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4) According to the Turkish Seismic Design Code (TSDC 2019), the local site classes are defined as ZA, ZB, ZC, ZD, ZE and ZF, depending on the mean shear wave velocity (VS)30 of the uppermost 30 m of the soil/rock profile. Table 1 below shows the local site classes and soil types for the given (V)30 values, Table 1. Local site classes in TSDC 2019 Table 2. Test results for the site Soil type Depth V, Site class ZA ZB (m/s) 234 350 (V.)30 (m/s) > 1500 760 - 1500 360 - 760 180 - 360