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All Journal Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Briliant: Jurnal Riset dan Konseptual Teras Jurnal Rang Teknik Journal SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal DISPROTEK Jurnal Kacapuri : Jurnal Keilmuan Teknik Sipil JURNAL TEKNIK SIPIL UNAYA Jurnal Pengabdian dan Edukasi Sekolah (Jubaedah) Teknika DEARSIP: Journal of Architecture and Civil Journal of Civil Engineering and Technology Sciences Jurnal Teknik Sipil Jurnal Civil Engineering Study Jurnal Pengabdian KOLABORATIF Journal of Research and Technology Studies Jurnal Teknik Sipil
Kukuh Wisnuaji Widiatmoko
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Analisis Kebisingan Lalu Lintas dan Generator Set Kampus Universitas Semarang Fahrudin Ahmad; Roni Kartika Pramuyanti; Kukuh Wisnuaji Widiatmoko
Jurnal Teknik Sipil Vol. 17 No. 2 (2024): Desember 2024
Publisher : Faculty Of Engineering University 17 August 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/jts.v17i2.2363

Abstract

This study analyzes noise levels caused by traffic activities and generator sets (genset) in the Semarang University environment. Measurements were conducted using descriptive analytical methods by comparing measurement results against noise quality standards according to KepmenLH No.48 of 1996. Data collection was carried out in November 2023 at three location points (in front of Building V, Sports Center, and USM gate) during morning (08.00-08.30), afternoon (12.30-13.00), and evening (17.30-18.00) on weekdays and weekends. Measurement results showed traffic noise levels on weekdays reached 88.3 dB in front of the Sports Center, 85.3 dB at Building V, and 82.1 dB at the USM gate. On weekends, the highest noise level reached 82 dB. Generator noise measurements in stationary conditions reached 108.4 dB and increased to 112.4 dB during loading. The highest vehicle volume occurred during weekday evenings, reaching 3,176 vehicles/hour. Research results indicate that noise levels in the campus environment are above the permitted threshold of 55 dB for educational areas. The study recommends the construction of noise barriers and evaluation of generator placement to reduce noise impact on campus activities.
Analisis Nilai Amplitudo Jembatan Rangka Baja Menggunakan Beban Berjalan Dengan Metode Fast Fourier Transform (FFT) Bagus Acung Billahi; Kukuh Wisnuaji Widiatmoko; Faizal Mahmud
Jurnal Teknik Sipil Vol. 18 No. 2 (2025): Desember 2025
Publisher : Faculty Of Engineering University 17 August 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/hbv9my29

Abstract

A steel truss bridge is a structure constructed from a series of interconnected steel bars. The loads received by this structure are analyzed and transferred to the steel bars that make up the structure. Factors that need to be analyzed in bridge construction include the location and surrounding environmental conditions. After identifying the type of soil and bedrock beneath the surface, the materials used must meet strength or durability test standards before the bridge can be operated. The materials used must comply with the Indonesian National Standard (SNI). In addition to the factors mentioned above, the bridge must undergo a feasibility evaluation. Among the various tests used to evaluate bridge strength, one is vibration testing. The vibration test method, when compared to the load test method, shows higher cost efficiency and does not cause damage to the structure.
PLANNING OF WASTEWATER TREATMENT PLANTS IN THE TAPIOCA FLOUR INDUSTRY USING ANAEROBIC FILTER UPFLOW SYSTEM (UAF) (Case Study of Mojoagung Village, Trangkil District, Pati Regency) Mohammad Debby Rizani; Farida Yudaningrum; Kukuh Wisnuaji Widiatmoko; Fiki Nur Fitriani; Eka Silvi Nur Fianty; Intan Mayasari
DEARSIP : Journal of Architecture and Civil Vol. 6 No. 01 (2026): Desember 2025 - Mei 2026
Publisher : Faculty of Engineering, Universitas Islam Darul Ulum Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52166/dearsip.v6i01.13006

Abstract

Mojoagung Village, Trangkil District, Pati Regency, is one of the major tapioca flour production areas in Central Java, Indonesia. The wastewater generated from tapioca processing is commonly discharged directly into nearby rivers without adequate treatment, causing unpleasant odors, low pH levels, and environmental pollution that may disturb the aquatic ecosystem. This study aimed to design a Wastewater Treatment Plant (WWTP) for the tapioca flour industry using an Upflow Anaerobic Filter (UAF) system combined with biofilter media consisting of bioballs, honeycomb media, and pumice stone. The research employed a quantitative analytical method based on wastewater quality testing and hydraulic design calculations. The parameters analyzed included Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solids (TSS), cyanide (CN), and pH. The laboratory results indicated that the BOD, COD, and TSS concentrations met the wastewater quality standards, while the CN and pH parameters did not comply with the applicable standards due to acidic conditions and noticeable discoloration. Based on the design calculations, the proposed WWTP requires a land area of 29.28 m³ with dimensions of 18.3 m in length, 1.6 m in width, and 2.5 m in depth. The estimated construction cost of the WWTP was Rp 69,959,471.109. The proposed UAF-based treatment system is expected to reduce environmental pollution and improve the management of wastewater generated from tapioca flour production.
ANALISA IRIGASI PERSAWAHAN DI DAERAH ALIRAN SUNGAI SILUGONGGO Kukuh Wisnuaji Widiatmoko
Rang Teknik Journal Vol 9, No 1 (2026): Vol. 9 No. 1 Januari 2026
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31869/rtj.v9i1.6558

Abstract

The Silugonggo River is located in Pati Regency, Central Java, this river is included in the Juwana Watershed Area. Most of the residents around the Silugonggo river work as farmers, where every dry season they are faced with a lack of water which results in a decrease in crop yields. Based on the existing problems, an optimization study was carried out on effective planting schedules and patterns in the surrounding area.The area of the irrigation area is determined to be 12 km long, with a radius of 1.5 km on the right and left sides of the river, with an area of 4,891 Ha. The methodology used, including Hydrological Analysis, includes calculating regional average rainfall (Thissen Polygon), effective rainfall (Weibull Probability), Maximum rainfall, mainstay discharge (Weibull), climatological analysis using Evapotranspiration (Modified Penmann), and Percolation, then carried out Analyze water requirements for plants and determine planting pattern schedules. The results of the calculations show that the schedule and planting pattern for Alternative I starts on November 1, because the amount of water required is less than the other alternatives. There are several months where water availability is not able to meet the water needs of the entire DI, this occurs in August II, September I and II.
Pengaruh Pelapukan Lapisan Batuan Terhadap Stabilitas Lereng Adolf Situmorang; Kusrin Kusrin; Ngudi Hari Christa; Yesina Intan Pratiwi; Galih Widyarini; Kukuh Wisnuaji Widiatmoko
Teras Jurnal : Jurnal Teknik Sipil Vol. 12 No. 2 (2022): Volume 12 Nomor 2, September 2022
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v12i2.707

Abstract

Abstrak Longsor merupakan suatu proses perpindahan massa batuan atau tanah akibat pengaruh gravitasi sebagai respon terhadap aktivitas alam yang menyebabkan kerusakan morfologi permukaan lereng, dan longsor yang terjadi di Wonogiri kemungkinan karena pelapukan lapisan batuan akibat curah hujan yang sering terjadi di aera tersebut. Penelitian ini dilakukan dengan tahapan pengambilan sampel batuan, pengukuran dan pengumpulan data sekunder. Klasifikasi batuan menggunakan parameter RQD, RMR dan Q-system untuk mengetahui karakteristik batuan. Hasil dari klasifikasi tersebut menunjukkan bahwa lapisan batuan di lokasi longsor masuk dalam kategori sedang hingga sangat rentan mengalami pelapukan. Dengan mempertimbangkan siklus curah hujan dan jumlah hujan dalam hari yang dihitung dalam satu tahun diketahui ada pengurangan kekuatan batuan berdasarkan penelitian terdahulu. Hasil analisa metode element hingga menunjukkan terjadi pengurangan kekuatan batuan berdasarkan parameter geser yang berakibat pada stablititas lereng batuan tersebut, dan pada tahun ke-10 diindikasikan nilai Safety Factor (SF) <1,3. Kata kunci: Kuat geser, siklus basah-kering, batuan  Abstract Landslide is a process of mass transfer of rock or soil due to the influence of gravity in response to natural activities that cause damage to the surface morphology of the slopes, and the landslide that occurred in Wonogiri was probably due to weathering of rock layers due to frequent rainfall in the area. This research was conducted with the stages of taking rock samples, measuring and collecting secondary data. Rock classification uses RQD, RMR and Q-system parameters to determine rock characteristics. The results of the classification indicate that the rock layers at the landslide location are in the moderate to very vulnerable category to weathering. By considering the rainfall cycle and the amount of rain in days calculated in one year, it is known that there is a reduction in rock strength based on previous research. The results of the finite element method analysis showed that there was a reduction in rock strength based on shear parameters which resulted in the stability of the rock slopes, and 10th year indicated the value of Safety Factor (SF) <1.3. Keywords: Landslide, wet-dry cycle, rock 
Numerical and Field-Based Analysis of Soil Nailing for Slope Stability Adolf Situmorang; Anik Kustirini; Kukuh Wisnuaji Widiatmoko
Teknika Vol. 20 No. 2 (2025): Oktober
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/teknika.v20i2.12918

Abstract

Landslide occurrences in Indonesia are predominantly associated with soft soils and inadequate drainage conditions during periods of high-intensity rainfall. Nevertheless, the country’s diverse geological settings pose significant challenges for implementing effective landslide mitigation strategies, particularly as most existing studies are concentrated on specific islands, each characterized by distinct geotechnical and geomorphological conditions. In certain areas of Flores Island, landslides have been observed at relatively shallow depths and steep slope angles, often occurring in remote locations. Additionally, the tectonic setting of Flores Island—surrounded by multiple active seismic sources—increases the susceptibility to both rockfalls and earthquake-induced landslides. Soil nailing has emerged as a promising stabilization technique in such conditions, particularly where subsurface materials exhibit high resistance to penetration (N-SPT > 60). Despite the steep terrain, the technique remains viable due to its adaptability and minimal disturbance to the existing slope geometry. Stability analyses conducted using both the FEM and LEM under static loading conditions indicate that soil nailing is effective in reinforcing the slope without inducing significant deformation. Furthermore, the reinforced slopes demonstrate sufficient stability under seismic loading, satisfying the design earthquake criteria stipulated by the Indonesian Standard. 
Pelatihan dan Pendampingan terhadap Penerapan K3 pada Pekerja Konstruksi Skala Kecil di Kota Semarang Kukuh Wisnuaji Widiatmoko; Bagus Acung Billahi; Faizal Mahmud; Hendra Masvika
Jurnal Pengabdian KOLABORATIF Vol. 3 No. 2 (2025): July
Publisher : Faculty of Engineering, Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/kolaboratif.v3i2.11749

Abstract

The implementation of Occupational Safety and Health (OSH) in small-scale construction projects remains a serious challenge, particularly in Semarang City. Workers in this sector generally do not have an adequate understanding of the importance of using Personal Protective Equipment (PPE) in supporting occupational safety. This community service activity aims to provide direct training and mentoring to small-scale construction workers to understand and apply OSH in their daily work activities. The implementation method involves an initial survey through interviews and field observations, followed by participatory training and mentoring in the practice of using PPE. The results of the activity show that after the training, workers' understanding and compliance with the use of PPE increased from 50% to 80%. However, some workers still require further mentoring to get used to implementing OSH consistently. This program is felt to have a positive impact in raising awareness that occupational safety is not just a formal obligation. Still, a basic need that protects oneself, is reflected in the results of the post-test questionnaire that 90% of participants expressed their desire to comply with and implement the OSH program.
Pendampingan Teknis Cara Pemasangan Bronjong di Dusun Sukuh Kabupaten Karanganyar Dhamang Budi Cahyono; Kukuh Wisnuaji Widiatmoko; Faizal Mahmud; Ngudi Hari Crista
Jurnal Pengabdian KOLABORATIF Vol. 3 No. 2 (2025): July
Publisher : Faculty of Engineering, Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/kolaboratif.v3i2.11760

Abstract

Landslides are a frequent natural disaster in the Karanganyar area, especially in hilly areas with high rainfall and fragile geological conditions. This community service activity aims to provide technical assistance on gabion installation as a landslide mitigation effort in Dusun Sukuh, Ngargoyoso District, Karanganyar Regency. The method includes lectures, demonstrations, and direct practice, covering preparation stages, material selection, and correct installation techniques. The results showed a significant increase in participants' understanding, from an average pre-test score of 32% to 70% in the post-test. This indicates that the program effectively improved the knowledge and skills of the community regarding gabion installation techniques. The community showed active participation and high enthusiasm, reflecting their awareness of the importance of disaster mitigation efforts. This activity is expected to support the sustainability of community-based disaster risk reduction efforts in the region.
Pendampingan Perencanaan Saluran Irigasi di Desa Sambirejo Kecamatan Wirosari Kabupaten Grobogan Kukuh Wisnuaji Widiatmoko; Bagus Acung Billahi; Faizal Mahmud
Jurnal Pengabdian KOLABORATIF Vol. 3 No. 2 (2025): July
Publisher : Faculty of Engineering, Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/kolaboratif.v3i2.12345

Abstract

One way to utilize water resources is through the development of irrigation networks. Two common approaches to irrigation planning are the expansion method and the intensification method. Sambirejo Village is one of the areas with extensive land that can be used for rice cultivation. However, due to the large agricultural area, several paddy fields do not consistently receive a water supply from the existing irrigation network. Geographically, Sambirejo Village is located near both large and small rivers, which can be utilized as sources of irrigation water. The main issues faced by the local partners include a lack of understanding in planning irrigation channels to ensure optimal functionality. As a result, existing irrigation systems do not operate as intended, and the community has not yet been able to harness the full potential of the nearby water sources for irrigation purposes. To improve the availability of irrigation water in Sambirejo Village, the activity aimed to provide partners with knowledge on irrigation channel planning, as well as insights into watershed areas that can serve as water sources and the layout of rice fields to be irrigated. The implementation method involved providing explanations on how the irrigation system was designed to utilize gravity flow without pumps, and demonstrating the positive impacts of a properly functioning irrigation network. As a result of the activity, a priority area of approximately 1,200 meters was identified for irrigation channel planning. Technical planning documents were also prepared, including working drawings, channel dimensions, field measurement results, and a cost estimate (RAB), which can be used as a basis for proposing development programs funded by village budgets or related government agencies.
Pendampingan Pemasangan U-Dicth untuk Saluran Drainase Ruas Jalan Semarang-Godong Provinsi Jawa Tengah Dhamang Budi Cahyono; AR Hanung Triyono; Kukuh Wisnuaji Widiatmoko; Bagus Acung Billahi; Faizal Mahmud
Jurnal Pengabdian KOLABORATIF Vol. 4 No. 1 (2026): January
Publisher : Faculty of Engineering, Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/kolaboratif.v4i1.13143

Abstract

The Community Service Program (PkM) conducted by the Faculty of Engineering, Universitas Semarang, in collaboration with PT. Valentara Sarana Raya and the community of Godong Village aimed to improve the drainage function along the Semarang–Godong road and enhance the technical skills of construction workers through training and mentoring in the installation of precast u-ditch drains. The program was carried out from September to December 2025, with the main field activity on October 24, 2025. A total of 15 workers participated in the training, showing an increase in average scores from 56.7 to 88.5, or a 56.1% improvement, particularly in technical installation and occupational safety practices. Technically, a 120-meter u-ditch channel was successfully installed in compliance with the Ministry of Public Works Regulation No.14/PRT/M/2018, reducing flooding by up to 90%. The activity also established the “Godong Drainage Task Force (POKJA Drainase Godong)” to ensure continuous maintenance. The program outputs include a publication in the journal, online media coverage, a documentation video on the LPPM USM YouTube channel, and a registered intellectual property poster titled “Technical Assistance for U-ditch Installation.” Overall, this PkM successfully improved drainage infrastructure, enhanced the competencies of local workers, and strengthened community participation, serving as a replicable model of sustainable, community-based implementation of the tri dharma of higher education.
Co-Authors Adolf Situmorang Adolf Situmorang Adwin Pramana, Dio Agus Margiantono AGUS MULDIYANTO Ahmad Hakim Bintang Kuncoro Andhika Wibisono, Mahal Anik Kustirini, Anik AR Hanung Triyono Aryana, Srie Adi Asa Mulia Augusta Dian Aulia Bagus Acung Billahi Bagus Acung Billahi Bambang Purnijanto Bambang Tutuko Billahi, Bagus Acung Budiono Joko Nugroho Christa, Ngudi Hari crista, ngudi Dhamang Budi Cahyono Dhamang Budi Cahyono Diah Setyati Budiningrum Eka Silvi Nur Fianty Erlinasari Erlinasari Fahrudin Ahmad Fahrudin Ahmad Fahrudin Ahmad Faizal Mahmud Faizal Mahmud Faizal Mahmud, Faizal Farida Yudaningrum Fiki Nur Fitriani Fitria Maya Lestari Galih Widyarini Hani Purwanti Imam Agung Baskoro Intan Mayasari Kusrin Kusrin Kusrin, Kusrin Lintang Enggartiasto Masvika, Hendra Mohammad Debby Rizani Ngudi Hari Crista pratiwi, yesina intan Retno Sri Waryani Roni Kartika Pramuyanti roni kartika pramuyanti Son Haji Son Haji Sri Wanto Trias Widorini Wibisono, Mahal Andhika Yesina Intan Pratiwi Yusuf Nurul Hilal