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Manurung, Edison H
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Economics, Econometrics & Finance Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Other

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TINJAUAN ETIKA PROFESI ENGINEER TERHADAP PENGGUNAAN MATERIAL TIDAK SESUAI SPESIFIKASI PADA PEKERJAAN BORED PILE Prasetyo, Bagus Nugroho; Manurung, Edison H
SINERGI : Jurnal Riset Ilmiah Vol. 2 No. 7 (2025): SINERGI : Jurnal Riset Ilmiah, Juli 2025
Publisher : Lembaga Pendidikan dan Penelitian Manggala Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62335/sinergi.v2i7.1539

Abstract

Pekerjaan bored pile merupakan bagian penting dalam sistem pondasi bangunan yang membutuhkan ketelitian tinggi dan penggunaan material dengan mutu yang telah ditentukan. Namun dalam praktik lapangan, sering ditemukan penyimpangan berupa penggunaan material yang tidak sesuai spesifikasi teknis, seperti beton mutu rendah dan baja tulangan tidak standar. Hal ini menimbulkan masalah tidak hanya dari sisi teknis, tetapi juga dari aspek etika profesi seorang engineer. Makalah ini membahas peran dan tanggung jawab etika seorang engineer dalam menghadapi kasus ketidaksesuaian material pada pekerjaan bored pile. Dengan pendekatan deskriptif-kualitatif dan studi literatur, dibahas bagaimana pelanggaran etika dapat berdampak pada keselamatan publik serta integritas struktur. Hasil kajian menunjukkan bahwa sikap profesional, keberanian moral, dan penerapan sistem pengawasan mutu yang ketat merupakan kunci dalam mencegah pelanggaran etika. Engineer harus berani bersikap tegas terhadap praktik menyimpang demi menjaga kualitas dan keselamatan proyek konstruksi.
PERENCANAAN BALOK LENTUR TANPA PENGAKU LATERAL Sitangganga, Ariza Putra; Manurung, Edison H
SINERGI : Jurnal Riset Ilmiah Vol. 2 No. 7 (2025): SINERGI : Jurnal Riset Ilmiah, Juli 2025
Publisher : Lembaga Pendidikan dan Penelitian Manggala Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62335/sinergi.v2i7.1578

Abstract

This study discusses the structural planning of steel flexural beams without lateral bracing, a critical condition in structural design due to the risk of lateral-torsional buckling. The beam used in this analysis is a WF 450x250x6x9 steel profile with a span of 18.5 meters, subjected to a dead load of 2.85 kN/m and a live load of 3.45 kN/m. The material selected is BJ40-grade structural steel. The analysis incorporates nominal flexural strength, stiffness, and the effect of unbraced length in the lateral direction. The design process adheres to the Indonesian standard SNI 1729:2020, which regulates specifications for structural steel buildings. The combined loads are first converted into factored loads using ultimate load combinations. The maximum moment on the span is then calculated. Determining the nominal flexural capacity takes into account the stability effects due to the unbraced length, which reduces the nominal plastic capacity of the beam. The final results show that the WF 450x250x6x9 beam can resist a design moment of 1704.11 kNm, with a nominal flexural strength (Mn) of 1722.92 kNm, indicating the beam is safe under the given loading
EVALUASI EFISIENSI PENGGUNAAN BETON BERTULANG PADA STRUKTUR JEMBATAN Prasetyo, Bagus Nugroho; Manurung, Edison H
SINERGI : Jurnal Riset Ilmiah Vol. 3 No. 1 (2026): SINERGI : Jurnal Riset Ilmiah, January 2026
Publisher : Lembaga Pendidikan dan Penelitian Manggala Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62335/sinergi.v3i1.2238

Abstract

Efficiency in bridge construction is a critical multidimensional concept, encompassing structural, economic, and time aspects. This study aims to evaluate the efficiency of reinforced concrete use in bridge structures through a comparative analysis of various design parameters. The method used is applied research with a quantitative approach, through parametric design simulations of 18 scenarios which are a combination of cross-section type variables (T-Beam and Box Girder), concrete quality (K-300, K-350, K-450), and span length (20m, 30m, 40m). The analysis was carried out in an integrated manner with SAP2000 software for structural modeling and manual calculations based on SNI 2847:2019 and RSNI T-02-2005 for reinforcement design and cost analysis.The study results show that box girders are consistently more structurally efficient, with up to a 22% reduction in concrete volume compared to T-beams over a 30m span, especially when using high-grade concrete (K-450). However, from an economic efficiency perspective, conventional T-beams remain superior, with initial construction costs 4.6% lower under similar conditions, driven by lower formwork and labor costs. A weighted multi-criteria analysis reveals that the most efficient option depends heavily on project priorities: conventional K-350 T-beams are optimal for cost-oriented projects, while precast K-450 box girders excel for projects prioritizing speed and performance. The study concludes that there is no universally best solution and recommends analyzing design alternatives at the concept stage to achieve holistic resource optimization in bridge planning in Indonesia
Co-Authors Prasetyo, Bagus Nugroho Sitangganga, Ariza Putra