Site coefficient and design spectral acceleration evaluation of new Indonesian 2019 website response spectra
Calculation of site coefficient and design response spectral acceleration are two important steps in the seismic design of buildings. According to Indonesian Seismic Code 2019, two information requirements for site coefficient calculations are the site soil class and Risk-targeted Maximum Considered...
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Faculty of Engineering, Universitas Indonesia
2022
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my.utm.1016352023-07-03T03:02:53Z http://eprints.utm.my/id/eprint/101635/ Site coefficient and design spectral acceleration evaluation of new Indonesian 2019 website response spectra Partono, Windu Irsyam, Masyhur Nazir, Ramli Asrurifak, Muhammad Sari, Undayani Cita TA Engineering (General). Civil engineering (General) Calculation of site coefficient and design response spectral acceleration are two important steps in the seismic design of buildings. According to Indonesian Seismic Code 2019, two information requirements for site coefficient calculations are the site soil class and Risk-targeted Maximum Considered Earthquake (MCER-SS for short and MCER-S1 for long period) spectral acceleration. Three different hard/SC, medium/SD and soft/SE are typically site soil classes used for building designs. Two different site coefficients (Fa for MCER-SS and Fv for MCER-S1 spectral acceleration) are used for surface and design response spectral acceleration calculations. The Indonesian Seismic Code provides two (Fa and Fv) tables for calculating site coefficients. If the MCER-SS or MCER-S1 values developed for a specific site are not exactly equal to the values in Fa or Fv tables, the site coefficients can then be predicted using straight-line interpolation between the two closest Fa or Fv values within the tables. When the straight-line interpolation is adjusted for Fa or Fv calculation, different results were observed in comparison to the values developed using website-based software (prepared by Ministry of Public Works and Human Settlements). This study evaluates site coefficients and design response spectral acceleration predictions in Semarang City, Indonesia, according to straight-line interpolation method and website software calculations. The study was conducted at 203 soil boring positions in the study area. The site soil classes were predicted using average standard penetration test values (N-SPT) of the topmost 30 m soil deposit layer (N30). Three different site soil classes were observed in the study area. On average, the largest differences between the two analysis (linear interpolation and website) methods in the site coefficient values and design response spectral acceleration calculation were observed for the SD and SE classes. However, for the SC site soil class, the difference was small, with their values approximately similar. Faculty of Engineering, Universitas Indonesia 2022 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/101635/1/RamliNazir2022_SiteCoefficientandDesignSpectral.pdf Partono, Windu and Irsyam, Masyhur and Nazir, Ramli and Asrurifak, Muhammad and Sari, Undayani Cita (2022) Site coefficient and design spectral acceleration evaluation of new Indonesian 2019 website response spectra. International Journal of Technology, 13 (1). pp. 115-124. ISSN 2086-9614 http://dx.doi.org/10.14716/ijtech.v13i1.4132 DOI: 10.14716/ijtech.v13i1.4132 |
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TA Engineering (General). Civil engineering (General) Partono, Windu Irsyam, Masyhur Nazir, Ramli Asrurifak, Muhammad Sari, Undayani Cita Site coefficient and design spectral acceleration evaluation of new Indonesian 2019 website response spectra |
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Calculation of site coefficient and design response spectral acceleration are two important steps in the seismic design of buildings. According to Indonesian Seismic Code 2019, two information requirements for site coefficient calculations are the site soil class and Risk-targeted Maximum Considered Earthquake (MCER-SS for short and MCER-S1 for long period) spectral acceleration. Three different hard/SC, medium/SD and soft/SE are typically site soil classes used for building designs. Two different site coefficients (Fa for MCER-SS and Fv for MCER-S1 spectral acceleration) are used for surface and design response spectral acceleration calculations. The Indonesian Seismic Code provides two (Fa and Fv) tables for calculating site coefficients. If the MCER-SS or MCER-S1 values developed for a specific site are not exactly equal to the values in Fa or Fv tables, the site coefficients can then be predicted using straight-line interpolation between the two closest Fa or Fv values within the tables. When the straight-line interpolation is adjusted for Fa or Fv calculation, different results were observed in comparison to the values developed using website-based software (prepared by Ministry of Public Works and Human Settlements). This study evaluates site coefficients and design response spectral acceleration predictions in Semarang City, Indonesia, according to straight-line interpolation method and website software calculations. The study was conducted at 203 soil boring positions in the study area. The site soil classes were predicted using average standard penetration test values (N-SPT) of the topmost 30 m soil deposit layer (N30). Three different site soil classes were observed in the study area. On average, the largest differences between the two analysis (linear interpolation and website) methods in the site coefficient values and design response spectral acceleration calculation were observed for the SD and SE classes. However, for the SC site soil class, the difference was small, with their values approximately similar. |
format |
Article |
author |
Partono, Windu Irsyam, Masyhur Nazir, Ramli Asrurifak, Muhammad Sari, Undayani Cita |
author_facet |
Partono, Windu Irsyam, Masyhur Nazir, Ramli Asrurifak, Muhammad Sari, Undayani Cita |
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Partono, Windu |
title |
Site coefficient and design spectral acceleration evaluation of new Indonesian 2019 website response spectra |
title_short |
Site coefficient and design spectral acceleration evaluation of new Indonesian 2019 website response spectra |
title_full |
Site coefficient and design spectral acceleration evaluation of new Indonesian 2019 website response spectra |
title_fullStr |
Site coefficient and design spectral acceleration evaluation of new Indonesian 2019 website response spectra |
title_full_unstemmed |
Site coefficient and design spectral acceleration evaluation of new Indonesian 2019 website response spectra |
title_sort |
site coefficient and design spectral acceleration evaluation of new indonesian 2019 website response spectra |
publisher |
Faculty of Engineering, Universitas Indonesia |
publishDate |
2022 |
url |
http://eprints.utm.my/id/eprint/101635/1/RamliNazir2022_SiteCoefficientandDesignSpectral.pdf http://eprints.utm.my/id/eprint/101635/ http://dx.doi.org/10.14716/ijtech.v13i1.4132 |
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