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All Journal Seminar Nasional Ilmu Terapan Jurnal Ilmu Ekonomi, Pendidikan dan Teknik (IDENTIK) Jurnal Pengabdian kepada Masyarakat Multidisiplin (JUPENGEN) Innovative Research in Civil and Environmental Engineering (IRCEE)
Jefri Rahmat Daeli
Universitas Nias
Religion Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media

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Strategi Peningkatan Keterampilan Pertukangan Kayu Sebagai Upaya Pemberdayaan Ekonomi Masyarakat Desa Mudik Dermawan Zebua; Hamedoni Harita; Bimawijaya Laia; Muhammad Haris Zalukhu; Serta Denius Daeli; Ikhtiar Aronifati Daeli; Jun Fajar Krisman Giawa; Kevin Berkat Mendrofa; Friski Dermawan Zebua; Rifki Wahyudi Mendrofa; Jefri Rahmat Daeli
Jurnal Pengabdian Kepada Masyarakat Multi Disiplin Vol. 2 No. 3 (2025): JUPENGEN - Agustus
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/jupengen.v2i3.728

Abstract

The carpentry training program in Mudik Village aims to improve the technical and entrepreneurial skills of the community as part of local economic empowerment efforts. The three-day training program utilizes a combination of theory and practice. The first day focused on theoretical material, including an introduction to wood types, equipment usage, measurement techniques, occupational safety principles, and entrepreneurial fundamentals. The second and third days focused on hands-on practice in making simple products, such as bookshelves, covering the measuring, cutting, assembly, and finishing processes. Evaluation results showed significant skill improvements across all aspects, with the greatest improvement in the ability to use modern tools (+64%). Furthermore, participants demonstrated increased awareness of occupational safety and understanding of product marketing strategies. This training demonstrated that the three-day, integrative approach can improve skills while motivating the community to develop carpentry businesses. Future recommendations include further training, business mentoring, and the formation of village business groups to support the program's sustainability.
Evaluation Of Soil Bearing Capacity Based On Cone Penetration Test (CPT) Results In Gunungsitoli City, Indonesia Bimawijaya Laia; Jefri Rahmat Daeli; Andrew Christover Harefa; Piter Telaumbanua; Kevin Berkat Mendrofa
Innovative Research in Civil and Environmental Engineering Vol. 3 No. 1 (2026): IRCEE - April
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/ircee.v3i1.1876

Abstract

Soil bearing capacity is a critical parameter in geotechnical engineering that determines the safety, stability, and performance of foundation systems. Accurate evaluation of bearing capacity is essential for selecting appropriate foundation types and preventing excessive settlement or structural failure. This study aims to evaluate the soil bearing capacity in Gunungsitoli City, Indonesia, based on Cone Penetration Test (CPT) results. A quantitative descriptive research approach was employed using in-situ CPT data collected from six representative investigation points. The analysis involved the interpretation of cone tip resistance (qc), sleeve friction (fs), friction ratio (Rf), soil stratification, and estimation of allowable bearing capacity through established empirical correlations. The results indicate that cone resistance generally increases with depth, reflecting a transition from soft clay and silty sand near the ground surface to dense sandy deposits at greater depths. The estimated allowable bearing capacity ranges from 320 kPa to 500 kPa, depending on local subsurface conditions. These values suggest that isolated footings are suitable for light to medium-rise structures, whereas raft or pile foundations are recommended for heavier infrastructure. Spatial variations in bearing capacity demonstrate the influence of local geological conditions, emphasizing the necessity of conducting site-specific geotechnical investigations before construction. Overall, the study confirms that the Cone Penetration Test provides a reliable, efficient, and economical method for evaluating soil bearing capacity and supports safer and more cost-effective foundation design for future infrastructure development in Gunungsitoli City.
PERBANDINGAN DATA DUKUNGAN TANAH HASIL ANALISIS SONDIR DENGAN METODE EMPIRIS MEYERHOF DAN SCHMERTMANN Pasrah Iman Anugerah Putra Ziliwu; Jefri Rahmat Daeli; Kevin Berkat Mendrofa; Ingat Selamat Ziliwu; Andrew christofer Harefa; Putra Jaya Laoli; Dermawan Zebua
Seminar Nasional Ilmu Terapan Vol 9 No 1 (2025): Vol 9 No 1 (2025): Seminar Nasional Ilmu Terapan (SNITER) 2025
Publisher : Universitas Widya Kartika Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian ini bertujuan untuk membandingkan hasil perhitungan daya dukung tanah berdasarkan data uji sondir (Cone Penetration Test) menggunakan dua metode empiris, yaitu Meyerhof dan Schmertmann. Data diperoleh dari pengujian di Lokasi X hingga kedalaman 5,6 meter dengan interval 0,2 meter. Nilai perlawanan konus (qc) digunakan untuk menghitungdaya dukung ultimit (q?????) dan daya dukung izin (q???). Hasil analisis menunjukkan bahwa daya dukung meningkat seiring kedalaman dan metode Meyerhof menghasilkan nilai yang lebih tinggi dibandingkan Schmertmann dengan selisih sekitar 25–35%. Perbedaan ini disebabkan oleh pendekatan analisis Meyerhof yang lebih sensitif terhadap nilai qc tinggi, sementaraSchmertmann mempertimbangkan deformasi tanah. Berdasarkan interpretasi grafik, lapisan tanah keras ditemukan pada kedalaman sekitar 3–3,5 meter yang direkomendasikan sebagai kedalaman pondasi optimal. Hasil penelitian ini diharapkan dapat menjadi acuan dalam menentukan daya dukung tanah secara empiris menggunakan data uji sondir. kolom.
Analisis Penggunaan Tenaga Kerja Lokal Pada Proyek Konstruksi Alexander Adnan Hans Duha; Jun Fajar Krisman Giawa; Jefri Rahmat Daeli; Hamedoni Harita
Jurnal Ilmu Ekonomi, Pendidikan dan Teknik Vol. 3 No. 2 (2026): IDENTIK - Maret
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/identik.v3i2.1359

Abstract

This study aims to analyze the utilization of local labor in construction projects in the Nias region and to identify the factors influencing their level of involvement. The research employs a descriptive quantitative approach, with data collected through questionnaires, interviews, and field observations. The sample was selected using a purposive sampling technique, involving construction workers, contractors, and project supervisors. Data analysis was conducted using descriptive statistics and factor analysis to determine the dominant factors affecting the use of local labor. The results indicate that the level of local labor involvement falls into a moderate category, accounting for approximately 60–70% of the total project workforce. The primary factor influencing the use of local labor is workforce competence, followed by contractor policies, education and training levels, as well as geographical and socio-cultural conditions. The use of local labor has a positive impact on increasing community income and employment opportunities; however, challenges remain in terms of work quality due to limited skills. This study concludes that optimizing the use of local labor requires improving competencies through training and certification, as well as strengthening policies that support local workforce empowerment. Synergy between the government, contractors, and the community is essential to achieving inclusive and sustainable construction development in the Nias region.
Co-Authors Alexander Adnan Hans Duha Andrew christofer Harefa Andrew Christover Harefa Bimawijaya Laia Dermawan Zebua Friski Dermawan Zebua Harita, Hamedoni Ikhtiar Aronifati Daeli Ingat Selamat Ziliwu Jun Fajar Krisman Giawa Kevin Berkat Mendrofa Muhammad Haris Zalukhu Pasrah Iman Anugerah Putra Ziliwu Piter Telaumbanua Putra Jaya Laoli Rifki Wahyudi Mendrofa Serta Denius Daeli