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 Consid...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universitas Indonesia
2022-01-01
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| Series: | International Journal of Technology |
| Subjects: | |
| Online Access: | https://ijtech.eng.ui.ac.id/article/view/4132 |
| _version_ | 1797972816966975488 |
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| author | Windu Partono Masyhur Irsyam Ramli Nazir Muhammad Asrurifak Undayani Cita Sari |
| author_facet | Windu Partono Masyhur Irsyam Ramli Nazir Muhammad Asrurifak Undayani Cita Sari |
| author_sort | Windu Partono |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-11T03:54:26Z |
| format | Article |
| id | doaj.art-aab24dc94fd24cf5ae41e0be6f423230 |
| institution | Directory Open Access Journal |
| issn | 2086-9614 2087-2100 |
| language | English |
| last_indexed | 2024-04-11T03:54:26Z |
| publishDate | 2022-01-01 |
| publisher | Universitas Indonesia |
| record_format | Article |
| series | International Journal of Technology |
| spelling | doaj.art-aab24dc94fd24cf5ae41e0be6f4232302023-01-02T01:04:49ZengUniversitas IndonesiaInternational Journal of Technology2086-96142087-21002022-01-0113111512410.14716/ijtech.v13i1.41324132Site Coefficient and Design Spectral Acceleration Evaluation of New Indonesian 2019 Website Response SpectraWindu Partono0Masyhur Irsyam1Ramli Nazir2Muhammad Asrurifak3Undayani Cita Sari4Civil Engineering Department, Engineering Faculty, Diponegoro University, Semarang 50275, IndonesiaCivil Engineering Department, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Bandung 40132, IndonesiaCentre for Tropical Geoengineering, School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81300 Skudai, Johor, MalaysiaFaculty of Civil Engineering and Planning, Institut Sains dan Teknologi Nasional, Jakarta 12630, IndonesiaCivil Engineering Department, Engineering Faculty, Diponegoro University, Semarang 50275, IndonesiaCalculation 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.https://ijtech.eng.ui.ac.id/article/view/4132design response spectral accelerationmcern-sptsite coefficientstraight-line interpolation |
| spellingShingle | Windu Partono Masyhur Irsyam Ramli Nazir Muhammad Asrurifak Undayani Cita Sari Site Coefficient and Design Spectral Acceleration Evaluation of New Indonesian 2019 Website Response Spectra International Journal of Technology design response spectral acceleration mcer n-spt site coefficient straight-line interpolation |
| title | 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_short | 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 |
| topic | design response spectral acceleration mcer n-spt site coefficient straight-line interpolation |
| url | https://ijtech.eng.ui.ac.id/article/view/4132 |
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