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All Journal Dimas: Jurnal Pemikiran Agama untuk Pemberdayaan Jurnal Teknik Sipil Jurnal Rekayasa Sipil Journal of Advanced Civil and Environmental Engineering Jurnal Pemberdayaan Masyarakat Madani (JPMM) JOURNAL OF CIVIL ENGINEERING, BUILDING AND TRANSPORTATION Jurnal Pengembangan Rekayasa dan Teknologi Astonjadro Jurnal Teknik Sipil Giratory Upgris Teknika Dulang: Jurnal Pengabdian Kepada Masyarakat Journal of Civil Engineering and Technology Sciences Jurnal Teknik Sipil Jurnal Pengabdian KOLABORATIF JMT (Jurnal Matematika dan Terapan) KOPEMAS
Masvika, Hendra
Universitas Semarang
Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Perbaikan Tanah Ekspansif Dengan Penambahan Pasir Kasar Sebagai Stabilisator Faizal Mahmud; Hendra Masvika; Kukuh Wisnuaji Widiatmoko; Fahrudin Ahmad
Jurnal Teknik Sipil Vol. 17 No. 1 (2024): Juni 2024
Publisher : Faculty Of Engineering University 17 August 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/jts.v17i1.1394

Abstract

Stabilisasi tanah merupakan suatu langkah untuk meningkatkan sifat-sifat dan kekuatan pada tanah. Salah satu metode untuk meningkatkan daya dukung tanah adalah dengan menambah atau mencampur dengan material yang memiliki nilai daya dukung yang tinggi. Penelitian akan difokuskan pada daya dukung tanah dengan menambah atau mencampur pasir kasar menggunakan pengujian Atterberg Limits dan Proctor yang diharapkan dapat meningkatkan daya dukung tanah terhadap kepadatannya. Penelitian dilakukan di Laboratorium Mekanika Tanah Fakultas Teknik Univesitas Semarang dengan cara membuat sampel dari hasil pemadatan standar, kemudian sampel diberikan penambahan pasir kasar dengan persentase penambahan sebesar 0%, 10%, 30%, dan 50% untuk mendapatkan nilai Atterberg Limits dan Proctor maksimum setelah dilakukan penambahan pasir kasar. Pada masing-masing pengujian didapatkan hasil bahwa pada tanah tersebut mengalami peningkatan daya dukung setelah dilakukan stabilisasi, sehingga dapat disimpulkan bahwa pasir kasardapat digunakan untuk bahan stabilisasi. Pada masing-masing pengujian didapatkan hasil bahwa proses stabilisasi tanah optimum berada pada campuran 50%, hal ini terjadi karena sifat dari pasir kasar yang befungsi sebagai bahan pengisi tetapi tidak memiliki sifat mengikat, sehingga ketika volume pasir kasar telah memenuhi rongga-rongga tanah dan memiliki sisa, maka sisa pasir kasar tersebut akan menumpuk dan memadat bersama tanah sehingga lebih menstabilkan ikatan tanah yang telah terbentuk.
Mathematical Modelling Demineralisasi Fe pada Profil Baja IWF dalam Kondisi pH Asam dan Basa Lila Anggraini; Hendra Masvika; Sriwanto; Sudanti; Muhammad Latif
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: 10.56444/2xnyf630

Abstract

Profil baja IWF (Instrument Wide Flange) merupakan elemen struktur yang banyak digunakan pada bangunan industri karena kemudahan dalam pemasangan dan fleksibilitasnya. Namun, kondisi lingkungan ekstrem seperti genangan air dengan pH asam maupun basa dapat mempercepat proses demineralisasi (korosi) pada baja. Penelitian ini bertujuan untuk mengidentifikasi laju kehilangan unsur Fe dari profil baja IWF akibat perendaman dalam larutan dengan pH ekstrem, serta menyusun model matematis yang menggambarkan proses demineralisasi. Metode yang digunakan adalah uji laboratorium dengan perendaman potongan baja dalam larutan pH 4, 7, dan 10 selama 72 jam, dilanjutkan dengan uji TDS, ORP, dan morfologi. Hasil menunjukkan bahwa pada pH 4, terjadi demineralisasi Fe tertinggi sebesar 16,167 mg dengan rata-rata ORP sebesar 195,5 mV dan TDS 732,55 ppm. Berdasarkan data tersebut, dibentuk model matematis diferensial untuk memprediksi laju demineralisasi. Disarankan penggunaan pelapis (coating) yang sesuai untuk meningkatkan umur pakai struktur baja.
ANALISIS FAKTOR–FAKTOR YANG MEMPENGARUHI KETERLAMBATAN PROYEK PEMBANGUNAN GUDANG LOGISTIK POLRES LAMONGAN Mayasari, Intan; Zamaniah, Zamaniah; Masvika, Hendra; Permatasari, Citra; Ramadhon, Ardiana; Wardani, Agustina
Jurnal Teknik Sipil Giratory UPGRIS Vol 7, No 1: Juni 2026
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/giratory.v7i1.28133

Abstract

The construction of the Lamongan Police Logistics Warehouse, as part of public infrastructure, requires efficient supervision to support police operational needs. However, several operational issues have arisen, hindering timely completion. One of the main problems is delays in material delivery, which significantly disrupt project progress. This study aims to analyze the factors influencing delays in the warehouse construction project, focusing on the roles of contractors, suppliers, consultants, and project owners. Using a quantitative approach, the research identifies both internal and external factors that contribute to construction delays. Multiple linear regression analysis was employed to examine the relationship between independent variables (work environment, material delays, equipment, labor, and design changes) and project implementation delays. The findings indicate that labor is the most influential factor, with a beta value of 0.455, followed by design changes, which have a positive though relatively minor effect. In contrast, work environment, material delays, and equipment factors show no significant impact. To mitigate delays, the study recommends strengthening coordination among stakeholders, improving resource management, and enhancing project planning. The research provides valuable insights for improving construction project management and preventing unforeseen delays in similar future projects.
Bimbingan Teknis Peningkatan Kompetensi Pengawasan Pekerjaan Konstruksi Pembangunan Kampung Nelayan Merah Putih Ferry Firmawan; Hendra Masvika; Sutik; Purwanto Purwanto; Dhini Rahmahajsuly; Maesa Widiyafi; Cahya Hari Prayoga
Jurnal Pengabdian KOLABORATIF Vol. 4 No. 2 (2026): July
Publisher : Faculty of Engineering, Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/kolaboratif.v4i2.13815

Abstract

The development of the Kampung Nelayan Merah Putih project in the coastal area of Centra Java faces significant challenges, including land subsidence, tidal flooding, and highly saline environmental conditions that may reduce infrastructure durability. These conditions require competent construction supervision to ensure project quality, schedule, and cost performance. This Community Service Program aimed to enhance the technical and managerial competencies of personnel from the Semarang Fishing Port Center (BBPI) through technical guidance on construction supervision. The program consisted of three stages: dissemination of construction quality management principles, training on field inspection methods and technical administration, and stakeholder coordination to harmonize supervision practices. Program effectiveness was evaluated using pre-test and post-test assessments involving 22 participants who completed 18 questions. The results demonstrated a substantial improvement in participants' knowledge, with the mean score increasing from 59.77 (62.9% of the maximum score) to 81.59 (85.9%), representing a gain of 21.82 points (36.5%). The minimum score increased from 50 to 70, and no participant scored below 70 in the post-test. The training also strengthened participants' shared understanding of quality control, contract administration, field inspection, and the achievement of the project's triple constraints. These findings indicate that the technical guidance effectively improved construction supervision competencies and contributed to more professional, accountable, and sustainable management of coastal infrastructure projects.
Assessment of Filtered Water Quality Using a Simple Filtration System in Kalikayen Village, Semarang Regency Sriwanto; Hendra Masvika; Lilla Angraini; Bambang Tutuko
JOURNAL OF CIVIL ENGINEERING BUILDING AND TRANSPORTATION Vol. 10 No. 2 (2026): JCEBT SEPTEMBER
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jcebt.v10i2.18489

Abstract

Access to water with acceptable quality remains an important issue in rural communities that rely on surface water or groundwater for domestic activities. This study evaluated the performance of a simple gravity-fed filtration system using gravel, silica sand, activated carbon, and manganese zeolite as filter media for improving water quality in Kalikayen Village, East Ungaran District, Semarang Regency. Water samples were collected before and after filtration and analyzed at the Health Laboratory Technical Implementation Unit of Semarang City for total ammonia, biochemical oxygen demand (BOD), chemical oxygen demand (COD), total suspended solids (TSS), and pH. The results showed that filtration reduced total ammonia from 0.78 to 0.17 mg/L and TSS from 50 to 3 mg/L, indicating substantial removal of suspended and ammonia-related contaminants. However, BOD increased from 0.44 to 1.19 mg/L, while COD remained below 0.50 mg/L before and after filtration. The pH decreased slightly from 7.60 to 7.46 but remained near neutral. Overall, the multi-media filtration system substantially improved selected water-quality characteristics, particularly TSS and total ammonia, although the increase in BOD indicates that further investigation of organic matter behavior and filter operation is required. The findings demonstrate the potential of a low-cost gravity-fed filtration system as a practical preliminary water-treatment option for rural communities.
Pemodelan Kondisi Geologi Teknik Daerah Amblesan Tanah Jalan Semarang Outer Ring Road (SORR) Hendra Masvika; Dhamang Budi Cahyono; Sri Wanto
Jurnal Pengembangan Rekayasa dan Teknologi Vol. 5 No. 2 (2021): November (2021)
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/jprt.v17i2.3970

Abstract

The Semarang Outer Ring Road (SORR) project which is located on soft soil has the potential to experience land subsidence due to consolidation. The consolidation settlement is predicted to continue along with the length of time the consolidation is completed. It is necessary to study subsurface engineering geology to obtain an overview of the structure of the soil layers and the thickness of the soft soil layer that has the potential to undergo consolidation. Based on the data of 4 borehole points and the results of laboratory tests, evaluation and correlation were carried out to obtain the stratigraphy of the soil layer. The stratigraphic results showed that the total depth of the soil investigation was 50 m, with the surface soil layers generally consisting of embankment soil, sandy clay, sandy silt, and clayey silt. The distribution of clay and silt with very soft to medium consistency dominates the soil layer structure with a thickness varying between 15.50-28.00 m. This condition has the potential to cause an increase in the magnitude and rate of consolidation due to the surface loading of the embankment soil.
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.
Peningkatan Kapasitas Siswa SMA Institut Indonesia tentang Penulisan Ilmiah Bertemakan Green Building Hani Purwanti; Ferry Firmawan; Hendra Masvika; Purwanto
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.v4i1.12727

Abstract

The increasing human activities and climate change have significantly contributed to global warming, which threatens environmental sustainability. The construction sector is one of the major contributors to environmental degradation and climate change due to its high carbon emissions. As a solution, the implementation of the green building concept has been developed. This concept emphasizes the use of renewable energy and the application of zero-energy-use principles. This condition creates opportunities for students of SMA Institut Indonesia Semarang to produce scientific articles and academic writings related to green building. This activity aims to improve students’ abilities in writing scientific articles on green building themes that align with environmental and sustainability issues. The methods applied include lectures, discussions, and simulations. The pre-test and post-test results indicate an increase in participants’ understanding from 43.75% to 81.25% regarding green building concepts and scientific writing. This improvement serves as an indicator of the program’s success. The activity received positive responses and full support from the school, and it had a beneficial impact on enhancing students’ fundamental understanding of scientific writing, particularly in the green building topics that are highly relevant to current environmental issues.
Infiltration Wells as a Solution to Runoff and Flooding Problems in Purwodinatan Subdistrict Semarang City Hendra Masvika; Bintang Husni Haikal; Purwanto Purwanto; Ferry Firmawan; Nur Khasanah
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.v4i1.13017

Abstract

During the rainy season or under heavy rainfall events, roads in Purwodinatan Subdistrict, Semarang City, frequently experience water ponding. This condition disrupts community activities and other road users. Insufficient drainage capacity to accommodate rainfall volume, along with inadequate drainage maintenance that leads to sedimentation, contributes to surface runoff and water inundation. These conditions require further mitigation measures to control surface runoff and shorten the drainage recession time. Therefore, the planning of infiltration wells is proposed as an alternative solution to address this problem. The implementation method adopted in this study consists of a literature review related to the design dimensions of infiltration wells, followed by the calculation of the Bill of Quantities (BoQ). The planning conducted represents a preliminary approach and is solely based on a literature review of infiltration well design, without involving detailed technical analyses of infiltration well capacity. Based on the BoQ calculation, a cost of IDR 6,462,954.92 is required to construct one infiltration well along the Bubakan Baru Street segment, where 9 infiltrations well locations are identified within a single road segment. The final outputs of this activity include a map of proposed infiltration well locations and the BoQ calculation to be submitted to the subdistrict authority. This activity serves as a preliminary planning stage to assist the community in estimating the dimensions, number of locations, and cost of infiltration wells.
Implementation of Horizontal Infiltration Pipes System for Sustainable Drainage at Demakan Village Office, Banyubiru, Semarang Regency Lindawati; Fitria Maya Lestari; Etika Herdiarti; Yonikha Rivani; Hendra Masvika
Jurnal Pengabdian KOLABORATIF Vol. 4 No. 2 (2026): July
Publisher : Faculty of Engineering, Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/kolaboratif.v4i2.13542

Abstract

The primary issue in Demakan Village, Banyubiru, Semarang Regency, is the high volume of rainwater runoff that frequently causes puddles in public areas. This community service aims to implement Horizontal Infiltration Pipe (HIP) technology as an eco-friendly drainage solution. The implementation method consisted of coordination and socialization with village officials and residents, site surveys, system design, and installation of a perforated horizontal infiltration pipe network at the Demakan Village Office on 15 November 2025. The implementation resulted in the successful establishment of a functional HIP system that reduced localized ponding around the office area, facilitated rainwater infiltration into the surrounding soil, and served as a practical demonstration of sustainable drainage technology for the community. The activity also strengthened the understanding of village stakeholders regarding environmentally sound drainage management and groundwater conservation. In conclusion, the HIP system proved to be a feasible alternative to conventional vertical infiltration structures, particularly in areas with limited space and specific soil conditions. The installed system can serve as a pilot model for sustainable drainage management in Banyubiru, while routine maintenance and periodic monitoring are recommended to ensure long-term system performance and support groundwater recharge.
Co-Authors Abda Abda Adolf Situmorang Agus Darmawan Adi Agustina Wardani Andie Julian Arfa Andie Julian Arfa Angga Setiawan Pamungkas Angga Setiawan Pamungkas Annisa Zahrotun Na'imah Baehaqi Bagus Acung Billahi Bagus Acung Billahi Bambang Tutuko Bintang Husni Haikal Cahya Hari Prayoga Cahyono, Dhamang Budi Chatarina Umbul Wahyuni Dhamang Budi Cahyono Dhamang Budi Cahyono Dhini Rahmahajsuly Diah Rahmawati Diah Rahmawati Diah Setiati Budiningrum Edy Susilo Eka Bogi Anisa Eka Bogi Anisa Etika Herdiarti Fahrudin Ahmad Faizal Mahmud Faizal Mahmud Faris, Fikri Ferry Firmawan Fitria Maya Lestari Hari Setijo Pudjihardjo Intan Mayasari, Intan Izzatul Yazidah, Izzatul Kukuh Wisnuaji Widiatmoko Kusrin Kusrin Kusrin Kusrin, Kusrin Lila Anggraini Lilla Angraini Lindawati Maesa Widiyafi Marshanda Alifia Warda Misbakhus Siddiq Mohammad Haidar Ibnu Mas'ud Muhammad Latif Muhammad Latif Nur Khasanah Nurhidayati Pamungkas, Wardana Galih PERMATASARI, CITRA Pudjihardjo, Hari Setijo Pudjihardjo, Hari Setijo Purnijanto, Bambang Purnijanto, Bambang Purwanti, Hani Purwanto Purwanto Purwanto Ramadhon, Ardiana Siddiq, Misbakhus Sri Wanto Sriwanto Sriwanto Sudanti Sutarno Sutarno Sutik Syamsiar, Syamsiar Trias Widorini Yonikha Rivani Zamaniah, Zamaniah