Building Equivalent Static Earthquake Loading Based on RSA Soil Data and Sondir

Calculation of earthquake loads so far using soil data input from sonder test results refers to the provisions of SNI 1726:2002, while in the current digital era there is a soil detection-based application, namely Response Spectrum Application (RSA) or Indonesian Spectrum Design referring to the provisions of SNI 1726:2019. Based on the differences in the data sources, it is necessary to know whether the results of the earthquake load analysis will be the same or different. This study aims to compare the planning analysis of earthquake loads in high-rise buildings with specifications for reinforced concrete structures using the Equivalent Static Analysis method. Soil data used is the response spectrum data from sonder test results, and the website Indonesian Spectra Response Design or RSA. The results of the analysis show that the earthquake load will be greater on the higher floors. Earthquake load based on analysis of ground sonder data was 23.38% higher on average compared to the results of RSA data analysis. The difference in earthquake loads will affect the difference in the dimensions of the structure, therefore the dimensions of the earthquake-resistant building structure based on the analysis of the soil sonder will be larger, so the building that has been standing since 2002 can be declared safe. Analysis of earthquake loads based on RSA data is easier and more practical, but the results are not yet able to determine the dimensions of the foundation and the depth of the foundation.