With Python

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 (V3)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 (Vs) 30 values. Table 1. Local site classes in TSDC 2019 Site (VS)30 class Soil type (m/s) ZA Intact rock > 1500 ZB Weathered rock 760 - 1500 ZC Very dense sand / Hard clay 360 - 760 ZD Medium sand / Stiff clay 180 - 360 ZE Loose sand / Soft clay