Comparison of Vs30 Based on SPT-N and CPT-u Data : Case Study of Semarang Coastal Zone

Abstract Semarang coastal zone is one of the essential area in Indonesia. The included ports and other land access that passes through coast, city’s central point rapid development. characteristic soil crucial parameters for base supporting regional planning, which growing fast by time. Currently, capacity according to SNI 1706-2019 can refer Vs30 data. As we know, data provides an overview seismicity area. main issue empirical relatively expensive acquire. Thus, many practitioners use a method correlating from CPT-u or SPT-N. study approached derived then compared with result shows value N-SPT have similar range determining hazard particularly within