## 2 Materials and Methods
### Turkish Rapid Assessment Method for RC Structures-2019
\begin{table}
\begin{tabular}{c c c} \hline \hline
**Hazard Zone** & \(S_{DS}\) & **Local Soil Class** \\ \hline I & \(S_{DS}\geq\)1.0 & ZC/ZD/\(ZE\) \\ \hline II & \(S_{DS}\geq\)1.0 & ZA/\(ZB\) \\ \cline{2-3} II & \(1.0\geq S_{DS}\geq\)0.75 & ZC/ZD/\(ZE\) \\ \hline III & \(1.0\geq S_{DS}\geq\)0.75 & ZA/\(ZB\) \\ \cline{2-3} III & \(0.75\geq S_{DS}\geq\)0.50 & ZC/ZD/\(ZE\) \\ \hline IV & \(0.75\geq S_{DS}\geq\)0.50 & ZA/\(ZB\) \\ \cline{2-3} IV & \(0.50\geq S_{DS}\) & All kinds of soils \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Determination of earthquake hazard zone for RC structures [71]. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & \multicolumn{4}{c}{**Base Score (TP)**} & \multicolumn{4}{c}{**Structural System Score (\(YSP\))**} \\ \cline{2-6}
**Total Number of Story** & \multicolumn{4}{c}{**Hazard Zone**} & \multicolumn{4}{c}{**RCF**} & **RCF + RC Shear Walls** \\ \cline{2-6}  & **I** & **II** & **III** & **IV** & \\ \hline
1–2 & 90 & 120 & 160 & 195 & 0 & 100 \\ \hline
3 & 80 & 100 & 140 & 170 & 0 & 85 \\ \hline
4 & 70 & 90 & 130 & 160 & 0 & 75 \\ \hline
5 & 60 & 80 & 110 & 135 & 0 & 65 \\ \hline
6–7 & 50 & 65 & 90 & 110 & 0 & 55 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Base (TP) and structural system scores (YSP) for RC structures [71]. Figure 1: Parameters taken into account in the rapid evaluation method. After these values are determined, a number of structural characteristics that affect the earthquake performance of buildings and cause damage are taken into account, as presented below. **Type of the structural system**: It is the first parameter taken into consideration, and one of the reinforced concrete frame (RCF) and reinforced concrete frame + RC shear walls (RCF + RC Shear Walls) systems is selected as the load-bearing system of the building. Here, an additional structural system score is added, taking into account the effect of RC shear walls in resisting earthquake loads. If this situation cannot be detected, it would be appropriate to choose RCF. Schematic representations for these two different structural systems are shown in Figure 2.  
**Total number of storeys:** It is the total number of storeys in a building, which is one of the causes of damage in earthquakes. In the method, the number of free storeya is determined in line with the principles given schematically in Figure 3.  
**Building visual quality:** The apparent quality of the building reflects the importance given to the quality of materials and workmanship and the maintenance of the building. The apparent quality of the building is classified in three different ways: good, medium, and bad. **Soft/weak storey:** It is determined observationally, taking into account the difference in storey height as well as the significant stiffness difference between storeys. Situations to be taken into account for determining the soft/weak-storey situation are shown in Figure 4. The concept of the relatively soft/weak storey is mentioned here. It should not be forgotten that detailed structural analyses are required to clearly reveal this situation in any structure. **Vertical irregularity:** It is taken into account to reflect the effect of vertically discontinuous frames and changing storeys areas. Columns or shear walls that do not continue along the height of the building create vertical irregularities. The detection of vertical irregularity is shown in Figure 5.  
Figure 3: Determination of the number of storeys in RC structures. Figure 2: Types of the structural systems for the RC buildings. **Heavy overhangs:** The difference between the floor area on the ground and the floor area above the ground will be determined. The detection of heavy overhang is shown in Figure 6.  
**Irregularity in plan/torsion effect:** It is defined as the plan not being geometrically symmetrical and the vertical structural elements being placed irregularly. Plan irregularities that may cause torsion in the building are taken into account.