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All Journal Program Kreativitas Mahasiswa - Pengabdian Kepada Masyarakat The Spirit of Society Journal : International Journal of Society Development and Engagement Devotion: Journal of Research and Community Service Journal of Social Research COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat International Journal of Hydrological and Environmental for Sustainability TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES (TIRES) International Journal on Advanced Technology, Engineering, and Information System (IJATEIS) Menara Pengabdian Acitya Wisesa: Journal of Multidisciplinary Research INJURITY: Journal of Interdisciplinary Studies Jurnal Teknik Indonesia Enrichment: Journal of Multidisciplinary Research and Development Jurnal Media Ilmu JAT (Journal of Accounting and Tax) International Journal of Social Science and Community Service
Esti Wulandari
Pendidikan PKn, FPIPS, IKIP PGRI Madiun
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Physics Public Health Social Sciences Transportation Other

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Integrated Flood Risk and Embankment Stability Modeling in the Comoro River, Timor-Leste using HEC-RAS and GIS Minaryo, Kris; Tjendani, Hanie Teki; Wulandari, Esti; Junaidi, Rahmad; Andiyan, Andiyan; Omanwar, Shreeniwas
International Journal of Hydrological and Environmental for Sustainability Vol. 4 No. 3 (2025): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v4i3.961

Abstract

Dili, the capital city of Timor-Leste, is increasingly vulnerable to flooding due to its geomorphological characteristics and rapid urban expansion. The Comoro River, the largest of several rivers traversing the city, has experienced multiple significant flood events in recent years most notably in March 2020, April 2021, and February 2022 resulting in severe damage to infrastructure and disruption to local communities. Urban development has led to watershed degradation, sediment accumulation, reduced channel capacity, and embankment overtopping, exacerbating flood risks in densely populated areas. This study aims to assess flood risk and evaluate embankment resilience using an integrated modeling approach. Design flood discharge was estimated using the Log Pearson Type III distribution and the Nakayasu synthetic unit hydrograph, with validation through Chi-Square and Kolmogorov-Smirnov goodness-of-fit tests. Hydraulic simulations were conducted using HEC-RAS 6.1.0 programme, while flood inundation mapping was performed with ArcGIS 10.3 to identify critical flood-prone zones and guide mitigation strategies. Results indicate a peak discharge of 192.141 m³/s for a 25-year return period flood. Mitigation measures proposed include embankment construction and river normalization at vulnerable cross-sections. HEC-RAS simulations demonstrate that these interventions significantly reduce flood inundation. The embankment slope stability factor was calculated at 7.55, indicating a high level of structural safety. The estimated cost for implementing these flood control measures is USD 571,366.87. This study provides a replicable framework for flood hazard modeling and infrastructure planning in urban river systems, contributing to climate-resilient development and evidence-based decision-making in Southeast Asian contexts.
Time and Cost Analysis Using the Critical Chain Project Management Method in the Retrofitting Work of the East Java Province Human Rights Office Building into a Green Building Aji Sasongko, Christio; Teki Tjendani, Hanie; Wulandari, Esti
Enrichment: Journal of Multidisciplinary Research and Development Vol. 3 No. 9 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v3i9.568

Abstract

The retrofitting work of the East Java Province Public Works Office Building into a Green Building encountered several obstacles during the construction process that caused delays in the execution of the work. Therefore, scheduling control is needed using the Critical Chain Project Management method. CCPM aims to manage scheduling design and process control by concentrating on eliminating multitasking, Parkinson's Law, and student's syndrome, which have been considered to cause suboptimal field work execution time and increased waste in terms of time. CCPM also has a buffer mechanism used in scheduling as a tool to protect project schedules from uncertainty, ensuring that every task can be completed on time. By using the Critical Chain Project Management method, a project buffer value of 26 days and a feeding buffer of 11 days were obtained, so that the original work duration of 180 days would become 143 days if the entire buffer of 37 days was not applied. The implementation cost with a value of Rp. 32,048,830,700 can be more efficient at Rp. 30,584,593,995 if the entire buffer is not used, with a project buffer saving of Rp. 1,028,923,090 and feeding buffer savings of Rp. 435,313,615, resulting in a total work cost savings of Rp. 1,464,236,705.
NUMERICAL ANALYSIS OF PORE WATER PRESSURE, SEEPAGE, AND SLOPE STABILITY DURING MENINTING DAM PRE-IMPOUNDING Mahendro, Jiden Desta; Patriadi, Andi; Wulandari, Esti
Acitya Wisesa: Journal of Multidisciplinary Research [IN PRESS] Vol. 5 Issue 1 (2026)
Publisher : jfpublisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56943/jmr.v5i1.920

Abstract

Meninting Dam in West Lombok represents strategic hydraulic infrastructure requiring comprehensive evaluation of pore water pressure, seepage behavior, and slope stability during the initial impoundment phase. This study evaluates the dam's hydraulic and geotechnical response through numerical simulation using SEEP/W and SLOPE/W software, validated against field instrumentation data. Numerical modeling demonstrates that reservoir elevation increase from 168.50 m to 196.06 m induces elevated pore water pressure within the core zone, with a maximum value of 505.55 kPa recorded at monitoring instrument Pe.3. Concurrently, seepage discharge escalates from a range of 0.00378 to 0.0133 m³/s during initial filling to 0.0637 m³/s at near-normal water level. These hydraulic responses remain within acceptable operational parameters for earthfill dam structures. Slope stability analysis yields safety factors ranging from 2.052 to 2.860, substantially exceeding the minimum regulatory threshold of FS ≥ 1.5 and confirming structural stability under normal operational conditions. The findings recommend enhancement of the instrumentation monitoring protocol and establishment of an early warning system to improve detection capabilities for pore water pressure fluctuations, seepage anomalies, and potential slope instability mechanisms.
ANALYSIS OF WATER DEMAND AND AVAILABILITY IN THE PRUMPUNG WATERSHED, TUBAN Zakariya, Rony; Patriadi, Andi; Wulandari, Esti
Acitya Wisesa: Journal of Multidisciplinary Research [IN PRESS] Vol. 5 Issue 1 (2026)
Publisher : jfpublisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56943/jmr.v5i1.927

Abstract

Water constitutes a vital natural resource supporting human life, agricultural activities, and regional development. Limited water availability coupled with continuously increasing water demand due to population growth and agricultural activities necessitates data-based water resource planning and management. This research aimed to analyze water demand and water availability in the Prumpung Watershed, Tuban Regency, for the 2025-2029 projection period. The research employed a descriptive quantitative approach utilizing population, land use, and rainfall data. Domestic water demand was calculated based on per capita consumption standards and population projections, while non-domestic water demand was calculated from rice field irrigation requirements based on land area and cropping intensity. Water availability was calculated based on surface runoff volume obtained from annual rainfall, runoff coefficient, and watershed area. The analysis results indicate that domestic water demand increases from 2,389,812 m³ in 2025 to 2,491,776 m³ in 2029. Non-domestic water demand increases from 91,034,789.98 m³ to 92,943,134.36 m³, bringing total water demand from 93,424,602.32 m³ to 95,434,910.78 m³. Meanwhile, average annual water availability amounts to 84,586,033.31 m³. The comparison between water demand and water availability demonstrates that water demand exceeds water availability throughout all projection years. Therefore, efforts to improve water use efficiency, particularly in the irrigation sector, and catchment area conservation are required to maintain water resource sustainability in the Prumpung Watershed.
Analisis Banjir Rancangan Metode HSS Laksono-Erub Nugroho, Laksono Djoko; Wulandari, Esti; Rumihin, Ony Frengky; Subroto, Tisno
COMSERVA : Jurnal Penelitian dan Pengabdian Masyarakat Vol. 5 No. 9 (2026): COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/comserva.v5i9.3512

Abstract

Prediksi banjir rancangan yang akurat merupakan kebutuhan mendasar dalam perencanaan infrastruktur pengendalian banjir dan manajemen sumber daya air. Penelitian ini bertujuan untuk membandingkan akurasi empat metode Hidrograf Satuan Sintetik (HSS) dalam memprediksi debit banjir rancangan di DAS Plumbon, Kabupaten Semarang, yakni metode HSS Nakayasu, Snyder, Gama I, dan Laksono-Erub, serta mengidentifikasi metode yang memberikan penyimpangan terkecil terhadap data debit observasi. Penelitian ini menggunakan pendekatan kuantitatif komparatif dengan data curah hujan harian maksimum tahunan periode 2010-2020 dari tiga stasiun hujan di sekitar DAS Plumbon (Stasiun Mangkang, Kaligawe, dan Gunungpati), serta data debit observasi dari Bendung Plumbon periode yang sama. Hasil penelitian menunjukkan bahwa metode HSS Laksono-Erub memberikan akurasi tertinggi dengan nilai RMSE = 8,45 m³/detik, MAPE = 12,3%, dan R² = 0,89, diikuti oleh metode Gama I (RMSE = 11,72 m³/detik, MAPE = 16,8%, R² = 0,82), Nakayasu (RMSE = 15,31 m³/detik, MAPE = 21,5%, R² = 0,74), dan Snyder (RMSE = 18,96 m³/detik, MAPE = 25,7%, R² = 0,68). Metode Laksono-Erub secara konsisten menunjukkan penyimpangan terkecil untuk semua kala ulang, dengan selisih rata-rata 10-15% terhadap debit observasi. Temuan ini mengonfirmasi bahwa metode Laksono-Erub, yang dikalibrasi berdasarkan karakteristik DAS di Jawa Utara dan Madura, memiliki aplikabilitas yang baik untuk DAS Plumbon yang memiliki karakteristik fisiografis serupa. Penelitian ini memberikan rekomendasi praktis bagi perencana dalam memilih metode HSS yang tepat untuk analisis banjir rancangan di wilayah dengan karakteristik DAS serupa, serta memperkuat basis validasi empiris metode Laksono-Erub di luar lokasi pengembangan aslinya.
Analysis of Clean Water Distribution Pipe Implementation Time Using Value Engineering Method in Rungkut Industri Surabaya Rois, Ahmad; Wulandari, Esti; Purnama, Jaka
Jurnal Teknik Indonesia Vol. 5 No. 1 (2026): Jurnal Teknik Indonesia
Publisher : Publica Scientific Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58860/jti.v5i1.796

Abstract

Clean water distribution infrastructure projects in industrial areas face significant challenges related to cost efficiency and implementation time, which directly impact project sustainability and operational effectiveness. This study analyzes the cost and time efficiency of the clean water distribution system in the Rungkut industrial area, Surabaya, by applying the Value Engineering (VE) method. The main objective of this study is to evaluate and compare the performance of three commonly used types of pipes—namely HDPE (High-Density Polyethylene), uPVC (unplasticized polyvinyl chloride), and GI (galvanized iron)—to determine the most optimal alternative without reducing the function or quality of the clean water distribution system. Data collection was conducted through a combination of methods: distributing questionnaires to professional respondents in civil engineering and water installation fields, conducting direct interviews with project-related parties, and analyzing technical documents and costs from actual projects. The obtained data were analyzed using the Relative Importance Index (RII) method to assess key aspects such as cost efficiency, ease of installation, and material durability. The results showed that HDPE pipes offer superior cost and time efficiency compared to the others. The cost difference between HDPE and uPVC pipes is Rp1,407,577, while that with GI pipes is Rp731,885. In terms of time, HDPE pipes can reduce implementation duration by up to 39 days compared to uPVC pipes and by 9 days compared to GI pipes.
Construction Cost Analysis of Spun Pile and Bored Pile Foundations for Aqueduct C of the Raw Water Supply Supplemental Project in Aceh Province Aziz, Ghufran Helmi; Patriadi, Andi; Wulandari, Esti
Jurnal Teknik Indonesia Vol. 5 No. 1 (2026): Jurnal Teknik Indonesia
Publisher : Publica Scientific Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58860/jti.v5i1.814

Abstract

Selecting the optimal deep foundation system is a critical task in major infrastructure projects, requiring a balance between structural performance, geotechnical constraints, and economic viability, as foundation costs typically represent a significant portion of the total budget. Bored piles and spun piles are two widely adopted deep foundation types, each offering distinct advantages in terms of capacity, installation speed, and environmental impact. Given the necessity for cost optimization in the Raw Water Supply Supplemental Project in Aceh Province, this study focuses on comparing the construction costs of these two foundation types for Aqueduct C. The foundation plan for Aqueduct C requires a total pile length of 2,870 meters with a diameter of 60 cm. The analysis uses unit cost data based on the Ministerial Regulation's Unit Price Analysis (AHSP) tables. The calculation results show that the total cost for the bored pile foundation is Rp2,847,074,353.90, while the total cost for the spun pile foundation is Rp3,205,844,730.90. This indicates that the bored pile foundation is more cost-effective for this specific project by approximately Rp358,770,377.00. The structural capacity analysis confirmed that the designed foundation group safely supports the axial load transferred by the piers.
Performance Analysis on Road Implementation Project Based on Time and Cost Alves, Agata Maria Orleans; Tjendani, Hanie Teki; Wulandari, Esti
International Journal of Social Science and Community Service Vol. 2 No. 1 (2024): JANUARY
Publisher : CV. Proaksara Global Transeduka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70865/ijsscs.v2i1.10

Abstract

Effective time management is essential for ensuring project implementation aligns with the planned schedule, and one way to achieve this is through the use of Earned Value Analysis (EVA). EVA is employed to estimate the extent to which a project is progressing according to its work plan. This research aims to analyze the timeline of a road construction project using the Earned Value Analysis Method to estimate the final project completion time on a monthly basis. The methodology employed in this study involves the application of the Earned Value Method over a project duration of 18 months. The importance of the Earned Value Analysis Method lies in its ability to assist both the project owner and implementer in more easily analyzing the project's performance, thereby providing significant benefits for both parties. The study found that the project completion time did not align with the initial project schedule. Specifically, the calculation of the cumulative project completion time was 9 months, whereas the planned duration was 18 months. This indicates a delay of 7 months beyond the planned schedule.
Acceleration Cost Analysis with Critical Path Method: (Case Study on Jakarta Sewerage Development Project Zone 1, Package 2: Construction of Wastewater Sewers in Area 1-1) Hartawan, Ade Sholeh; Witjaksana, Budi; Wulandari, Esti
International Journal of Social Science and Community Service Vol. 2 No. 4 (2024): OCTOBER
Publisher : CV. Proaksara Global Transeduka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70865/ijsscs.v2i4.11

Abstract

In a construction project, preparation work typically includes tasks related to setting up work facilities, conducting field investigations, obtaining permits, and non-structural activities. The Jakarta Sewerage Development Project Zone 1, Package 2, which involves the construction of sewers in Area 1-1, is currently in the preparation phase and is experiencing challenges due to a complex permit process. This has led to minimal progress as the initial project planning did not consider the time needed to secure the necessary permits for implementation. The author is therefore evaluating the project timeline to gauge performance during the preparation phase before actual construction begins. This study utilizes the Critical Path Method (CPM) scheduling technique in Microsoft Project to pinpoint critical activities. Upon analysis, it was found that the budget plan for Package 2 of the Jakarta Sewerage Development Project (Zone 1) was detailed and included various work descriptions, with a total budget of IDR 862,292,086,196. However, delays have occurred, resulting in a 17-day setback in the project schedule, necessitating work acceleration. To bring the project duration back in line with the original schedule as per the contract, acceleration was required. This was carried out on the Shaft Construction C-8.1, which was initially set to take 80 days but was shortened to 63 days through time acceleration, incurring a cost of IDR 23,279,288.
Analysis of Investment Sensitivity in The Construction of The Gelora Bung Tomo Surabaya Circuit Sulistianto, Leo Agus; Witjaksana, Budi; Wulandari, Esti
International Journal of Social Science and Community Service Vol. 2 No. 4 (2024): OCTOBER
Publisher : CV. Proaksara Global Transeduka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70865/ijsscs.v2i4.12

Abstract

Provision of Sports Prasarana is an attempt to fulfill the basic rights of the public to obtain services in sports activities, as listed in Law of the Republic of Indonesia Number 11 of 2022 concerning Sports 2022. The growing automotive industry is one important sector that significantly contributes to Indonesian economic growth. Based on the Surabaya City for 2021-2026 calls for the creation of an integrated area, with the Gelora Bung Tomo area serving as an international sports center and integrating with the growth of trade and service functions in Surabaya's surrounding areas. The aim of this study is to measure the amount of investment income and revenue limits in an effort to reduce the risks associated with the investment in the circuit. We carry out flow calculations using the Net Present Value (NPV), Internal Rate of Return (IRR), Benefit Cost Ratio (BCR), and Payback Period (PP) methods, and then analyze the sensitivity. We reviewed the sensitivity analysis based on several parameters, including commercial rent income and circuit management costs. The development of Tomo's Gelora Circuit is sensitive to a loss of income from the rental of business or commercial premises of 8%, which will affect a decline in profit, resulting in a negative net present value (NPV) and prolonging the rate of return. Additionally, it is sensitive to an increase in management costs by 12%.
Co-Authors Adiputra, Reza Agus Firmanda, Yocky Ahmad Rois AJI SASONGKO, CHRISTIO Alves, Agata Maria Orleans Andiyan Ardianto, Lukman Ariyanti, Menik Atwin Suyitno, Dwi Aziz, Ghufran Helmi Brian V P, Andreas Budi Witjaksana, Budi Candra M, Alang Danang Dwi Nugroho Djoko Nugroho, Laksono Dozier, Alpha Ekawati, Ridania Fakhrurrozi, Muhamad Fathurokman, Hasan Alif Gatot Dwi Wahyono Gode, Dicky godinho, domingos Gomes, Orlando Guesa Maiwinda Hadi, Suprapto Hanie Teki Tjendani, Hanie Teki Hartawan, Ade Sholeh Hudyantoro, Hudyantoro Jaka Purnama Jamiludin, Jamiludin Jarwoto, Jarwoto John, Jenodius Aldino Laksono Djoko Laksono Djoko Nugroho Lina Yuliani Luis, Laurenco Mahendro, Jiden Desta Maya Yusnita Minaryo, Kris Muchamad Lutfi, Muchamad Muhammad Efendi, Muhammad Nailufar, Linda Naldi, Jepri Nopriyanto, Dwi Erry Nugroho, Laksono D. Nurrahmat, Ean Fadhillah Oetomo, Wateno Omanwar, Shreeniwas Patriadi, Andi Prasetiyo W., Arif Pratiwi, Sekar Harum Purbo, Atma Djendra Putri, Mia Dewindi Rahmad Junaidi, Rahmad Rumihin, Ony Frengky Sajiyo Sajiyo, Sajiyo Septiana, Vini Wela Septoraharjo, Eko Rony Septria, Metriani Setiyo, Anugrah Dwi Setyarini, Ika Oktavia Slamet Riyadi Subroto, Tisno Sulistianto, Leo Agus Suprapto, Aki’ Supriyanto, Yunaidi Susanti, Dini Teki Tjendani, Hanie Umarwoko Daniarto, Cornelius Ummatus Sholikhah, Ummatus Venusia A, M. Fajar Widhajati, Eni Windarti Agustina Zainal Muttaqin, Muhammad Zakariya, Rony