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All Journal Bearing : Jurnal Penelitian dan Kajian Teknik Sipil Journal of Infrastructure Planning and Engineering
Muhammad Arfan
Civil Engineering Study Program, Universitas Muhammadiyah Palembang, Indonesia
Civil Engineering, Building, Construction & Architecture Engineering Industrial & Manufacturing Engineering Transportation

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The behavior of the Perbaungan railway subgrade Aazokhi Waruwu; Muhammad Arfan; Tubel Oktor Waruwu
Journal of Infrastructure Planning and Engineering Vol. 1 No. 1 (2022)
Publisher : Master Program of Infrastructure and Environmental Engineering, Postgraduate Program, Warmadewa University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22225/jipe.1.1.2022.46-50

Abstract

Railway subgrade is a layer consisting of soil material which can be in the form of natural soil, repaired material, and in the form of embankment of selected soil material that meets the specifications. The subgrade that meets the requirements is soil with a minimum CBR value of 8% with a minimum thickness of 30 cm. This study aims to analyze and evaluate the CBR value of the railway subgrade. Subgrade analysis was carried out on the improvement of the railway - replacement of concrete pads and rails R.25/33/42 to R.54 concrete pads from km 39 + 100 to km 40 + 200 along 1100 m in Perbaungan North Sumatra. The structure of the soil layer that is analyzed is the structure of the subsoil in the form of subgrade. The CBR value of the subgrade in the form of soil is determined based on the results of the analysis of the DCP data. The CBR value is evaluated based on the provisions that apply to the railway subgrade. The behavior of the railway subgrade can be seen from the CBR value of the original subgrade. Based on the results of the analysis, it was found that the behavior of the railway subgrade was quite diverse and it was found that only 39% met the requirements for the rail subgrade. Handling carried out in the field to improve the behavior of the subgrade is by using a backfill system made of good material with a density and CBR value that meets the requirements for railways.
Analisa Penerapan (SMK3) Studi Kasus Proyek Pembangunan Bendungan Tiga Dihaji Paket VI Revisdah Revisdah; Muhammad Arfan; Nurnilam Oemiati
Bearing : Jurnal Penelitian dan Kajian Teknik Sipil Vol 11, No 1 (2026): Bearing : Jurnal Penelitian dan Kajian Teknik Sipil
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jbearing.v11i1.11129

Abstract

The construction of dams is categorized as a high-risk activity in the infrastructure sector due to the involvement of heavy equipment, complex structures, and intensive manpower. This study aims to analyze the implementation of the Occupational Safety and Health Management System (SMK3) in the Tiga Dihaji Dam Construction Project Package VI, South Sumatera, Indonesia. A quantitative research approach was employed by distributing questionnaires based on ISO 45001:2018 indicators, conducting direct field observations, and interviews with project workers. The sample size was determined using the Taro Yamane formula with a 15% precision level, resulting in 36 respondents out of 192 workers. Data were analyzed using validity tests, reliability tests with Cronbach’s Alpha, and Pearson correlation with the assistance of SPSS 27. The results show that the implementation of SMK3 in this project falls into the very good category, supported by high compliance with helmet and safety shoes usage. However, compliance with certain personal protective equipment, such as masks, safety harnesses, and safety glasses, remains low. These findings indicate that while the contractor has effectively implemented SMK3 according to Government Regulation No. 50 of 2012, further improvement is needed in developing a strong safety culture, particularly in personal protective equipment awareness. In conclusion, SMK3 implementation in the Tiga Dihaji Dam Project has been effective, but continuous training and supervision are recommended to enhance occupational safety performance in future construction projects.
Co-Authors Aazokhi Waruwu Aazokhi Waruwu Nurnilam Oemiati Revisdah Revisdah Tubel Oktor Waruwu