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All Journal JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Teknisia JOIV : International Journal on Informatics Visualization Jurnal Qua Teknika KURVATEK Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC) G-Tech : Jurnal Teknologi Terapan DEVICE Jurnal Penelitian Inovatif Indonesian Community Journal Aptekmas : Jurnal Pengabdian Kepada Masyarakat JITU (Jurnal Ilmiah Teknik Unida) International Journal of Hydrological and Environmental for Sustainability Journal of Community Service JOMPA ABDI: Jurnal Pengabdian Masyarakat Jurnal Ekonomi dan Bisnis STORAGE: Jurnal Ilmiah Teknik dan Ilmu Komputer Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Sewagati Jurnal Pengabdian Masyarakat Bangsa GEMBIRA (Pengabdian Kepada Masyarakat) Masyarakat: Jurnal Pengabdian
Sely Novita Sari
Institut Teknologi Nasional Yogyakarta
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Quantitative Study on Iron Reinforcement Waste Utilization for Material Efficiency in Boarding House Structures in Bantul Rizal Maulana; Sely Novita Sari
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.v9i4.8083

Abstract

The construction sector is one of the largest consumers of material resources, with reinforcement bars (rebar) contributing significantly to project costs. However, standard cutting practices often generate leftover steel, typically regarded as waste, despite its potential for reuse. This study aims to evaluate the efficiency of reusing rebar waste in the structural components columns, beams, and slabs of a two-story boarding house project in Bantul, Indonesia. A quantitative case study method was applied, analyzing planned versus actual steel usage, and calculating the waste percentage compared to the 5% standard from Indonesia’s AHSP. Field data, including drawings, BoQ, and technical reports, were used to measure actual rebar waste and its financial impact. Results show actual waste levels of 2.17% for columns, 2.55% for beams, and 1.21% for slabs significantly lower than the 5% benchmark. This translates into a cost saving of Rp11,393,643.78 for a medium-scale project. These findings confirm that precise planning and reuse of steel offcuts can minimize waste and promote sustainable construction practices. It is recommended that future projects adopt material reuse strategies and integrate digital tools such as BIM to enhance real-time material tracking and cutting optimization.
Analysis of Partial Rehabilitation Costs of Earthquake-Resistant Simple House Structures in Bantul Regency Rianto, Ibnu; Maulana, Rizal; Sari, Sely Novita
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.v10i1.8833

Abstract

The vulnerability of simple houses in earthquake-prone areas, particularly those built independently with limitations of key structural elements, demonstrates the need for a measurable and efficient partial rehabilitation approach. Although the reinforcement of earthquake-resistant buildings has been widely studied, the analysis of partial rehabilitation costs separating the calculations on each major structural element is still relatively limited. This study aims to compile an analysis of partial rehabilitation costs on column, ground beam, and ring beam elements by referring to the Unit Price Analysis and the Bantul Regency Standard Unit Price for Materials and Services in 2024. The quantitative method was applied using technical data from the results of MBKM internship activities at the Bantul Regency BPBD, which included the dimensions of structural elements, ironing details, and concrete quality. The calculation of material requirements and costs is carried out separately on each element to obtain a more measurable estimate. The results of the study showed that the cost of rehabilitating columns, ground beams, and beam rings amounted to Rp 14.676.740,54 each, Rp 14.213.412,00, and Rp 13.009.214,44. These findings confirm that differences in dimensions, element functions, and reinforcement methods have a direct effect on the amount of cost. This research contributes in the form of an approach to partial rehabilitation cost analysis that is applicable as a basis for technical decision-making in the planning of simple house reinforcement in earthquake-prone areas.
Identification of Occupational Health and Safety of Formwork Using the Job Safety Analysis Method of Building Construction Projects Gusttriana, Regita; Sari, Sely Novita; Hermawan, Anggi
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.v10i1.8834

Abstract

Formwork in construction projects has a high level of risk to worker safety due to heavy material handling, equipment use, and activities at height. This study will investigate potential hazards in formwork through Job Safety Analysis (JSA) and assess the effectiveness of risk control based on the Hierarchy of Control, which includes elimination, substitution, engineering control, administrative control, and the use of personal protective equipment (PPE). Data collection was executed via on site observations, evaluation of project K3 documentation, and conversations with safety officers, supervisors, and associated workers. The results of the analysis indicated that risk control was more applied to engineering control (55.1%), administrative control (20.4%), and the use of PPE (20.4%). Meanwhile, of substitution (4.08%) and elimination (0%) are still very low. This condition shows that the control with the highest level of effectiveness has not been maximized, so the potential risk of accidents remains high. The findings emphasize the value of implementing top-level controls from the planning and design stages of the project. The use of Hierarchy of Control-based Job Safety Analysis has proven to be a systematic approach in determining risk control priorities and improving occupational safety management. Thus, the results of this study provide strategic recommendations for construction projects in minimizing accidents and building a more effective safety culture.
Co-Authors Adam Sulton Afredo Tubur, Hasi Albani Musyafa, Albani Alfinur Insaniyati Umi Sa'adah Alwarizi, Fahrol Amir Machmud Amir Machmud, Amir Andary, Fauziah Andrea Sumarah Asih Andri Daeng Salimung Anggi Hermawan Ardian, Oggi Heical Ariza Tiara Ramadhanti Astuti Umasugi Avon Budiono Bagus Gilang Pratama Bagus Gilang Pratama, Bagus Gilang Bere, Gracensia Bismoko Rahadrian Suseno Cengiz, Korhan Chandra Wahyu Herbyanto Clara Anggreini Ines Benge Dandi Pramono Payungan Dandi Pranomo Darlahanus, David Dian Nurcahyani Dika, Resa Priya Do’o, Ricko Rivaldo Ruben Fahrul Nurfajri Mokoagow Fandanu Firdyan Syah Faturrahman Jahrun Trumpi Filipus Alfriyadi Junaidi Filipus Alfriyadi Junaidi Fitri Nugraheni Fitri Nugraheni Grito, Mortalesel Gusttriana, Regita Hadi Riswanto, Teguh Hafid, Anggun Abdul Ilham Mopio Ilham Mopio Ilham Nawawi Ircham Iwan Tri Riyadi Yanto Iwan Tri Riyadi Yanto, Iwan Tri Riyadi Jesika Dekrita Uan Joko Prasojo Joko Prasojo Kartika, Erawati Khairul Mahbubi Khalid S Ridwan Kota, Reynaldus Sean Kristin Yunita Mokoagow, Fahrul Nurfajri Muhammad Hanif Jufri Muhammad Rizky Fajar Mustafa Mat Deris Musyafa', Albani Mutiara Pasande Surugallang Nanda Ramadhani nico siliansyah Norhalina Senan Oggi Heical Ardian Oggi Heicqal Ardian Oni Yuliani Oni Yuliani Ozyurt, Basak Putri Jea, Maria Carvallo Rahmad Junaidi, Rahmad Rahmatullah Gafar kahar Ramadhani, Fauziah ratih dwi indrajad ratih Ratna Kartikasari Rd. Rohmat Saedudin Rianto, Ibnu Ricko Rivaldo Ruben Do’o Ridayati Ridayati Rizal Maulana Rizal Maulana Rizal Maulana, Rizal Rizky Tri Astuti Rizqi Prastowo Sa’adah, Alfinur Insaniyati Umi Sabila, Yusrina Nur Amalia Sabrina Putri Puspitasari Sarwidi Sarwidi Sarwidi, Sarwidi Setya Winarno sianturi, faldi daud suiyoso Silfia Dwi Putri Siswahyudianto Sogar, Aris Umbu Soru Sulton, Adam Syach Reza Fachlevi Syamsul Arifin Tedy Kurniawan Topac, Tuna triwuryanto Triwuryanto Triwuryanto Triwuryanto Veronica Diana Anis Anggorowati wahyu anisa dwi bekti Yobel, Felix Yulius Wijanarko Zulkahhar Ariga