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All Journal Edutik : Jurnal Pendidikan Teknologi Informasi dan Komunikasi Journal of Social Research
Wallah, Steenie Edward
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Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Social Sciences Other

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Retrospective Risk Assessment of Wakal-Taeno Road Functionality Failure Based on SNI IEC/ISO 31010:2016 Mumu, Maycel George; Sumayouw, Marthin Dody J; Wallah, Steenie Edward
Journal of Social Research Vol. 4 No. 8 (2025): Journal of Social Research
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/josr.v4i7.2684

Abstract

The Wakal-Taeno road on Ambon Island is a crucial link between Ambon City and the Leihitu sub-district. Although completed in 2023 using Presidential Instruction funds and officially operational in 2024, the road has already experienced multiple functional failures. This study retrospectively analyzes contributing factors and reassesses risks using the SNI ISO/IEC 31010:2016 standard. Primary data were collected through visual field inspections, supported by secondary data from news reports and academic sources. Root Cause Analysis (RCA) was employed to identify core problems, while the ISO framework guided risk identification, probability-impact analysis, and risk evaluation. Key issues identified include the collapse of a temporary Bailey bridge in June 2025, landslides on slopes, and settlement of bridge approaches. RCA revealed root causes such as insufficient geotechnical and hydrological investigations, unsuitable design and materials selection, incomplete risk assessments, and reactive, rather than proactive, maintenance strategies. The risk reassessment categorized bridge collapse, slope failures, and approach instability as high and unacceptable risks (risk scores: 16–20), while drainage system deficiencies were moderate (score: 12), and early pavement degradation was low (score: 9). Recommendations include constructing permanent bridges designed according to local geotechnical conditions, slope stabilization and reinforcement, integrated drainage systems, and proactive maintenance programs. Applying the SNI ISO/IEC 31010:2016 framework from the planning stage, alongside enhanced inter-agency coordination, is essential for sustainable infrastructure development in hazard-prone regions. Validation was ensured through data triangulation, member checking, and methodological transparency to strengthen the study’s credibility.
Perencanaan Sistem Penyediaan Air Bersih di Desa Leilem Dua Kecamatan Sonder Kabupaten Minahasa Ratu, Yosua Aditya; Mananoma, Tiny; Wallah, Steenie Edward
Edutik : Jurnal Pendidikan Teknologi Informasi dan Komunikasi Vol. 5 No. 2 (2025): EduTIK : April 2025
Publisher : Jurusan PTIK Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/edutik.v5i2.11434

Abstract

ABSTRAK Air adalah elemen vital yang menjadi sumber kehidupan utama. Dari hasil proyeksi yang didapat jumlah jiwa desa Leilem Dua selama 15 tahun berjumlah 441 jiwa. Dari hasil analisis yang dilakukan untuk kebutuhan air di desa Leilem Dua, kebutuhan domestik bertotal 0.205 l/det dan total kebutuhan air non domestik 0.031 l/det sehingga untuk total kebutuhan di desa Leilem Dua berdasarkan perencanaan berjumlah 0.235 l/det. Analisis menggunakan perangkat lunak EPANET dibagi dalam dua bagian yaitu jaringan transmisi dan juga jaringan distribusi. Dari hasil analisis yang dilakukan menggunakan perangkat lunak EPANET, untuk jaringan transmisi, kecepatan pada pipa bernilai 0,36 m/det dan tekanan pada ujung pipa bernilai 25,37 m dan menggunakan pipa HDPE 2 inch. Dari hasil analisis untuk pipa distribusi didapat tekanan pada ujung pipa node 10 = 14,62 m, node 9 = 20,64, node 8 = 17,49 dan node 13 = 27,75 dengan panjang pipa yang didapat, pipa 3 inch sepanjang 150 m, pipa 2 inch sepanajang 850 m, pipa 1,5 inch sepanjang 220 m dan pipa 1 inch sepanajang 250 m. Untuk kecepatan yang ada pada pipa memenuhi kriteria peraturan mentri pekerjaan umum nomor: 18/PRT/M/2007. ABSTRACT Water is a vital element and the primary source of life. Based on the projections, the population of Leilem Dua village over the next 15 years is estimated to be 441 individuals. From the analysis conducted regarding water needs in Leilem Dua, the total domestic water demand amounts to 0.205 Liters per second, while the non-domestic water demand totals 0.031 Liters per second. Therefore, the overall planned water requirement for Leilem Dua village is 0.235 Liters per second. The analysis using EPANET software is divided into two parts: the transmission network and the distribution network. The results of the analysis for the transmission network indicate that the velocity in the pipe is 0.36 meters per second, and the pressure at the end of the pipe is 25.37 meters, using a 2-inch HDPE pipe. For the distribution network, the pressure at the end of the pipes is as follows: node 10 = 14.62 meters, node 9 = 20.64 meters, node 8 = 17.49 meters, and node 13 = 27.75 meters. The pipe lengths used are: 150 meters of 3-inch pipe, 850 meters of 2-inch pipe, 220 meters of 1.5-inch pipe, and 250 meters of 1-inch pipe. The velocity in the pipes meets the criteria set by the Minister of Public Works Regulation No. 18/PRT/M/2007.
Co-Authors Mumu, Maycel George Sumayouw, Marthin Dody J Tiny Mananoma Yosua Aditya Ratu