THE THE COMPARATIVE STUDY OF DESIGN SPECTRA IN WEST SUMATRA PROVINCE IN SNI 1726:2012 WITH SNI 1726:2019

Abstract

The current earthquake resistance planning procedure for building and non-building structures is SNI 1726:2019 as a revision of the earthquake resistance planning procedure for building and non-building structures SNI 1726:2012. SNI 1726:2019 is based on the 2017 Earthquake Area Map and adopts the provisions of ASCE 7-16 with several modifications adapted to Indonesian conditions while SNI 1726:2012 refers to the ASCE 7-10 code and the 2010 Indonesian Earthquake Map. There are several design response spectral parameters and design spectral acceleration (S₁, S_s, F_a, F_v, S_DS, and S_D1) measured and observed in this study. This paper aims to compare the design response spectral acceleration parameters of SNI 1726:2012 with SNI 1726:2019 in regencies/cities in West Sumatra Province. The results of the study indicate that the spectral response value of the MCER earthquake acceleration for short periods (S_s) The parameter value of the MCER earthquake acceleration spectral response has increased with a percentage ranging from 0.92% - 24.71% in 10 cities/regencies. with the highest increase occurring in Bukittinggi, 5 cities/regencies. experienced a decrease with a percentage ranging from 1.67% - 20.51%. The spectral response value of the MCER earthquake acceleration for a period of 1 second (S₁) experienced an increase with a percentage ranging from 0.3% - 23.5% in 7 cities/regencies. with the highest increase occurring in Bukittinggi, 6 cities/regencies. experienced a decrease with a percentage ranging from 4.2% - 21.25% with the highest decrease in Tanah Datar Regency (Batusangkar).