Rang Teknik Journal
type: channel
description: RANG TEKNIK JOURNAL, merupakan Jurnal Penelitian dan Kajian Ilmiah yang diterbitkan Fakultas Teknik Universitas Muhammadiyah Sumatera Barat yang terbit 2 (dua) kali dalam setahun. Penyunting menerima kiriman naskah hasil kajian dan penelitian untuk bidang 1. Teknik Elektro 2. Teknik Sipil 3. Teknik Mesin 4. Teknologi Informasi P-ISSN : 2599-2082 E-ISSN : 2599-2090
publisher: Fakultas Teknik Universitas Muhammadiyah Sumatera Barat
language: id-ID
publication name: Rang Teknik Journal
issn: 2599-2082
copyright: Rang Teknik Journal is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
items: PRELIMINARY DESIGN SNI 2847-2019 DAN MODEL PORTAL BETON 3D DENGAN ANALISIS DINAMIK SAP2000
items: ANALISIS PENGHEMATAN DAN KONSERVASI ENERGI DI GEDUNG PERKANTORAN
items: PENINGKATAN RASIO C/N LIMBAH CAIR TAHU DENGAN PENCAMPURAN SEKAM PADI UNTUK MENDAPATKAN POTENSI BIOGAS DAN ENERGI LISTRIK
items: THE EFFECT OF SEASHELL WASTE AS FINE AGGREGATE SUBSTITUTION ON THE COMPRESSIVE STRENGTH OF ECO-FRIENDLY CONCRETE
items: FAKTOR PENGHAMBAT SISTEM MANAJEMEN KESELAMATAN KONSTRUKSI PADA PROYEK JALAN PELABUHAN TELUK TAPANG
items: RANCANG BANGUN ALAT PEMISAH SAMPAH PADA PERUSAHAAN INDUSTRI
items: PERANCANGAN SISTEM PENGEREMAN DENGAN TEKNOLOGI MEDAN ELEKTROMAGNETIK PADA KENDARAAN
items: FAKTOR DOMINAN PENGHAMBAT PENGELOLAAN IPAL KOMUNAL DI KOTA SOLOK
items: IDENTIFIKASI DAN PERBANDINGAN FAKTOR KETERLAMBATAN DUA PROYEK JALAN DI KABUPATEN SOLOK
items: ANALISA IRIGASI PERSAWAHAN DI DAERAH ALIRAN SUNGAI SILUGONGGO
items: PERSEPSI DAN PREFERENSI PENGHUNI PERMUKIMAN DI SEMPADAN SUNGAI INDRAGIRI DAN ASPIRASI MASYARAKAT KECAMATAN TEMBILAHAN HULU KABUPATEN INDRAGIRI HILIR, RIAU
items: RANCANG BANGUN SISTEM INFORMASI PENYEWAAN ALAT DAN DEKORASI PESTA BERBASIS WEBSITE (STUDI KASUS: PERSADADITA DECORATION)
items: RANCANG BANGUN SISTEM INFORMASI PERSEDIAAN STOK BARANG BERBASIS WEBSITE (STUDI KASUS: PT. PERDANA SAKTI INDONESIA)
items: RANCANG BANGUN SISTEM INFORMASI PENDAFTARAN EKSTRAKURIKULER BERBASIS WEBSITE (STUDI KASUS: SDN 06 NGRINGO)
items: IDENTIFIKASI POTENSI BAHAYA BERDASARKAN IMPLEMENTASI SELF EXPLAINING ROAD DAN FORGIVING ROAD DENGAN METODE HIRA
items: PENGARUH ANALISA LAJU KOROSI DAN KEKERASAN TITANIUM DALAM LARUTAN SBF KOKUBO UNTUK APLIKASI ORTODONTIK
items: STUDI PERBAIKAN SALURAN SEKUNDER DAERAH KARANG AGUNG HILIR DI DESA SR AGUNG
items: IDENTIFIKASI PEMELIHARAAN SALURAN SEKUNDER (SPD) DAERAH IRIGASI RAWA DELTA AIR SUGIHAN KANAN DI DESA SUKA MULYA
items: EVALUASI DOKUMEN PERENCANAAN GEDUNG KANTOR BALAI PELAKSANA PEMILIHAN JASA KONSTRUSI (BP2JK) WILAYAH SUMATERA SELATAN
items: EVALUASI DOKUMEN PERENCANAAN TEKNIS REHABILITASI GEDUNG KANTOR BALAI PRASARANA PERMUKIMAN WILAYAH (BPPW) SUMSEL DALAM BIDANG STRUKTUR DAN BAHAN SESUAI DAFTAR SIMAK SE DJCK 04 TAHUN 2022
items: IDENTIFIKASI METODE PEMELIHARAAN BERKALA PADA SALURAN SEKUNDER (SDU) DAERAH IRIGASI RAWA DELTA AIR SUGIHAN KANAN DI DESA TIRTA MULYA
items: PERSIAPAN PERANCANGAN SISTEM RAIN WATER HARVESTING (RWH) DI DESA BANYU URIP, KECAMATAN TANJUNG LAGO, KABUPATEN BANYUASIN SEBAGAI UPAYA PENYIMPANAN CADANGAN AIR BERSIH PADA MUSIM KEMARAU
items: ASSESSING COMPLIANCE AND BARRIERS IN FUNCTIONAL FEASIBILITY CERTIFICATION OF PUBLIC BUILDINGS: CASE EVIDENCE FROM BANDA ACEH, INDONESIA
items: PEMANFAATAN SINYAL PUTARAN GENERATOR DARI DCS UNTUK PENGGANTIAN SPEED RELAY ELEKTRO MEKANIK PADA SISTEM EKSITASI GENERATOR HIDRO
items: PENINGKATAN SAVING KWH DAN PENEKANAN SUSUT NON-TEKNIS MELALUI OPTIMALISASI P2TL DI PT PLN (PERSERO) ULP MUARA TEBO

PRELIMINARY DESIGN SNI 2847-2019 DAN MODEL PORTAL BETON 3D DENGAN ANALISIS DINAMIK SAP2000
type: item
description: preliminary design untuk perancangan rangka portal bangunan sekolah 2 tingkat. Tujuan utama dari preliminary design ini adalah untuk memberikan gambaran awal mengenai konsep struktural, dimensi elemen-elemen utama, dan pertimbangan desain yang akan digunakan dalam tahap perancangan lebih lanjut. Bangunan sekolah 2 tingkat yang direncanakan memiliki fungsi penting sebagai fasilitas pendidikan. Oleh karena itu, perancangan strukturnya harus memenuhi berbagai aspek seperti keamanan, kenyamanan, efisiensi, dan estetika. Rangka portal sebagai sistem struktur utama akan memegang peranan krusial dalam mendistribusikan beban dan menjaga stabilitas bangunan secara keseluruhan. Hasil dari preliminary design ini akan menjadi dasar untuk tahap perancangan detail selanjutnya. Pada penelitian ini digunakan software SAP2000 untuk memodelkan struktur bangunan yang diberi beban sesuai dengan peraturan SNI 2847-2019. Melalui proses ini, diharapkan dapat diperoleh solusi desain yang optimal, aman, dan sesuai dengan kebutuhan bangunan sekolah 2 tingkat yang direncanakan.
creator: Naufaldy Febryant Hilmansyah
creator: Muhamad Dzaki Febly Sudarsa
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 1
ending page: 27
doi: 10.31869/rtj.v9i1.6254

ANALISIS PENGHEMATAN DAN KONSERVASI ENERGI DI GEDUNG PERKANTORAN
type: item
description: The use of electrical energy in buildings has the potential to cause wastage of electrical energy, such as lighting, lighting, electronic devices and equipment installed that does not comply with standards. This research aims to obtain building standardization by calculating the Energy Consumption Intensity (IKE) value, making savings on air and lighting systems, and calculating energy consumption costs. The savings that can be made in this research are savings by implementing energy conservation through technological improvement methods in lighting and air conditioning systems. On the procedures for implementing other savings by implementing energy saving behavior. Then calculate consumption costs using the financial assessment stages. Based on an audit of electrical energy in this office building, the IKE value obtained was 78.08 kWh per year. This value is considered efficient for office buildings. However, several conditions were found that caused energy waste, such as the use of fluorescent fluorescent lamps in the lighting system. The use of these lamps tends to be wasteful so they need to be replaced with LED TL lamps. The savings obtained on lighting are 55%. And in the cooling system the AC capacity does not match the area per floor. The savings obtained from air conditioning are 15% with the resulting kWh value being 511.2 kWh from the previous savings of 677.7 kWh. Keywords: Electrical Energy Audit, Energy Conservation, Energy Consumption Intensity
creator: M. Fariz Dwi Asmi
creator: Zulfatri Aini
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 28
ending page: 43
doi: 10.31869/rtj.v9i1.6260

PENINGKATAN RASIO C/N LIMBAH CAIR TAHU DENGAN PENCAMPURAN SEKAM PADI UNTUK MENDAPATKAN POTENSI BIOGAS DAN ENERGI LISTRIK
type: item
description: Tofu liquid waste has a C/N ratio of 4.68 which is below the standard for biogas formation, namely 20-30. Increasing the C/N ratio of tofu liquid waste was carried out by adding raw materials that had a high C/N ratio, namely rice husks of 145.35. The amount of raw material mixed with tofu liquid waste and rice husks is determined by varying the C/N ratio according to standards with variations of 20, 22, 24, 26, 28, and 30 to get the best potential for biogas and electrical energy using the Anaerobic Fermentation method and software assistance. Superpro. The amount of rice husk raw material with a C/N ratio of 20, 22, 24, 26, 28, and 30 respectively 97.77 kg, 112.33 kg, 127.37 kg, 142.90 kg, 158.98 kg, and 175.60 kg. The best potential for biogas and electrical energy is at a C/N ratio of 30 with a raw material amount of 800 liters of tofu liquid waste and 175.60 kg of rice husk waste, amounting to 327.56 m3 and 1,539.53 kWh. It can be concluded that the raw material of rice husks can increase the C/N ratio of tofu liquid waste which is still below the standard for biogas formation, so that mixing tofu liquid waste with rice husks can increase the potential for biogas and electrical energy. Keywords: C/N Ratio, Tofu Liquid Waste, Rrice Husk, Biogas
creator: Muhammad Suryo Aditya
creator: Marhama Jelita
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 44
ending page: 55
doi: 10.31869/rtj.v9i1.6261

THE EFFECT OF SEASHELL WASTE AS FINE AGGREGATE SUBSTITUTION ON THE COMPRESSIVE STRENGTH OF ECO-FRIENDLY CONCRETE
type: item
description: The widespread use of concrete in the construction industry contributes significantly to environmental degradation, primarily through CO₂ emissions from cement production and natural resource depletion for aggregate sourcing. This study investigates the feasibility of using seashell waste as a partial replacement for fine aggregate in concrete, aiming to maintain structural performance while promoting sustainability. A control concrete mix and an innovative mix incorporating seashell waste were prepared, with compressive strength tests conducted at 28 days. The results show that the seashell concrete achieved a compressive strength of 35.09 MPa, slightly surpassing the control concrete's 35 MPa. This minor increase is attributed to the calcium carbonate content of seashells, which contributes to a stable cementitious matrix similar to that of limestone. The findings suggest that seashell waste, abundant in coastal regions, can be effectively utilized as an eco-friendly alternative in concrete production without compromising structural integrity. By partially substituting fine aggregates with seashells, this study highlights a potential solution for reducing reliance on natural sand while supporting marine waste management. This research provides a basis for future studies on optimizing seashell content in concrete and exploring its durability under varying environmental conditions, contributing to sustainable construction practices.
creator: Rahma Nindya Ayu Hapsari
creator: Indra Agung Hermawan
creator: Faudi Rahmat Riyadi
creator: Neriska Aurenia
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 56
ending page: 61
doi: 10.31869/rtj.v9i1.6268

FAKTOR PENGHAMBAT SISTEM MANAJEMEN KESELAMATAN KONSTRUKSI PADA PROYEK JALAN PELABUHAN TELUK TAPANG
type: item
description: The construction industry in Indonesia is experiencing rapid growth, yet the improvement in construction project management to minimize construction accidents is not commensurate with the expansion. According to data from the Social Security Administration for Manpower in Sumatra and Riau, there were 31,801 workplace accidents in 2021, with 216 cases involving construction workers, predominantly occurring at job sites. This is largely attributed to the frequent neglect of implementing the Construction Safety Management System (SMKK) on construction projects, which inherently pose high risks and accident rates. This research aims to identify the inhibiting factors in the implementation of SMKK during the construction phase, based on The Ministry of Public Works and Housing Regulation No. 10 of 2021. A qualitative descriptive method was employed, involving interviews with 11 key informants including Commitment Making Official of planner, Commitment Making Official of execution, Commitment Making Official of supervisor, Consultant of Planner, Contractor of construction, Consultant of Inspection and tender committee. The study identified four main barriers: inadequate awareness among workers regarding safety priorities, infrequent presence of HSE personnel from consulting supervisors until project completion, lax oversight by Top Management, and ineffective outcomes following internal audits, failing to achieve expected improvements. Keywords: Inhibiting Factor, Construction Accident, Construction Project, Inhibiting Factor, The Ministry of Public Works and Housing Regulation No. 10 Year 2021, SMKK
creator: Revi Yuliana
creator: Nafryzal Carlo
creator: Dwifitra Y. Jumas
creator: Lusi Utama
creator: Eva Rita
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 62
ending page: 70
doi: 10.31869/rtj.v9i1.6311

RANCANG BANGUN ALAT PEMISAH SAMPAH PADA PERUSAHAAN INDUSTRI
type: item
description: Population growth in Sidoarjo Regency accompanied by increasing industrial waste has a negative impact on environmental sustainability and provides challenges related to innovation regarding this problem. Waste separator equipment in industrial companies is one of the relevant innovations to make it easier to process the waste produced. This research aims to create a waste separation device based on Internet of Things (IoT) technology that can help people sort waste automatically. This system uses a combination of STM32F407 and ESP8266 microcontrollers with three main sensors: inductive proximity, capacitive proximity, and infrared. This tool is designed to help identify types of metal, non-metal, organic and inorganic waste by automatically moving the waste to the appropriate container with the help of a servo motor. Notifications in the form of trash bin capacity status are also sent via the Telegram application on smartphones. Test results show that this tool is successful in sorting waste with a high level of accuracy, although notification speed depends on the stability of the internet connection. This research provides innovative solutions to waste management challenges and is expected to encourage the application of the 3R principles (reuse, reduce, recycle) in society. Keywords: IoT, Waste Sorting, Sensors, Automation, Waste Management
creator: Mochammad Fatkul Ihza
creator: Izza Anshory
creator: Shazana Dhiya Ayuni
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 71
ending page: 79
doi: 10.31869/rtj.v9i1.6379

PERANCANGAN SISTEM PENGEREMAN DENGAN TEKNOLOGI MEDAN ELEKTROMAGNETIK PADA KENDARAAN
type: item
description: The braking system is one of the main components in a vehicle that plays an important role in driving safety. This research aims to design and develop an electromagnetic field-based brake system as an alternative to conventional brake systems. The system utilises the magnetic field generated by the solenoid to create braking force through the principle of electromagnetic induction. Simulation results show that the system is able to generate optimal braking force with faster response and higher energy efficiency. Prototypes tested on small-scale vehicles show improved braking performance with reduced braking distance compared to conventional brake systems. In addition, the system successfully reduced mechanical component wear and demonstrated good reliability under various conditions, including wet road surfaces. However, the research also found challenges in the form of relatively high energy consumption and the need for more heat-resistant conductive materials. In conclusion, electromagnetic brake systems have great potential to improve the safety, efficiency and sustainability of transport in the future. Recommendations for further research include optimising energy consumption, developing new materials, and testing on commercial-scale vehicles to ensure feasibility of implementation Keywords: Electromagnetic, Braking, Vehicle, Magnetic Field, Conventional Braking
creator: Abdul Basid
creator: Arief Wisaksono
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 80
ending page: 88
doi: 10.31869/rtj.v9i1.6439

FAKTOR DOMINAN PENGHAMBAT PENGELOLAAN IPAL KOMUNAL DI KOTA SOLOK
type: item
description: Banyaknya kerusakan bangunan IPAL sepeti pecahnya pipa saluran mengakibatkan IPAL tidak berfungsi sebagaimana mestinya. Dampak kerusakan tersebut diantaranya polusi lingkungan. Tujuan penelitian ini untuk mengetahui faktor yang mempengaruhikeberlanjutan pengelolaan IPAL Komunal di Kota Solok. Metode penelitian kuantitatif dengan responden stakeholders yang berkaitan dengan IPAL. Jumlah responden penelitian ini adalah 84 orang. Hasil penelitian ditemukan 2 faktor yang mempengaruhi keberlanjutan IPAL Komunal yang terdiri dari 11 variabel. 5 variabel paling dominan yaitu Kondisi fisik sarana dan prasarana sistem penyaluran hanya sebagian yang berfungsi, Kualitas effluent berbau menyengat, merusak estetika dan menganggu ekosistem didekatnya , Kondisi fisik tidak lengkap dan tidak berfungsi, Layout tidak sesuai dengan perencanaan dan tanpa penjelasan dan Lokasi IPAL terlalu dekat dengan rumah warga, dimana tidak terjangkau dengan truk penyedot tinja.
creator: Andi Dessanova
creator: Nasfryzal Carlo
creator: Rini Mulyani
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 89
ending page: 96
doi: 10.31869/rtj.v9i1.6550

IDENTIFIKASI DAN PERBANDINGAN FAKTOR KETERLAMBATAN DUA PROYEK JALAN DI KABUPATEN SOLOK
type: item
description: Pembangunan infrastruktur jalan memiliki peran penting dalam meningkatkan konektivitas antar wilayah dan mendorong pertumbuhan ekonomi. Namun, keterlambatan dalam proyek konstruksi jalan masih menjadi permasalahan yang sering terjadi dan berdampak pada biaya, kualitas proyek, serta mobilitas masyarakat. Penelitian ini bertujuan untuk mengidentifikasi dan membandingkan faktor-faktor penyebab keterlambatan proyek konstruksi jalan di Kabupaten Solok, dengan pendekatan komparatif antara dua proyek yang mengalami keterlambatan, yaitu pemeliharaan jalan Paninjauan - Kuncir dan pembangunan jalan Muaro–Garabak. Hasil penelitian menunjukkan bahwa 4 faktor utama yang sama penyebab keterlambatan adalah Komitmen pemilik terhadap proyek, Pemantauan dan pengendalian proyek oleh pemilik, Kemampuan pemilik dalam manajemen proyek, dan Pemahaman kontraktor tentang ruang lingkup pekerjaan.
creator: Alexsis Alexsis
creator: Nasfryzal Carlo
creator: Khadavi Khadavi
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 97
ending page: 102
doi: 10.31869/rtj.v9i1.6551

ANALISA IRIGASI PERSAWAHAN DI DAERAH ALIRAN SUNGAI SILUGONGGO
type: item
description: 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.
creator: Kukuh Wisnuaji Widiatmoko
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 103
ending page: 107
doi: 10.31869/rtj.v9i1.6558

PERSEPSI DAN PREFERENSI PENGHUNI PERMUKIMAN DI SEMPADAN SUNGAI INDRAGIRI DAN ASPIRASI MASYARAKAT KECAMATAN TEMBILAHAN HULU KABUPATEN INDRAGIRI HILIR, RIAU
type: item
description: Settlements on river borders are generally associated with the need for land for commercial and residential activities, resulting in changes in land function in various areas. The aim of this research is to determine and analyze the perceptions and preferences of residents in the Indragiri River border area and the aspirations of the people of Kec. Tembilahan Hulu as well as knowing and analyzing the influencing factors and dominant factors on the perceptions and preferences of residential residents. The sampling technique used was purposive sampling and the data collection method was by distributing questionnaires directly to respondents using a quantitative method approach. Data analysis uses the respondent achievement level (TCR) and confirmatory factor analysis approaches. The dominant factor for perception is government regulations with a cumulative factor value of 36.44% and the dominant factor in the preferences of residents of settlements along the river is personal interests with a cumulative value of 75.88%. The community aspirations conveyed by several communities that live outside the river border area are that settlements on the river border must receive special attention from the government and have regulations that are right on target and the government can pay attention to their livelihood factors which are related to the community's own economy. Keywords: Settlements, rivers, riverbanks, perceptions, preferences
creator: Siti Agre Esa
creator: Denny Helard
creator: Rizki Aziz
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 108
ending page: 115
doi: 10.31869/rtj.v9i1.6738

RANCANG BANGUN SISTEM INFORMASI PENYEWAAN ALAT DAN DEKORASI PESTA BERBASIS WEBSITE (STUDI KASUS: PERSADADITA DECORATION)
type: item
description: This study aims to design and develop a web-based information system for equipment and event decoration rental services at Persadadita Decoration, a community-based business managed by local youth. Prior to the development of the system, the business operated manually, with inefficient data recording, service delays, and difficulties in managing customer and transaction information. To address these issues, the system was developed using the Waterfall method, which includes five stages: requirements analysis, system design, implementation, testing, and deployment. The Laravel framework was used as the foundation for system development, with MySQL serving as the database management system for storing and organizing data. The system was evaluated using two methods, including Black Box Testing to verify functional completeness and the System Usability Scale (SUS) to assess user satisfaction. The test results showed that all system features worked as intended, and the SUS evaluation involving 30 respondents yielded an average score of 82.5, which falls into the “Excellent” category. The system includes key features such as role-based login, decoration package management, booking approval, and integrated contact functionality. Overall, the developed system successfully improves service efficiency, accuracy in data management, and provides user s with a convenient way to access information and make reservations online.
creator: Ikhsan Sendi Putra
creator: Bana Handaga
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 116
ending page: 131
doi: 10.31869/rtj.v9i1.6966

RANCANG BANGUN SISTEM INFORMASI PERSEDIAAN STOK BARANG BERBASIS WEBSITE (STUDI KASUS: PT. PERDANA SAKTI INDONESIA)
type: item
description: In the contemporary age of digital transformation, where the necessity for efficiency and precision is critical, numerous firms encounter substantial challenges in properly managing their inventory systems, particularly in the context of rising product demand and operational intricacy. PT. Perdana Sakti Indonesia faces significant challenges due to its reliance on manual data processing methods, resulting in data entry errors, delays in stock information updates, and protracted calculation processes that impede productivity and responsiveness. The deficiencies in inventory management jeopardize financial stability and reduce consumer happiness, particularly when products are out of stock or delivery schedules are disrupted. This project seeks to design and create a complete web-based inventory information system utilizing the Waterfall methodology as a systematic software development framework. The system is built with Laravel as the primary framework, PHP for backend development, MySQL as the database engine, and HTML/CSS for designing a user-friendly interface. The use of automation and real-time monitoring is anticipated to markedly boost data accuracy, minimize human errors, optimize stock management, and improve overall operational efficiency. The use of this system is anticipated to enhance PT. Perdana Sakti Indonesia's inventory management and service quality.
creator: Sannia Putri Ariansyah
creator: Helmi Imaduddin
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 132
ending page: 147
doi: 10.31869/rtj.v9i1.6967

RANCANG BANGUN SISTEM INFORMASI PENDAFTARAN EKSTRAKURIKULER BERBASIS WEBSITE (STUDI KASUS: SDN 06 NGRINGO)
type: item
description: Extracurricular activities are essential for cultivating pupils' potential in primary education. SDN 06 Ngringo is dedicated to providing a range of extracurricular programs to develop students' skills, interests, and talents. The existing manual registration method results in inefficiencies, data management challenges, restricted access to information, and diminished openness. This study intends to build and implement a web-based system for extracurricular registration information at SDN 06 Ngringo. The employed methodology is the Waterfall model, encompassing requirement analysis, design, coding, testing, and maintenance. The system is constructed utilizing HTML, PHP, Bootstrap, the Laravel framework, and MySQL as the database. This technology is anticipated to streamline and expedite the registration process, enhancing the efficiency and efficacy of extracurricular activity management. This research is expected to positively enhance students' learning experiences and facilitate the optimal development of their potential at SDN 06 Ngringo.
creator: Risyma Muti' Styandri Anni'mah
creator: Helmi Imaduddin
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 148
ending page: 165
doi: 10.31869/rtj.v9i1.6970

IDENTIFIKASI POTENSI BAHAYA BERDASARKAN IMPLEMENTASI SELF EXPLAINING ROAD DAN FORGIVING ROAD DENGAN METODE HIRA
type: item
description: Jalan Moga - Guci merupakan akses penting menuju destinasi wisata di Kabupaten Tegal, namun karena kondisi geometrik jalan yang sulit dan minimnya sarana dan prasarana keselamatan, maka jalan tersebut menjadi rawan terjadinya kecelakaan. Tujuan dari penelitian ini untuk menemukan kemungkinan risiko berdasarkan penerapan konsep Self-Explaining Road (SER) dan Forgiving Road (FR), dengan metode Hazard Identification and Risk Assessment (HIRA). Pelaksanaan penelitian ini melalui observasi lapangan sepanjang 3,016 km dan menganalisis 12 titik defisiensi jalan. Hasil evaluasi menunjukkan bahwa 66% dari potensi bahaya berada dalam kategori risiko moderate, 17% high, dan 17% low. Mayoritas bahaya memiliki tingkat kemungkinan kejadian unlikely namun berdampak moderate hingga major jika terjadi kecelakaan. Temuan risiko tertinggi berada di titik STA 1+800 dan 2+400 akibat kombinasi kerusakan perkerasan dan visibilitas rendah. Studi ini membuktikan bahwa penerapan prinsip Self-Explaining Road (SER) dan Forgiving Road (FR) dalam desain jalan dapat membantu meminimalisir risiko kecelakaan. Diperlukan intervensi berbasis rekayasa lalu lintas untuk meningkatkan keselamatan di koridor pada jalur tersebut.
creator: Arga Satria Panuntun
creator: Baskoro Baskoro
creator: Raynaldi Saputra Masuang
creator: Taupiqqurrohman Taupiqqurrohman
creator: Suprapto Hadi
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 166
ending page: 178
doi: 10.31869/rtj.v9i1.6985

PENGARUH ANALISA LAJU KOROSI DAN KEKERASAN TITANIUM DALAM LARUTAN SBF KOKUBO UNTUK APLIKASI ORTODONTIK
type: item
description: Titanium dan paduannya lebih banyak dipilih untuk material implan gigi, khususnya pemasangan kawat gigi, karena mempunyai sifat tahan korosi dan sifat mekanik yang jauh lebih baik dibanding baja tahan karat. Namun demikian, penggunaan titanium dan paduannya masih memiliki kekurangan. Ketahanan korosi titanium dapat berkurang di lingkungan asam (pH asam). Seperti diketahui, masyarakat Sumbar suka mengkonsumsi makanan yang mengandung zat asam (mengandung santan/lemak) seperti rendang, gulai, dan goreng-gorengan. Karena itu, perlu dilakukan penelitian untuk mengetahui laju korosi terhadap titanium dan paduannya di lingkungan asam. Ada 4 (empat) sampel titanium yang dipilih dalam pengujian ini. Yakni Ti-12 Cr, TNTZ-ST, Ti64 ELI (Extra Low Intertitial) dan Commercial Pure Titanium (CpTi). Empat spesimen ini diuji rendam (immersion test) dalam larutan Simulated Body Fluid (SBF) Kokubo (pH 5,0) dengan empat (4) variasi waktu (t); 1 minggu, 2 minggu, 3 minggu dan 4 minggu. Laju korosi dihitung dengan metode pengurangan berat (weight loss). Hasil pengujian didapatkan laju korosi tertinggi terjadi pada CPTi (0,0985 mm/y) pada waktu pengujian 4 minggu. Sementara laju korosi terendah terjadi pada Ti-12 Cr, 0,0515 mm/y. Untuk nilai kekerasan, CpTi memiliki kekerasan paling tinggi, 365 HVN (1 minggu). Sementara Ti-12 Cr memiliki kekerasan paling rendah, 130 HVN.
creator: Sanny Ardhy
creator: Islahuddin Islahuddin
creator: Muhammad Riza Ardiyanto
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 179
ending page: 185
doi: 10.31869/rtj.v9i1.7066

STUDI PERBAIKAN SALURAN SEKUNDER DAERAH KARANG AGUNG HILIR DI DESA SR AGUNG
type: item
description: The success of agriculture in tidal swamp areas significantly depends on the sustainability of irrigation infrastructure. SR Agung Village in Karang Agung Hilir, Banyuasin Regency, is a transmigration area suffering from the degradation of secondary irrigation channels due to sedimentation, embankment damage, and uncontrolled vegetation growth. This study aims to comprehensively describe the existing conditions of the secondary channel and evaluate the effectiveness of the rehabilitation efforts undertaken. The research employed a qualitative descriptive method with data collection through field observations, interviews with project stakeholders, documentation review, and active participation. The results revealed damage including embankment cracks up to 30 cm deep, sediment buildup reducing channel capacity by 60%, and aquatic vegetation covering 70–80% of the water surface. Rehabilitation strategies involved embankment reinforcement using geotextiles and crack injection, sediment dredging, and integrated vegetation control. Technical design followed the Detail Engineering Design (DED) approach, incorporating topographic, hydraulic, and geotechnical data. Rehabilitation outcomes showed a 40% increase in flow capacity and a 25% reduction in water loss. In conclusion, the rehabilitation significantly improved irrigation efficiency, agricultural productivity, and local food security. It is recommended to implement routine maintenance programs using digital technology and encourage community involvement through Water User Associations to ensure long-term infrastructure sustainability. Keywords: Secondary Irrigation, Irrigation Rehabilitation, Swamp Channel, SR Agung Village, Water Efficiency
creator: Aditya Wicaksono
creator: Firdaus Firdaus
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 186
ending page: 201
doi: 10.31869/rtj.v9i1.7313

IDENTIFIKASI PEMELIHARAAN SALURAN SEKUNDER (SPD) DAERAH IRIGASI RAWA DELTA AIR SUGIHAN KANAN DI DESA SUKA MULYA
type: item
description: Periodic maintenance of irrigation channels represents a fundamental aspect in maintaining agricultural system sustainability, particularly in swamp irrigation areas that possess unique characteristics and specific challenges. This study examines the implementation of periodic maintenance on secondary channels of Sugihan Kanan Swamp Irrigation Area in Suka Mulya Village, executed through the Public Works and Public Housing Department. The implementation methodology encompasses equipment and workforce mobilization, channel measurement using GPS technology and precision measuring instruments, and application of occupational safety and health management systems (SMK3). Comprehensive field survey stages include preparation, site inspection, and visual documentation to obtain accurate data on existing channel conditions. Main construction work comprising soil excavation and embankment refinement was executed using excavators with gradual techniques to achieve optimal channel profiles. Detailed drawing planning using AutoCAD software with 1:1000 scale ensures accurate visualization and facilitates field implementation. Implementation results demonstrate that systematic and structured approaches in irrigation channel maintenance can enhance water distribution effectiveness, prevent infrastructure damage, and support agricultural productivity. Effective coordination between technical teams and local communities serves as the key to sustainable maintenance project success. Keywords: periodic maintenance, irrigation channels, swamp irrigation area, occupational safety management system, agricultural productivity
creator: Ade Agung Santoso
creator: Firdaus Firdaus
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 202
ending page: 211
doi: 10.31869/rtj.v9i1.7314

EVALUASI DOKUMEN PERENCANAAN GEDUNG KANTOR BALAI PELAKSANA PEMILIHAN JASA KONSTRUSI (BP2JK) WILAYAH SUMATERA SELATAN
type: item
description: The evaluation of office building planning documents is a crucial step in ensuring the quality of construction project implementation. This study aims to evaluate the completeness and compliance of the planning documents for the Office Building of the Construction Services Procurement Unit (BP2JK) of South Sumatra Region, referring to the applicable technical standards and regulations. The research employs a qualitative descriptive method through document study and direct observation of planning components. The evaluation results indicate that most documents meet administrative and technical requirements, although some elements require improvements to ensure technical clarity and smooth project implementation. These findings highlight the importance of systematic planning document preparation as the foundation for the success of public construction projects. The study also recommends enhancing quality control mechanisms in the planning process and utilizing information technology to support document accuracy and transparency. Keywords: document evaluation, building planning, public construction, BP2JK, quality control
creator: Azzahra Dwi Lintang Sakina
creator: Firdaus Firdaus
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 212
ending page: 225
doi: 10.31869/rtj.v9i1.7315

EVALUASI DOKUMEN PERENCANAAN TEKNIS REHABILITASI GEDUNG KANTOR BALAI PRASARANA PERMUKIMAN WILAYAH (BPPW) SUMSEL DALAM BIDANG STRUKTUR DAN BAHAN SESUAI DAFTAR SIMAK SE DJCK 04 TAHUN 2022
type: item
description: The construction of government office buildings requires technical planning documents that comply with national standards. This study aims to evaluate the technical planning documents for the rehabilitation of the South Sumatra Settlement Infrastructure Agency (BPPW) Office Building, focusing on structural and material aspects based on Checklist SE DJCK 04 of 2022. A descriptive qualitative method was applied through document analysis and technical discussions. The evaluation covers legal compliance, building description, document completeness, normative references, material specifications, structural system, load analysis, structural calculation, and construction detailing. Results indicate that the planning documents generally meet technical standards, though some discrepancies were found, such as incomplete geological maps, absence of wind load analysis, and inconsistencies in material specifications across documents. In conclusion, the documents are deemed suitable as a project implementation guide, with recommended improvements in cartography, lateral load analysis, and cross-document harmonization. Suggestions are provided to enhance the integrity of technical documentation through normative updates and cross-validation to ensure optimal safety and construction quality. Keywords: Technical Evaluation, Building Structure, Material Specification, Checklist, Building Rehabilitation
creator: Yani Octa Piyanti
creator: Anggi Purnama Sari Dewi
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 226
ending page: 237
doi: 10.31869/rtj.v9i1.7316

IDENTIFIKASI METODE PEMELIHARAAN BERKALA PADA SALURAN SEKUNDER (SDU) DAERAH IRIGASI RAWA DELTA AIR SUGIHAN KANAN DI DESA TIRTA MULYA
type: item
description: Swamp land ecosystems have significant potential as productive agricultural areas, but face challenges of excessive water inundation during the rainy season and extreme drought during the dry season, which impacts the reduction of planting intensity. This research aims to comprehensively examine the periodic maintenance methods of the Main Distribution Channel (SDU) of the Sugihan Kanan Delta Water Swamp Irrigation Area in Tirta Mulya Village, Ogan Komering Ilir Regency, and identify types of damage and effective repair methodologies. The research method uses a qualitative descriptive approach through field observation, in-depth interviews with stakeholders, literature study, and documentation during the period from February to June 2025. The research results identified three main categories of damage: massive sedimentation, proliferation of wild vegetation, and deterioration of embankment structures that caused a reduction in channel capacity to 60-70% of design capacity. Implementation of periodic maintenance includes equipment mobilization, precision measurement, sediment dredging, vegetation cleaning, and embankment reconstruction with dimensions of 11 meters width, 2 meters depth, and 3 meters berm width. This research concludes that systematic periodic maintenance can restore optimal function of swamp irrigation channels and recommends implementation of sustainable sedimentation control programs and strengthening community participation in operational and maintenance of irrigation infrastructure to support regional food security. Keywords: Periodic Maintenance, Swamp Irrigation Channel, Sedimentation, Swamp Irrigation Area, Sugihan Kanan
creator: Mayang Sari
creator: Anggi Purnama Sari Dewi
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 238
ending page: 251
doi: 10.31869/rtj.v9i1.7317

PERSIAPAN PERANCANGAN SISTEM RAIN WATER HARVESTING (RWH) DI DESA BANYU URIP, KECAMATAN TANJUNG LAGO, KABUPATEN BANYUASIN SEBAGAI UPAYA PENYIMPANAN CADANGAN AIR BERSIH PADA MUSIM KEMARAU
type: item
description: This study discusses the implementation of a Rain Water Harvesting (RWH) system as a solution for providing clean water reserves in Banyu Urip Village, Tanjung Lago Subdistrict, Banyuasin Regency, particularly during the dry season. Banyu Urip Village faces a clean water crisis during the dry season due to the poor quality of peat water. This activity involved designing and implementing a simple household-based RWH system. As a result, the system was able to collect up to 600 liters of rainwater during a single heavy rainfall, which was then used by residents for daily needs. The program also raised community awareness of the importance of water conservation. Keywords: Rain Water Harvesting (RWH), Clean Water, Dry Season, Water Life Village, Water Conservation
creator: Egi Satria
creator: Anggi Purnama Sari Dewi
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 252
ending page: 257
doi: 10.31869/rtj.v9i1.7318

ASSESSING COMPLIANCE AND BARRIERS IN FUNCTIONAL FEASIBILITY CERTIFICATION OF PUBLIC BUILDINGS: CASE EVIDENCE FROM BANDA ACEH, INDONESIA
type: item
description: The Functional Feasibility Certificate (SLF) is a legal requirement in Indonesia to ensure that buildings meet safety, health, and usability standards before being occupied, especially for public and commercial facilities. This study investigates the low adoption of SLF in public buildings in Banda Aceh, a mid-sized urban center in Indonesia. A qualitative case study approach was applied, involving direct observation and semi-structured interviews at four purposively selected sites: the BSI Landmark Building, Dr. Zainoel Abidin Regional General Hospital (Polyclinic), Kyriad Muraya Hotel, and Suzuya Mall. Results showed that only one building, the BSI Landmark had a valid SLF certificate. The remaining three lacked critical components such as fire doors, smoke detectors, and evacuation plans, despite the presence of basic safety infrastructure. Thematic analysis revealed three dominant barriers to certification: procedural complexity, limited institutional capacity, and low awareness among building managers. These findings highlight the need for streamlined digital certification systems, improved municipal support, and targeted regulatory outreach. The study contributes to the literature on urban safety governance in Indonesia and offers practical insights for strengthening disaster risk resilience and building compliance frameworks in Indonesian cities. Keywords: Functional feasibility certificate, Public building safety, Building regulation
creator: Hafnidar Abdul Rani
creator: Tamalkhani Syammaun
creator: Firmansyah Rachman
creator: Jurisman Amin
creator: Andi Fahlevi
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-01
publication date: 2026-01-01
volume: 9
number: 1
starting page: 258
ending page: 271
doi: 10.31869/rtj.v9i1.7511

PEMANFAATAN SINYAL PUTARAN GENERATOR DARI DCS UNTUK PENGGANTIAN SPEED RELAY ELEKTRO MEKANIK PADA SISTEM EKSITASI GENERATOR HIDRO
type: item
description: The Maninjau Hydroelectric Power Plant (HEPP) faces technical challenges in its generator excitation system due to failures in the Type 13 electromechanical speed relay, a critical component in the excitation start-up sequence. This relay has not only lost accuracy but is also obsolete and difficult to procure in the market. Its malfunction poses the risk of excitation sequence failure, which may lead to damage in the Automatic Voltage Regulator (AVR), voltage meter disturbances, and even complete unit start-up failure. This study aims to replace the function of the electromechanical speed relay with a system utilizing generator rotational speed signals available through the Distributed Control System (DCS). The Root Cause Problem Solving (RCPS) method, field observation, and priority matrix analysis were employed to evaluate the most optimal replacement alternative. The results indicate that using a 24VDC relay based on signals from the Speed Sensor Gear (SSG) and digital signals from the DCS provides the best solution. The new system enables a more precise excitation process, easier installation, improved safety, as well as real-time monitoring and full integration with digital control systems. The implemented modification demonstrates that the excitation system becomes more reliable and efficient, effectively overcoming the previously frequent excitation sequence failures. Furthermore, the system is considered more economical and universal, while ensuring compatibility with future developments in digital-based power plant technology. Overall, this research makes a significant contribution to the modernization of hydroelectric control systems, in line with the sustainable and technology-driven development of national power infrastructure. Keywords: Speed Relay, DCS, Excitation System, Hydroelectric Power Plant, Generator Rotational Speed, Control Modernization
creator: Mustaqimul Hadi
creator: Fikri Wahyudi
creator: Herris Yamashika
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-15
publication date: 2026-01-15
volume: 9
number: 1
starting page: 272
ending page: 278
doi: 10.31869/rtj.v9i1.7621

PENINGKATAN SAVING KWH DAN PENEKANAN SUSUT NON-TEKNIS MELALUI OPTIMALISASI P2TL DI PT PLN (PERSERO) ULP MUARA TEBO
type: item
description: Electricity is an essential need in almost all human activities, making it a vital component of everyday life. However, in the process of distributing it to customers, there is often a difference between the energy delivered and the energy sold, known as energy loss or shrinkage. This shrinkage can be categorized into two types, namely technical and non-technical shrinkage. PT PLN (Persero) uses the Jogja formula to map and analyze these two types of shrinkage, allowing a percentage comparison between technical and non-technical shrinkage. The focus of this research is on efforts to overcome non-technical shrinkage, especially in Muara Tebo ULP. PT PLN (Persero) implements preventive measures, including public education on the efficient and safe use of electrical energy, as well as the routine implementation of the Electricity Usage Control (P2TL). The purpose of these measures is to reduce non-technical losses that occur in the use of electricity. The results of the P2TL implementation in ULP Muara Tebo showed an increase in average kWh generation from 193,193 kWh in the January to May period to 216,582 kWh in June. This increase contributed significantly to the reduction of total shrinkage by 2.51% in June. This research confirms that a structured enforcement and education strategy can effectively improve energy distribution efficiency and reduce non-technical losses, supporting the overall operations of PT PLN (Persero). Keywords: energy loss, non-technical loss, formula jogja, P2TL
creator: Mardini Hasanah
creator: Pipit Puspitasari
creator: Surya Ramadan
creator: Herris Yamashika
rights: ##submission.copyrightStatement## http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2026-01-15
publication date: 2026-01-15
volume: 9
number: 1
starting page: 279
ending page: 285
doi: 10.31869/rtj.v9i1.7622