cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Muhammad Galib Ishak
Contact Email
galibishak@yahoo.co.id
Phone
+62811452537
Journal Mail Official
galibishak@yahoo.co.id
Editorial Address
Sekretariat Pascasarjana Universitas Tadulako, Jl. Sukarno-Hatta km 9 Tondo, Kecamatan Mantikulere Kota Palu, Sulawesi Tengah KP 94148
Location
Kota palu,
Sulawesi tengah
INDONESIA
Jurnal Sains dan Teknologi Tadulako
Published by Universitas Tadulako
ISSN : 20898630     EISSN : 29625696     DOI : https://doi.org/10.22487/jstt
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Materials Science & Nanotechnology
JSTT (Jurnal Sains dan Teknologi Tadulako) is a peer-reviewed journal that aims to publish and disseminate original research articles on the latest developments in all fields of engineering science and technology. The journal publishes original papers in Indonesian or in English, which contribute to understanding engineering science and improving engineering technology and science. The articles may be theoretical (including computational), experimental or both. The contribution should be unpublished before and not under consideration for publication elsewhere.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 64 Documents
 3   4   5   6   7 
HYBRID ANALYSIS OF LIQUEFACTION POTENTIAL AND SITE ATTENUATION EFFECTS USING EMPIRICAL AND NONLINEAR NUMERICAL APPROACHES: A CASE STUDY OF RSU ANUTAPURA DURING THE 2018 PALU EARTHQUAKE Zain, Arzal M.; Adam, Andi Arham; Dolu, Anwar M.
Jurnal Sains dan Teknologi Tadulako Vol 12 No 1 (2026): April 2026
Publisher : Postgraduate Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/jstt.v12i1.1037

Abstract

The Palu earthquake of September 28, 2018 (Mw 7.5) triggered massive liquefaction that had a destructive impact on critical infrastructure, including the Anutapura General Hospital (RSU) Building. Conventional liquefaction potential evaluations generally rely on empirical procedures based on the Standard Penetration Test (SPT), which are effective in detecting early vulnerability (triggering). However, this method has a fundamental limitation because it is unable to generate dynamic surface acceleration time-histories for structural design. This research proposes an in-depth case study using a hybrid approach that combines empirical methods (Simplified Procedure) with 1D Non-Linear Site Response Analysis (NL-SRA). Computational modeling is developed in the OpenSees framework using the PressureDependMultiYield02 (PDMY02) constitutive model to simulate cyclic mobility and effective stress dissipation due to pore water pressure generation under undrained conditions. The analysis results on the soil profile of Anutapura General Hospital confirmed the occurrence of extreme liquefaction in shallow to medium sand layers (depth 5–31 m), which is characterized by a drastic decrease in the empirical Safety Factor (FS) to 0.49. Numerically, the NL-SRA model validates that the loss of shear stiffness in the liquefied layer triggers an attenuation (de-amplification) phenomenon of peak seismic acceleration at the surface, which is accompanied by an elongation of the dominant wave period. This study concludes that the integration of empirical methods and advanced non-linear constitutive models is absolutely necessary to capture the wave modification effects due to soil liquefaction, while producing realistic seismic demand as a precise basis for Soil-Structure Interaction (SSI) analysis.
A Study of Curve Number (CN) Values in Flood-Prone Watersheds in the Flores River Basin.: Kajian Nilai Curve Number (CN) Pada Daerah Aliran Sungai (DAS) Yang Rentan Banjir Di Wilayah Sungai Flores Krisnayanti, Denik Sri
Jurnal Sains dan Teknologi Tadulako Vol 12 No 1 (2026): April 2026
Publisher : Postgraduate Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/jstt.v12i1.1046

Abstract

Floods are natural disasters that frequently occur as a result of global climate change, land-use conversion, and human activities that damage the environment. Based on data from the 2017 Water Resources Management Pattern (PSDA) of the Flores River Basin, there are 23 flood-prone areas across 12 watersheds in the region. This study focuses on the Magepanda and Kolisia watersheds in Sikka Regency, East Nusa Tenggara, with respective areas of 61.439 km² and 32.740 km². The purpose of this research is to determine the flood discharge in both watersheds using 22 years (2003–2024) of GPM satellite rainfall data. Rainfall distribution analysis was conducted using the Normal, Log Normal, Log Pearson Type III, and Gumbel methods, while flood discharge calculations were performed using the Synthetic Unit Hydrograph (HSS) SCS-CN method through the HEC-HMS application. The results show that the peak flood discharge in the Magepanda watershed ranges from 105,8 m³/s for a 2-year return period to 793,9 m³/s for a 1000-year return period. Meanwhile, the Kolisia watershed has peak flood discharge values ranging from 68,9 m³/s for a 2-year return period to 452,6 m³/s for a 1000-year return period.
THE EFFECT OF FIBER VOLUME FRACTION IN OIL PALM EMPTY FRUIT BUNCH COMPOSITES ON TENSILE AND IMPACT PROPERTIES Sirajuddin, Awal Syahrani
Jurnal Sains dan Teknologi Tadulako Vol 12 No 1 (2026): April 2026
Publisher : Postgraduate Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/jstt.v12i1.1050

Abstract

This study aims to analyse the effect of the fiber weight fraction of oil palm empty bunch fiber (OPEBF) composite with HDPE matix on tensile strength and impact. The composite fabrication process is performed using the hot compression method for 210oC with a weight fraction of 40, 50, and 60% fiber. The results showed that the highest tensile strength of the composite fraction of 40% fiber was 3.461 MPa and its modulus of elasticity was 97.702 MPa, followed by the fraction of 50% fiber with a value of 2.948 MPa, the modulus of elasticity was 88.544 MPa, and the lowest value was in the fraction of 60% fiber with a value of 2.205 MPa, and the modulus of elasticity was 87.622 MPa. Furthermore, the highest effort in the impact test on the weight fraction of 40% fiber is 4,249 Joules and an impact energy value of 8364,744 Joules/mm2, followed by a weight fraction of 50% fiber with an effort value to break the specimen of 3,935 Joules and an impact energy value of 7745,651 Joules/mm2, and the lowest attempt to break the specimen at the weight fraction of 60% fiber has a value of 3,341 Joules and has an impact energy of 6576,934 Joules/mm2.
TWO-DIMENSIONAL WATER SURFACE PROFILE ANALYSIS AT THE BEND OF PALU RIVER SEGMENT SP 304–SP 318 USING SMS AQUAVEO (RMA2 MODULE) Nur, Nur Hidayat; Bariroh, Nina; Rahmi, Sitti; Tunas, I Gede; Andiese, Vera W; Warliawati, Sri
Jurnal Sains dan Teknologi Tadulako Vol 12 No 1 (2026): April 2026
Publisher : Postgraduate Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/jstt.v12i1.1051

Abstract

River bends are hydraulically complex zones characterised by centrifugal-force-driven secondary currents that produce differential water surface elevations, asymmetric velocity distributions, and lateral sediment transport. This study presents a two-dimensional (2D) hydrodynamic analysis of the water surface profile along a meandering reach of the Palu River (SP 304–SP 318), located in Tulo Village, Dolo District, Sigi Regency, Central Sulawesi, Indonesia. The RMA2 finite-element module within the Surface Modelling System (SMS) Aquaveo was employed. A 50-year return-period flood discharge (Q₅₀ = 387.85 m³/s) was estimated using the Snyder Synthetic Unit Hydrograph method, based on 15 years (2007–2021) of daily rainfall data from three meteorological stations. The Log Pearson Type III distribution was selected through Chi-square goodness-of-fit tests. A triangular 2D mesh at 5 m spacing was constructed in UTM Zone 49 WGS84 coordinates, and model calibration yielded a Manning roughness coefficient n = 0.01, matching the field-measured mid-channel velocity of 0.20 m/s. Under Q₅₀ conditions, the simulated maximum flow velocity is 2.88 m/s (SP 313–SP 314, pre-bend segment), maximum water depth is 3.408 m (outer bank), and the highest water surface elevation is 26.831 m above sea level (upstream boundary). The outer bank consistently exhibits higher velocities and water surface elevations than the inner bank, confirming superelevation and active scour at the concave bank. These findings provide critical hydrodynamic data for river bank protection and flood management planning along the Palu River corridor.

Page 7 of 7 | Total Record : 64

 3   4   5   6   7 

Filter by Year

2020 2026


Reset
Filter By Issues
All Issue Vol 12 No 1 (2026): April 2026 Vol 11 No 2 (2025): Agustus 2025 Vol 11 No 1 (2025): April 2025 Vol 10 No 2 (2024): Agustus 2024 Vol 10 No 1 (2024): April 2024 Vol 9 No 2 (2023): Agustus 2023 Vol 9 No 1 (2023): April 2023 Vol 8 No 2 (2022): Agustus 2022 Vol 8 No 1 (2022): April 2022 Vol 7 No 2 (2021): Agustus 2021 Vol 7 No 1 (2021): April 2021 Vol 6 No 2 (2020): Agustus 2020 Vol 6 No 1 (2020): APRIL 2020 More Issue