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All Journal Teknosains: Media Informasi Sains dan Teknologi Nature: National Academic Journal of Architecture JMTS: Jurnal Mitra Teknik Sipil PINISI Discretion Review Journal of the Civil Engineering Forum Seminar Nasional Pengabdian Kepada Masyarakat Vokatek : Jurnal Pengabdian Masyarakat International Journal of Environment, Engineering, and Education Jurnal Sipakatau
Helmy, Ahnaf Riyandirga Ariyansyah Putra
Universitas Negeri Makassar
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Physics Social Sciences Other

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Evaluasi kepatuhan kendaraan terhadap peraturan overdimension overloading (Studi kasus Unit Pelaksana Penimbangan Kendaraan Bermotor Tana Batue) Hasrul, Muhammad Reza; Riyandirga, Ahnaf; Rahman, Mohammad Junaedy; Fadillah, Noor
Teknosains Vol 18 No 3 (2024): September-Desember
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/teknosains.v18i3.48462

Abstract

Overdimension Overloading (ODOL) merupakan masalah serius di Indonesia yang berdampak signifikan pada infrastruktur jalan dan keselamatan lalu lintas. Penelitian ini bertujuan untuk mengevaluasi kepatuhan kendaraan terhadap peraturan berat di Unit Pelaksana Penimbangan Kendaraan Bermotor (UPPKB) TanaBatue, Kabupaten Bone. Data penimbangan harian dari 1 hingga 12 April 2023 mencakup jumlah kendaraan yang ditimbang setiap hari, klasifikasi pelanggaran berat, dan informasi kendaraan. Metode deskriptif kuantitatif digunakan untuk menganalisis data tersebut. Hasil menunjukkan bahwa rata-rata 123 kendaraan ditimbang setiap hari, dengan 66% kendaraan melebihi batas berat yang diizinkan tetapi masih memenuhi syarat, 11% tidak memenuhi syarat, dan 22% sesuai dengan berat yang diizinkan. Pelanggaran ODOL memberikan tekanan besar pada infrastruktur jalan, meningkatkan risiko kerusakan dan biaya pemeliharaan. Rute distribusi utama antara Makassar dan Bone menunjukkan aktivitas ekonomi yang tinggi, terutama dalam sektor pertanian. Penelitian ini menyarankan peningkatan penegakan hukum dan edukasi kepada pengemudi tentang dampak negatif pelanggaran ODOL serta implementasi kebijakan yang lebih ketat untuk meningkatkan kepatuhan terhadap peraturan berat kendaraan.
Optimalisasi Ventilasi Udara pada Gedung Futsal Komersial di Makassar Ismajaya, Muh. Aryanugraha; Tenriola, Raeny; Asnur, Moeh. Kay Muddin; Helmy, Ahnaf Riyandirga Ariyansyah Putra
Nature : National Academic Journal of Architecture Vol 12 No 1 (2025): June
Publisher : Department of Architecture, Faculty of Science and Technology, Alauddin State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/nature.v12i1a3

Abstract

Indoor air quality plays a vital role in ensuring comfort and maintaining the health of users in enclosed sports facilities, such as indoor futsal courts. Proper air circulation significantly contributes to thermal comfort and reduces health risks associated with inadequate ventilation. However, this aspect is often neglected in the design of such buildings. This study aims to: (1) analyze the performance of air circulation in indoor futsal buildings, (2) assess indoor air quality, and (3) develop a design model that optimizes airflow using computational simulation. The research methodology included field surveys and direct measurements of building and ventilation opening dimensions, air velocity, temperature, and concentrations of CO and CO₂. Simulations were performed by adding new inlets and outlets equal in area to the existing ones but repositioned strategically—additional inlets were placed at 6.70 meters above the floor, and outlets were located 1 meter above the floor. The third simulation scenario showed a significant improvement in airflow speed at the central part of the building, ranging between 0.7 m/s and 1.5 m/s. By increasing the total inlet area to 271.32 m² and the total outlet area to 171.6 m², with incoming airflow speeds of 2.7 m/s, a more effective and evenly distributed indoor air circulation was achieved. These findings confirm that modifying the placement and sizing of natural ventilation elements can substantially enhance airflow performance in indoor futsal facilities. The proposed design model contributes meaningfully to architectural practices aimed at creating healthier sports facilities that effectively respond to passive ventilation requirements and may serve as a reference for the design of similar buildings in tropical climate regions.
Sustainable Lightweight Concrete Using Candlenut Shell as Coarse Aggregate: The Impact of Water-Cement Ratios on Strength and Density Hasrul, Muhammad Reza; Rahman, Mohammad Junaedy; Helmy, Ahnaf Riyandirga Ariyansyah Putra; Natsir, Taufiq; Asrib, Ahmad Rifqi
Journal of the Civil Engineering Forum Vol. 11 No. 3 (September 2025)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.18175

Abstract

This study explores the promising potential of Candlenut Shell Aggregate (CSA) as a sustainable and innovative alternative for lightweight concrete production. Derived from Aleurites moluccanus, CSA is an agricultural by-product characterized by its low density, moderate abrasion resistance, and high water absorption make it suitable for non-structural applications like wall panels and flooring. However, integrating CSA into concrete mixes requires careful management of the water-cement (w/c) ratio which significantly affects compressive strength, density, and workability. Concrete mixes were prepared using the absolute volume method, with w/c ratios ranging from 0.65 to 0.30, to identify the optimal balance. The absolute volume principle was applied for all mix designs. Our results indicate that an optimal w/c ratio of 0.55 yields the most favorable balance, achieving the highest compressive strength of 14.3 MPa and a maximum density of approximately 1850 kg/m3. This specific ratio strikes an ideal equilibrium between adequate cement hydration and effective void minimization within the concrete matrix. Conversely, higher w/c ratios lead to increased porosity, diminishing both strength and density, while lower ratios impair workability, hindering compaction and hydration, ultimately degrading performance. These findings resonate strongly with existing prior research, further emphasizing the crucial need for pre-treatment of CSA, such as soaking or the strategic incorporation of admixtures, to effectively mitigate its inherent high absorption and enhance overall mix performance. In conclusion, this study robustly confirms the feasibility of utilizing CSA as a lightweight aggregate. This represents a significant step towards developing an eco-friendly solution that not only contributes to global sustainability goals by repurposing agricultural waste but also actively reduces reliance on conventional, resource-intensive aggregates. Future research should explore the long-term durability of CSA-based concrete and investigate advanced admixtures to further enhance its properties for broader applications.
Assessment of Accessibility for People with Disabilities to BRT Trans Mamminasata in Makassar City Helmy, Ahnaf Riyandirga Ariyansyah Putra; Aska, Aulya Milatul
PINISI Discretion Review Volume 7, Issue 1, September 2023
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/pdr.v7i1.53875

Abstract

Trans Mamminasata BRT service delivery in the city of Makassar is still not able to provide a good service for people with disabilities. This can be seen in the existing condition of the existing BRT shelter. Therefore, this study aimed to evaluate the accessibility available on Trans Mamminasata BRT services to persons with disabilities. The research method used in this research is descriptive qualitative research method that aims to avoid the important details that are neglected due to quantitative methods are often the details are generalized into numbers and causing the existing information becomes neglected. Based on observations that have been made, found many irregularities in Mamminasata Trans Cosmos BRT service standards established in Indonesia. Some of the most common problems are the discrepancy of the size of the stop device against the prevailing standards, the unavailability of the special room for wheelchair users, the poor pedestrian conditions around the BRT shelter, the lack of available service information, and the presence of the eliminated bus facility. Based on this, it can be concluded that the condition of BRT stop Trans Mamminasata still not friendly to persons with disabilities in the city of Makassar.
Co-Authors Ahmad Rifqi Asrib Ahmad Wahidayat Ahsan, Muhammad Asis Nojeng Aska, Aulya Milatul Baharuddin, Akmal Chatarina Umbul Wahyuni Cheng, Aw Yoke Della Fadhilatunisa Dewi Fatmarani Surianto Dwi Wahyuni Aprianti Furqan Ali Yusuf Husnirrahman, Husnirrahman Iriandy M. Miftach Fakhri Moeh. Kay Muddin Asnur Mohammad Junaedy Rahman, Mohammad Junaedy Muh. Aryanugraha Ismajaya Natsir, Taufiq Noor Fadilah Romadhani Ridwan Sahril Nurfadhilah, Ulfaizah Sutarsi Suhaeb Tenriola, Raeny Ulfaizah Ulfaizah, Ulfaizah WAHYUDI