzing the graphs comparing the curves of earthquake record characteristics and maximum interstory displacements, the objective is to find a curve trajectory that is as similar as possible. More specifically, the goal is for the trajectory of the earthquake record characteristic curve to closely follow the trajectory of the maximum interstory displacement curve. Additionally, the jumps and dips in both curves should occur at the same points, indicating a strong correlation between certain characteristics of the earthquake records and the resulting structural displacements. Traditional metrics, including peak ground acceleration (PGA), peak ground velocity (PGV), and peak ground displacement (PGD) (Figure 9) were evaluated. Accordingly, the conclusions of the comparisons are as follows:  
* PGA vs. IDR: notable peaks in PGA (e.g., ZG11 and DU6) coincide with spikes in IDR, though some locations exhibit high PGA with moderate IDR values. * PGV vs. IDR: A stronger relationship is visible, as locations with high PGV values show significant IDR spikes. PGV trends align well with IDR trends, confirming the medium-strong correlation. * PGD vs. IDR: DU locations exhibit higher PGD values, especially at DU6, correlating with substantial IDR increases. ZG locations have more non-uniform PGD values with occasional peaks influencing the IDR. \begin{table}
\begin{tabular}{c c c c c c c c c c c c c c c} \hline \hline
**Floor** & **DU1** & **DU2** & **DU3** & **DU4** & **DU5** & **DU6** & **DU7** & **DU8** & **DU9** & **DU10** & **DU11** & **DU12** & **DU13** & **DU14** & **DU15** \\ \hline
**4** & 0.43 & 0.46 & 0.33 & 0.44 & 0.21 & 0.60 & 0.16 & 0.31 & 0.22 & 0.17 & 0.10 & 0.17 & 0.17 & 0.24 & 0.13 \\ \hline
**3** & 0.61 & 0.94 & 0.57 & 1.05 & 0.45 & 2.39 & 0.34 & 0.34 & 0.29 & 0.34 & 0.09 & 0.33 & 0.29 & 0.43 & 0.18 \\ \hline
**2** & 0.65 & 0.92 & 0.51 & 1.18 & 0.56 & 2.61 & 0.30 & 0.27 & 0.35 & 0.28 & 0.06 & 0.35 & 0.29 & 0.47 & 0.18 \\ \hline
**1** & 0.60 & 0.69 & 0.34 & 1.12 & 0.39 & 2.36 & 0.18 & 0.17 & 0.28 & 0.16 & 0.06 & 0.19 & 0.21 & 0.26 & 0.11 \\ \hline
**Floor** & **DU16** & **DU17** & **DU18** & **DU19** & **DU20** & **DU21** & **DU22** & **DU23** & **DU24** & **DU25** & **DU26** & **DU27** & **DU28** & **DU29** & **DU30** \\ \hline
**4** & 0.16 & 0.12 & 0.19 & 0.38 & 0.35 & 0.27 & 0.28 & 0.35 & 0.38 & 0.36 & 0.40 & 0.18 & 0.33 & 0.37 & 0.52 \\ \hline
**3** & 0.16 & 0.10 & 0.19 & 0.83 & 0.74 & 0.47 & 0.17 & 0.30 & 0.75 & 0.38 & 0.93 & 0.24 & 0.39 & 0.59 & 1.22 \\ \hline
**2** & 0.11 & 0.07 & 0.16 & 0.79 & 0.79 & 0.40 & 0.17 & 0.20 & 0.95 & 0.28 & 0.86 & 0.24 & 0.38 & 0.62 & 1.19 \\ \hline
**1** & 0.08 & 0.06 & 0.13 & 0.55 & 0.49 & 0.27 & 0.14 & 0.13 & 0.91 & 0.28 & 0.60 & 0.13 & 0.30 & 0.51 & 0.90 \\ \hline \hline \end{tabular}
\end{table} 
Table 8: Values of IDR for Dubrovnik scenario.