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Slamet Imam Wahyudi, Slamet Imam
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PENENTUAN TITIK ALTERNATIF PENGAMBILAN AIR DAN PERENCANAAN PIPA TRANMISI DARI SUNGAI RANDUGUNTING KE EMBUNG BANYUKUWUNG Luthfi B, Mohammad Kevin; Urfiansyah, Muhammad Thoriq; Wahyudi, Slamet Imam; Sentani, Ari
Jurnal Ilmiah Penelitian Mahasiswa Vol 2, No 2 (2023): September 2023
Publisher : Jurnal Ilmiah Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penentuan titik alternatif pengambilan air untuk menjadi hulu dari pipa transmisimerupakan pemilihan yang harus melibatkan elevasi ketinggian titik-titik air agardapat mengalir sencara gravitasi. Perencangan pipa transmisi digunakan untukmengaliri embung agar mengatasi masalah kekeringan di daerah rembang. Padabulan Agustus hingga November embung Banyukuwung kesulitan untukmendapatkan air sehingga perlunya surplesi air untuk mengisi embung tersebut.Pada tugas akhir ini akan memilih titik lokasi pengambilan air dan merencanakanpipa transmisi menggunakan EPANET. Dengan mengacu pada saluran pipa palingefektif dari segi jarak dan elevasi. Sangat dibutuhkan elevasi yang lebih tinggiuntuk hulu pipa agar pipa dapat mengalir tanpa menggunakan pompa. Analisis diEPANET menggunakan pipa HDPE sepanjang 16 KM dan berdiameter dalam352.6 mm. Debit yang di dapat 42 liter per detik dengan kecepatan air 43 cm/d.Kata Kunci: air, pipa transmisi
Evaluation of Passenger Terminal Service Facilities using SWOT Analysis at Tanjung Emas Class I Port, Semarang Rusmiyanto, Dedy; Wahyudi, Slamet Imam; Adi, Henny Pratiwi
ASTONJADRO Vol. 14 No. 2 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i2.17835

Abstract

This study aims to evaluate passenger terminal service facilities at Tanjung Emas Port, Semarang, using the SWOT Analysis method (Strengths, Weaknesses, Opportunities, Threats). This evaluation aims to identify the strengths, weaknesses, opportunities, and threats faced by passenger terminals in providing optimal service to users. The results of the analysis show that the main strength lies in adequate infrastructure and security systems, such as effective CCTV. However, weaknesses related to emergency response facilities and limitations in the dissemination of cargo policies need to be improved. Opportunities to improve service quality can be realized through the use of modern technology, while the biggest threats arise from increased passenger volumes and regulatory changes. Recommendations include improving emergency response facilities, utilizing CCTV for real-time monitoring, and providing better transportation facilities for passengers. The implementation of this strategy is expected to be able to improve the quality of passenger terminal services in the future.
Selection of Alternative Locations for Rubber Weirs to Fulfill Clean Water needs in Rembang Regency Adi, Henny Pratiwi; Wahyudi, Slamet Imam; Wahyudi, Rahmatia Sarah
ASTONJADRO Vol. 12 No. 3 (2023): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v12i3.8523

Abstract

Rembang Regency is one of the areas in Central Java that often faces the problem of lack of clean water, especially during the dry season. One of the innovations that can be applied to overcome the problems in Rembang Regency is to make a rubber weir. This study aims to consider and choose the location of the rubber weir which is planned to be built in the Kaliori District. There are 6 (six) criteria used in considering the selection of a rubber weir location and 3 (three) alternative location of weir. The data is then processed using the Analytical Hierarchy Process (AHP) method. The results showed that the most important criteria started from the ease of operational access (0.260), seawater intrusion (0.197), topographic considerations (0.161), social aspects (0.136), distance from water management installations (0.129), and the importance of fishing boats (0.117). As for Location 3, which is 300 m near the Dukuh Mbancang bridge, Tambakagung Village is the best alternative to be the location for the construction of a rubber weir. This is because the location has a straight river path and easy access and does not interfere with fishing activities.
OECD Water Governance Approach to Optimizing Drainage System in Semarang Kusumadewi, Adlina; Adi, Henny Pratiwi; Wahyudi, Slamet Imam
Journal of Advanced Multidisciplinary Research Vol 6, No 1 (2025): July 2025
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jamr.6.1.22-28

Abstract

Effective drainage systems are crucial for managing stormwater, preventing flooding, and promoting urban sustainability. However, rapid urbanization and climate change exacerbate drainage challenges in cities like Semarang, where poor infrastructure often struggles with heavy rainfall and tidal floods. Despite proactive efforts, such as participation in the Water as Leverage program, the city's drainage system faces significant challenges, including financial limitations and poor coordination between stakeholders. This study applies the Organization for Economic Co-operation and Development (OECD) Water Governance Principles to analyze the governance framework of Tenggang drainage system, identifying gaps and proposing improvements. A qualitative, descriptive approach was used, collecting primary data through interviews with government and community stakeholders, alongside secondary data from literature and document analysis. The results highlight the need for clearer roles and responsibilities, better coordination across government levels, and enhanced public participation. It was also found that integrating policies across sectors and fostering innovation could significantly improve the system's efficiency and sustainability. Additionally, strengthening transparency, trust, and community engagement is essential for achieving more inclusive governance. This study concludes that aligning Semarang’s drainage management with the OECD principles can lead to a more resilient, efficient, and sustainable system that addresses both current challenges and future water management needs.
ANALISIS KEHILANGAN AIR DAN EFISIENSI SALURAN (STUDI KASUS SALURAN SEKUNDER BANTUL DI PEKALONGAN) Ragil, Nafii; Wahyudi, Slamet Imam; Niam, M. Faiqun; Wahyudi, Rahma Sarah Wahyudi Sarah
Jurnal Teknik Sipil Giratory UPGRIS Vol 6, No 1: Juni 2025
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/giratory.v6i1.24091

Abstract

The Kaliwadas Irrigation Area is one of the irrigation networks under the authority of the Central Government (BBWS Pemali Juana) because it has an area of more than 3,000 Ha. Located in Pekalongan Regency, Central Java. Water intake from the Genteng River which connects the Kesesi Main Channel with the Bantul Secondary Channel. This study aims to analyze the Discharge Calibration, Water Loss, and Efficiency of the Bantul Secondary Channel from points B.Bt.1, B.Bt.2, and B.Bt.3. This research method, begins with the collection of secondary data obtained from the discharge data from BBWS Pemali Juana, previous measurements, primary data obtained from measurements using a current meter and the height of the threshold. Based on the study, it shows that the current meter and threshold have different discharge measurements. The primary data produced shows that the current meter produces the highest discharge of 2.19 m3 / s. The current meter has an average discharge of 0.89 m3 / s. Water loss is 25% with current meter and 31.6% with threshold, water loss in Bantul Secondary Channel is caused by leakage and physical condition of the channel. Larger flow distance, total channel efficiency decreases, reaching 86% to 76%, with efficiency threshold becomes 68%, percentage of this efficiency can be used for operation and maintenance basis.
ANALISIS HIDROLIKA PELIMPAH GOLENG DAN SWD 1 DALAM PENGENDALIAN DEBIT BANJIR SUNGAI WULAN Alamsyah, Nurul Ikhsan; Wahyudi, Slamet Imam; Niam, Moh Faiqun
Jurnal Kajian Ruang Vol 5, No 2 (2025): September
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jkr.v5i2.46077

Abstract

ABSTRACTFlood control in the coastal areas of Central Java, particularly along the SWD 1 Channel and the Goleng Spillway, faces significant hydraulic challenges due to sedimentation and land-use changes. This study aims to evaluate the hydraulic capacity of the Goleng Spillway and the SWD 1 Channel in reducing the Q25 flood discharge from the Wulan River, as well as to identify critical overflow points and effective mitigation scenarios. Hydraulic simulations were conducted using the HEC-RAS software under three scenarios: (1) inflow from the Goleng Spillway, (2) local flooding within the SWD 1 watershed, and (3) a combination of both. Input parameters included the Q25 design discharge, DEM-based topography, and cross-sectional channel geometry. The simulation results indicate that several cross-sections (from STA 0+025 to STA 31+000) are unable to accommodate the Q25 discharge effectively, with water surface elevations ranging from 1.18 to 7.9 meters. The most critical condition occurs along the left bank of SWD 1 due to the absence of embankment elevation. While the normalization design improved flow capacity, it was insufficient to manage the combined extreme inflows. Integrated structural interventions, such as elevating the left embankment and optimizing spillway geometry, are recommended to enhance flood resilience in the lower Wulan River region.Keywords: SWD 1, Goleng Spillway, flood, Q25, HEC-RAS, embankment, hydraulics. ABSTRAKPengendalian banjir di wilayah pesisir Jawa Tengah, khususnya di Sungai SWD 1 dan Pelimpah Goleng, menghadapi tantangan kapasitas hidrolika akibat sedimentasi dan perubahan tata guna lahan. Penelitian ini bertujuan untuk mengevaluasi kapasitas hidrolik Pelimpah Goleng dan Saluran SWD 1 dalam mereduksi debit banjir Q25 Sungai Wulan, serta mengidentifikasi titik-titik kritis luapan dan skenario mitigasi efektif. Simulasi hidrolika dilakukan menggunakan perangkat lunak HEC-RAS dengan tiga skenario: (1) inflow dari Pelimpah Goleng, (2) banjir lokal DAS SWD 1, dan (3) kombinasi keduanya. Parameter input meliputi debit desain Q25, topografi DEM, dan geometri penampang saluran. Hasil simulasi menunjukkan bahwa beberapa penampang (STA 0+025 hingga STA 31+000) tidak mampu menampung debit Q25 secara optimal, dengan muka air mencapai 1,18–7,9 m. Kondisi paling kritis terjadi pada sisi kiri SWD 1 akibat ketiadaan peninggian tanggul. Desain normalisasi terbukti meningkatkan kapasitas, tetapi tidak cukup mengatasi kombinasi inflow ekstrem. Intervensi struktural terintegrasi, seperti peninggian tanggul kiri dan optimalisasi geometri pelimpah, disarankan untuk memperkuat ketahanan banjir wilayah hilir Sungai Wulan.Kata Kunci: SWD 1, Pelimpah Goleng, banjir, Q25, HEC-RAS, tanggul, hidrolika.
Penilaian Tata Kelola Sistem Drainase Berbasis Prinsip-Prinsip OECD Water Governance Kusumadewi, Adlina; Adi, Henny Pratiwi; Wahyudi, Slamet Imam
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 31, Nomor 1, JULI 2025
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v31i1.68655

Abstract

Urban drainage systems play a critical role in managing excess water to prevent flooding, yet challenges such as rapid urbanization, land-use changes, and climate change exacerbate these issues. In Semarang, factors like clogged channels, sedimentation, land subsidence, and tidal flooding further complicate drainage management. The Organisation for Economic Co‑Operation and Development (OECD) Water Governance approach, with its emphasis on effectiveness, efficiency, and stakeholder engagement, provides a promising framework for improving water governance. However, its application in Indonesia, particularly in Semarang, remains underexplored. This study evaluates the implementation of OECD Water Governance principles in managing the Tenggang River drainage system to promote sustainable water governance. Using the OECD Water Governance Indicator Framework, the research assesses the application of 12 principles through a combination of literature review, questionnaires, and interviews with government officials and community representatives. A descriptive analysis supported by interview findings reveals that the principles are moderately well implemented, though discrepancies exist between government and community evaluations. Government respondents provided higher scores for the dimensions of effectiveness (4.70), efficiency (4.73), and trust & engagement (4.88), compared to the community’s scores of 4.30, 4.07, and 4.40, respectively. Nonetheless, both groups rated the trust & engagement dimension the highest among all.
Optimization Strategy for Winning Construction Management Consultant Services Tenders in Indonesia: Delphi and SWOT Studies Gantika, Eko; Wahyudi, Slamet Imam; Wibowo, Kartono
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.17925

Abstract

This study aims to formulate an optimization strategy for winning tenders for construction management consulting services in Indonesia based on the results of Delphi and SWOT analyses. The Delphi method is used to obtain consensus from experts on factors that influence tender winning, while the SWOT analysis helps group these factors into categories of strengths, weaknesses, opportunities, and threats. The results show that the company's main strengths are project experience, quality of human resources, and financial stability. The main weaknesses include inefficient administrative management and incomplete documents. The greatest opportunities arise from national infrastructure projects and partnerships with foreign companies, while the greatest threats are increasingly fierce competition and complex changes in tender regulations. Based on these results, the recommended optimization strategy involves improving project management, utilizing technology, and strengthening relationships with project owners. This study provides strategic guidance that can help consulting firms improve their competitiveness in the tender process.
Initial Analysis of Floating Fiber Embankment Construction: Working Principle, Material Characteristics, and Potential Applications in Coastal Areas Sunaryo, Sunaryo; Wahyudi, Slamet Imam; Ni'am, Moh. Faiqun
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.17976

Abstract

Sea level rise due to climate change and land subsidence in coastal areas have increased the frequency of tidal flooding, especially in Indonesia. Conventional embankments that are generally used to hold back seawater have limitations in adapting to fluctuations in water levels. This study evaluates a floating fiber embankment as an innovative solution for tidal flood mitigation. The embankment is designed to automatically adapt to changes in sea level using elastic and corrosion-resistant fiber materials. Numerical simulations based on the finite element method (FEM) were performed using ANSYS software to analyze the stress, strain, and deformation of the floating fiber embankment under hydrostatic pressure. The simulation results showed a maximum stress of 8231 x 10^6 Pa with a maximum deformation of 0.43 meters. Laboratory experiments using a 1:20 scale prototype validated the simulation results, with a maximum stress of 8210 x 10^6 Pa and a maximum deformation of 0.41 meters. The results showed that the floating fiber embankment has good adaptive capabilities in resisting hydrostatic pressure and functions automatically without requiring manual intervention. This technology has the potential to be an effective and sustainable solution for tidal flood mitigation in coastal areas, especially in areas that often experience land subsidence and sea level rise due to climate change.
Selection of Sediment Retention Structure Type in Coastal Reservoir (Case Study of Terboyo Retention Pond, Semarang) Susanto, Deddy; Wahyudi, Slamet Imam; Soedarsono, Soedarsono
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.18176

Abstract

To overcome the problem of flooding and tidal flooding in the city of Semarang, especially in the eastern part of Semarang, the Semarang-Demak Toll Road was built which is integrated with the sea wall. The sea wall is planned to prevent sea water from entering the land area, however, the sea wall will also block the direct flow of several rivers to the sea so that a fairly large coastal reservoir is needed. As in general, coastal reservoirs and retention ponds often experience sedimentation problems which have an impact on the economic value of the reservoir concerned, while in the planning of coastal reservoirs and retention ponds in general they are not equipped with sediment retaining structures. From this study, the results of the selection of the right type of sediment retaining structure to be applied in coastal reservoirs were obtained. The selection of the type of sediment retaining structure in this study used the AHP (Analytical Hierarchy Process) method, which is a decision support model that involves experts who have knowledge and experience in planning or implementing retention ponds or sedimentation in river estuaries. From the results of the global priority analysis above, the weight of each alternative sediment retaining structure is obtained, namely a fixed dam of 33.21%, a vertical movable dam with an upper opening of 31.35%, without a sediment retaining structure of 19.61%, a vertical movable dam with a lower opening of 15.84%. From the results of the AHP analysis above, the highest weight was obtained, which was then used as a decision maker to choose the type of building with the highest value, namely a sediment retaining structure in the form of a permanent dam.
Co-Authors Abdul Rochim Adhi Susilo Alamsyah, Nurul Ikhsan Ari Sentani, Ari Awiyati, Ian Tangguh Awliya Tribhuwana bakhtiar, faridian Deddy Susanto Erviyanto, Danang Firwanto, Mufti Gantika, Eko Henny Pratiwi Adi Hermin Poedjiastoeti Kartono Wibowo, Kartono Kresfiaprilianto, Ananda Dwi Setiawan Kusumadewi, Adlina Luthfi B, Mohammad Kevin Ni'am, Moh. Faiqun Niam, M. Faiqun Niam, Moh Faiqun Ni’am, M. Faiqun Ni’am, Moh Faiqun Ni’am, Moh. Faiqun Ni’am Permana, Herry Ade Pratama, Daffa Aditya Ragil, Nafii Rusmiyanto, Dedy Safitri, Adam Senoputro, Rifqy Anggoro Setyaningsih, Theresia Puji Soedarsono Soedarsono Sunaryo Sunaryo Umi Rahayu, Umi Urfiansyah, Muhammad Thoriq Wahyudi, Rahma Sarah Wahyudi Sarah Wahyudi, Rahmatia Sarah