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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur JMM (Jurnal Masyarakat Mandiri) Jurnal Aplikasi Teknik Sipil G-Tech : Jurnal Teknologi Terapan Jurnal Pembelajaran, Bimbingan, dan Pengelolaan Pendidikan Jurnal MIPA dan Pembelajarannya Jurnal Ekonomi, Bisnis dan Pendidikan (JEBP) Engagement: Jurnal Pengabdian Kepada Masyarakat
Dzul Fikri Muhammad
Universitas Negeri Malang, Indonesia
Religion Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Immunology & microbiology Materials Science & Nanotechnology Mathematics Social Sciences Other

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Effect of Initial Arch Rib Angle Variation and Arch Height on Structure Performance of Tied Steel Arch Bridge Dzulkarnain Muhammad Khazruya; Izatulillah Izatulillah; Faiz Razaan Nema; Dzul Fikri Muhammad
G-Tech: Jurnal Teknologi Terapan Vol 9 No 3 (2025): G-Tech, Vol. 9 No. 3 July 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i3.7423

Abstract

Efficient use of materials in the tied arch bridge can be reach by optimizing it. This article examined initial arch angle and the top height effects. The use of initial angle (20°, 25°, 30°) combined with different top arch height (0,5 – 0,6 meter) is based on rise-span ratio 1:8 – 1:6,67. 9 bridge models are produced from these variations. This study aimed to minimizing deflection and weight for optimizing structural performance, thus decrease steel use also CO₂ emissions for support Indonesia toward SDGs 2045. 3D model was analyzed using FEM (Finite Element Method) Software with a 250 kg mid-span load using the tributary method, which is simulating pedestrian weight transferred through the floor plate and tie chord. Analysis results showed that the arch initial angle and the top height affect the structural performance. With the best performance is showed by type 1.3 with 20° initial angle and top arch height (0,6).
Numerical Analysis of Arc Geometry Variations on Bending Stability in Tied-Arch Bridges Izatullilah Izatullilah; Dzulkarnain Muhammad Khayzura; Faiz Razaan Nema; Dzul Fikri Muhammad
G-Tech: Jurnal Teknologi Terapan Vol 9 No 4 (2025): G-Tech, Vol. 9 No. 4 October 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i4.8030

Abstract

Tied-arch bridges are bridges that have high structural efficiency, but are prone to bending instability. This study aims to analyse the relationship between arc geometry variations and the bending stability of tied-arch bridges using the Finite Element Method (FEM) based on SAP2000 software, employing both linear and non-linear approaches. The linear analysis results show that lateral arch deformation occurs, indicating the potential for global lateral instability of the arch. Meanwhile, the non-linear analysis, which considers the significant geometry effect (P-Δ), produces a bending capacity of 7.43-11.69 kN with a maximum deflection of -0.52 mm. Variations in the arch angle were found to affect the critical bending capacity without significantly impacting global deformation. These findings are expected to serve as a valuable reference for designers and structural engineers in determining optimal and efficient arch designs.
PENERAPAN MESIN PENGADUK PAKAN 100 KG DENGAN SISTEM SILANG UNTUK MENINGKATKAN EFISIENSI KERJA PETERNAK KAMBING Isnandar, Isnandar; Wahyuni, Wiwik; Muhammad, Dzul Fikri; Wijaya, Robby; Suryani, Leny; Febrianto, Indra
JMM (Jurnal Masyarakat Mandiri) Vol 9, No 5 (2025): Oktober
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v9i5.34481

Abstract

Abstrak: Pecampuran pakan yang masih manual dengan waktu yang lama dan hasil yang tidak homogen menjadi permasalahan dalam peternakan. Tujuan program ini adalah meningkatkan hard skill anggota peternak dalam mengoperasikan mesin pengaduk pakan berbasis ESP32 berkapasitas 100 kg sehingga dapat meningkatkan efektivitas pencampuran pakan dari kapasitas 20–30 kg manual menjadi 100 kg per siklus. Metode pelaksanaan menggunakan pendekatan participatory learning and action (PLA) dengan menggunakan 7 tahapan yaitu: (1) kajian dan analisis kebutuhan, (2) persiapan, (3) pembuatan teknologi, (4) sosialisasi dan edukasi, (5) pelatihan, (6) pendampingan dan evaluasi, dan (7) penutupan. Penerapan mesin ini dilakukan kepada 34 anggota kelompok ternak Sumber Mendho Nusantara di Desa Sumberpucung, Kabupaten Malang. Evaluasi menggunakan angket pre-test dan post-test dengan indikator adanya peningkatan hard skill mitra dalam mengoperasikan mesin. Hasil evaluasi menunjukkan peningkatan pemahaman secara keseluruhan sebesar dari 46,67% menjadi 88,08% dengan rincian sebagai berikut: aspek pengetahuan pakan meningkat 20,11%, aspek teknologi mesin dan produksi meningkat 54,57%, aspek pelatihan dan pendampingan meningkat 54,13%, serta aspek dampak dan keberlanjutan meningkat 36,68%. Pendekatan PLA terbukti efektif dalam meningkatkan hard skill mitra, khususnya dalam penguasaan teknologi.Abstract: Manual feed mixing, which takes a long time and results in non-homogeneous output, is a problem in animal husbandry. The program aimed to enhance the hard skills of farmer members in operating an ESP32-based feed mixer machine with a capacity of 100 kg, thereby improving feed mixing efficiency from a manual capacity of 20–30 kg to 100 kg per cycle. The implementation method uses the participatory learning and action (PLA) approach with 7 stages: (1) needs assessment and analysis, (2) preparation, (3) technology development, (4) socialization and education, (5) training, (6) mentoring and evaluation, and (7) closing. The machine was implemented among 34 members of the Sumber Mendho Nusantara livestock group in Sumberpucung Village, Malang Regency. Evaluation was conducted using pre-test and post-test questionnaires with the indicator of improved hard skills of partners in operating the machine. The evaluation results show an overall improvement in understanding from 46.67% to 88.08%, with the following breakdown: feed knowledge aspect increased by 20.11%, machine technology and production aspect increased by 54.57%, training and mentoring aspect increased by 54.13%, and impact and sustainability aspect increased by 36.68%. The PLA approach proved effective in improving partners' hard and soft skills, particularly in mastering technology, feed production management, and business sustainability awareness.
PERANCANGAN KISI-KISI EKSTERIOR KORIDOR SEKOLAH BERBASIS RANGKA BESI DAN ALUMINIUM COMPOSITE PANEL UNTUK PENINGKATAN KENYAMANAN LINGKUNGAN BELAJAR Muhammad, Dzul Fikri; Rifai, Ridwan Muhamad; Wulandari, Fadila Fitria; Abdulrahman, Muhammad
JMM (Jurnal Masyarakat Mandiri) Vol 10, No 1 (2026): Februari
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v10i1.36331

Abstract

Abstrak: Kegiatan pengabdian kepada masyarakat ini bertujuan merancang desain eksterior kisi-kisi pada koridor sekolah dasar mitra sebagai solusi terhadap permasalahan tampias hujan dan panas berlebih yang mengganggu kenyamanan aktivitas belajar. Koridor yang menjadi fokus kegiatan merupakan penghubung antara ruang kelas dan perpustakaan. Mitra kegiatan melibatkan pihak sekolah, khususnya guru dan pengelola sarana prasarana, yang berperan aktif dalam diskusi dan evaluasi. Solusi yang ditawarkan berupa desain kisi-kisi eksterior dengan rangka besi hollow dan penutup Aluminium Composite Panel (ACP) bermodul 1×1 meter berwarna putih dan abu-abu. Metode pelaksanaan meliputi observasi lapangan, diskusi partisipatif, serta perancangan desain konseptual dengan mempertimbangkan aspek fungsional, estetika, dan kondisi iklim setempat. Monitoring dan evaluasi dilakukan melalui observasi serta wawancara reflektif. Hasil evaluasi menunjukkan bahwa 90% responden menilai desain sesuai kebutuhan sekolah dan layak dijadikan acuan renovasi. Rancangan ini diharapkan mampu meningkatkan kenyamanan serta kualitas lingkungan belajar.Abstract: This community service activity aims to design an exterior grid for the corridor of the partner elementary school as a solution to the problems of rainwater leakage and excessive heat that interfere with the comfort of learning activities. The corridor that is the focus of the activity is a connector between classrooms and the library. Partners in the activity include the school, particularly teachers and facility managers, who play an active role in discussions and evaluations. The proposed solution is an exterior grille design with a hollow iron frame and 1×1 meter white and gray aluminum composite panel (ACP) coverings. The implementation method included field observations, participatory discussions, and conceptual design planning that took into account functional aspects, aesthetics, and local climate conditions. Monitoring and evaluation were carried out through observations and reflective interviews. The evaluation results showed that 90% of respondents considered the design to be in line with the school's needs and suitable as a reference for renovation. This design is expected to improve comfort and the quality of the learning environment.
Effect of Bottom Bracing Configuration on Mid-Span Deflection of Tied Steel Arch Bridge Neema, Faiz Razaan; Khazruya, Dzulkarnain Muhammad; Izatullilah, Izatullilah; Muhammad, Dzul Fikri
G-Tech: Jurnal Teknologi Terapan Vol 10 No 1 (2026): G-Tech, Vol. 10 No. 1 January 2026
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v10i1.8916

Abstract

Tied steel arch bridges are commonly used due to their structural efficiency and aesthetic value; however, excessive mid-span deflection remains a critical design issue. While previous studies indicate that bottom bracing can enhance stiffness, the optimization of bracing configurations at the mid-span has not been sufficiently investigated. This study evaluates the influence of different bottom bracing configurations on mid-span deflection in tie-beam steel arch bridges. Numerical analysis based on the finite element method was conducted using SAP2000 v.22 on four bridge models with identical geometry, loading conditions, and a total bottom bracing weight of 10 kg. The bridge span was 4 m with an allowable deflection limit of 5 mm. The results show that all configurations satisfy the deflection criteria, with the X-bracing configuration yielding the smallest mid-span deflection. These findings contribute to the understanding of optimal bottom bracing configurations in steel arch bridge design, supporting efficient structural performance in engineering applications.
Co-Authors Abdulrahman, Muhammad Agil Fitri Handayani Alviando Galih Syahdandi Anang Ansyori Andra Akmal Maulidani Anie Yulistyorini Aripriharta - Budi, Kevin Reznadya Setia Dian Ariestasi Dzulkarnain Muhammad Khayzura Dzulkarnain Muhammad Khazruya Edi Santoso Fadila Fitria Wulandari Faiz Razaan Nema Gading Chempakadewi Handayani, Agil Fitri Hasan Firdiansyah, Muhammad Indra Febrianto Isnandar Izatulillah Izatulillah Izatullilah Izatullilah Izatullilah, Izatullilah Khazruya, Dzulkarnain Muhammad Kristian, Matthew Hassel Kusuma, Kadek Adyatma Teja Mohammad Andyko Mohammad Musthofa Al Ansyorie Muhammad Abdul Rahman Muhammad Arif Hidayatullah Muhammad Aris Ichwanto Muhammad Hamza Neema, Faiz Razaan Ninda Lufita Sari Nindyawati Nindyawati Pasaribu, Aswin Ridwan Muhamad Rifai Roro Sulaksitaningrum Sugandi, Mahmud Suryani, Leny Suswanto, Budi Syahidah Fani Nastiti Wijaya, Robby Wiwik Wahyuni