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All Journal Journal of Degraded and Mining Lands Management Borneo Engineering: Jurnal Teknik Sipil Jurnal Abdimas Mandiri Andalasian International Journal of Applied Science, Engineering, and Technology
Usman, Fathoni
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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Impact of land use conservation of swampy lowland urban areas on people's awareness and perception Yusuf, Maulana; Damiri, Nurhayati; Saptawan, Ardiyan; Aslamiah, Nur; Usman, Fathoni; Affandi, Ahmad; Rahim, Supli E; Yunardy, Syafrul
Journal of Degraded and Mining Lands Management Vol. 12 No. 3 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.123.7483

Abstract

This study investigated how changes in land use impact people's knowledge and perceptions, notably the transformation of wetlands into residential and industrial sectors in urban low-lying areas. This transformation's accelerating urbanization is a worldwide phenomenon fueled by infrastructural growth and urban growth. This study was carried out using a mixed-methods approach that includes surveys, interviews, and spatial analysis. This research showed a complicated link between a change in land use and how people perceive it. First, turning low-lying swamps into cities frequently changes the hydrological dynamics, raising the risk of floods and other water-related risks. As a result, people who live in transformed areas tend to develop more conscious of these environmental dangers. However, this increased awareness may not always result in proactive mitigating actions due to resource shortages and poor urban planning. Second, socio-economic position and proximity to redeveloped regions affect how locals view urban growth. While some regard land use conversion adversely owing to habitat loss and potential health hazards related to pollution and sanitation difficulties, others see it as a chance for economic expansion and improved infrastructure. Lastly, minimizing the negative effects of land use shifts depends on efficient urban planning and community involvement. People's perceptions are more likely to be positive when they participate in decision-making processes and access information and resources, increasing engagement in sustainable urban development activities.
The Slippage of Bolts on Axial Compression Capacity of Equal Angle Section’s Bolt Connection Usman, Fathoni; Devi, Debby Sinta
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 5 No. 3 (2025): November 2025
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v5i3.267

Abstract

Steel angles play a vital role in energy infrastructure, especially in latticed transmission towers where they act as axial compression members. Their structural performance is strongly influenced by end restraints, bolt configurations, and slenderness ratios, which affect buckling behavior and compression strength. This study examines how the number and arrangement of bolts, along with slenderness variations, impact the displacement and stress response of steel angles under compression using nonlinear analysis and finite element modeling. The investigation highlights that different bolt patterns and slenderness ratios significantly alter the stability and load-bearing capacity of the members. Single-row bolt configurations tend to experience greater slippage compared to multi-row setups, indicating the importance of connection design in preventing premature failures. Overall, the findings emphasize the need for optimized bolt arrangements and slenderness control to enhance resistance to buckling and improve the overall efficiency and reliability of energy infrastructure systems under axial compression loads.
Pemberdayaan Masyarakat Desa Sritiga Banyuasin Melalui Inovasi Pembuatan Panel Atap Ramah Lingkungan dari Limbah Sabut Kelapa Sinta Devi, Debby; Usman, Fathoni; Afriyani, Fauzia; Utami, Meiry Putry; Andrean, Muhammad Addan
Jurnal Abdimas Mandiri Vol. 10 No. 1 (2026): On Progress
Publisher : UNIVERSITAS INDO GLOBAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36982/jam.v10i1.6253

Abstract

Kegiatan Pengabdian kepada Masyarakat ini dilaksanakan di Desa Sritiga, Kabupaten Banyuasin, Sumatera Selatan, dengan tujuan meningkatkan kapasitas masyarakat dalam memanfaatkan limbah sabut kelapa (cocopeat) menjadi panel atap berinsulasi ramah lingkungan. Desa Sritiga dipilih sebagai lokasi kegiatan karena memiliki potensi besar dalam produksi kelapa, sehingga limbah sabut kelapa tersedia melimpah namun belum dimanfaatkan secara optimal. Program ini dilakukan melalui serangkaian pelatihan teknis, pendampingan intensif, serta demonstrasi teknologi sederhana pengolahan sabut kelapa menjadi panel atap. Metode yang digunakan adalah pendekatan partisipatif dengan melibatkan Kelompok Tani Karya Usaha A, ibu rumah tangga, serta pemuda desa. Pendekatan ini bertujuan agar masyarakat tidak hanya menjadi penerima manfaat, tetapi juga berperan aktif dalam setiap tahapan kegiatan, mulai dari pengumpulan bahan baku, proses produksi, hingga pemasaran produk. Hasil kegiatan menunjukkan adanya peningkatan keterampilan mitra dalam memproduksi panel atap berbahan cocopeat yang memiliki sifat insulasi termal, daya tahan, serta nilai ekonomi yang dapat mendukung peningkatan pendapatan keluarga. Selain itu, kegiatan ini juga memberikan dampak sosial berupa meningkatnya kesadaran masyarakat terhadap pentingnya pengelolaan limbah secara berkelanjutan. Kesimpulan menunjukkan bahwa pemanfaatan serat kelapa berbasis masyarakat dapat menjadi solusi berkelanjutan dalam mengurangi limbah pertanian sekaligus meningkatkan perekonomian lokal serta membuka peluang pengembangan usaha kreatif berbasis sumber daya alam desa.
Analysis of the Effect of Silica Fume as an Additive on the Workability and Compressive Strength of Porous Concrete Tri Cahya, Yayan; Usman, Fathoni; Sinta Devi, Debby
Borneo Engineering: Jurnal Teknik Sipil Volume 10 Nomor 1 Tahun 2026
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/be.v10i1.609

Abstract

The use of porous concrete is a crucial strategy for mitigating surface water runoff in urban areas. However, low compressive strength often poses a major challenge in its application. This study aims to analyze the effect of adding silica fume on the mechanical and hydraulic properties of porous concrete. The research was conducted experimentally in a laboratory setting, following ACI 522R-10 standards for mix proportions and ASTM C39 for compressive strength testing. The silica fume content was varied at 0%, 3%, 5%, and 7% of the total cement weight, with a total of 24 test specimens, each a 10x20 cm cylinder. Test procedures included a slump test for workability, a permeability test, and a 28-day compressive strength test. The results showed that increasing the silica fume content significantly reduced the slump to 0 cm at a 7% increase, indicating that the mixture became stiffer. As the micro-structural density increased, the permeability coefficient decreased from 0.0288 cm/s to 0.0082 cm/s. Although drainage capacity decreased, the compressive strength of the concrete increased significantly by 69.6%, from 6.58 MPa to 11.16 MPa at the 7% content. The novelty of this study lies in identifying the optimal silica fume content to achieve a structural compressive strength above 10 MPa while preserving drainage functionality. These findings confirm that silica fume effectively enhances the mechanical performance and durability of porous concrete, making it highly suitable for use in eco-friendly infrastructure, such as parking lots and neighborhood roads, that require a balance between structural strength and water infiltration efficiency.©The author(s). Published by BEJTSThis is an open-access article distributed under the terms and conditions of the Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0).Introduction: Pervious concrete is a construction material designed with a high level of porosity, allowing water to flow through its internal cavities. This material is widely used in parking areas, pedestrian paths, and sustainable drainage systems due to its ability to reduce surface runoff and increase groundwater  
Co-Authors Adiguna Adiguna, Adiguna Afriyani, Fauzia Ahmad Affandi Amiwarti, Amiwarti Andrean, Muhammad Addan Ardiyan Saptawan Aslamiah, Nur Devi, Debby Sinta Herri Purwanto Maulana Yusuf Muhammad Firdaus Nurhayati Damiri Rahim, Supli E Reffanda Kurniawan, Reffanda Setiobudi, Agus Sinta Devi, Debby Syafrul Yunardy Syahril Alzahri, Syahril Tri Cahya, Yayan Utami, Meiry Putry