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All Journal Jurnal Sains dan Teknologi RACIC : Rab Construction Research Jurnal Kacapuri : Jurnal Keilmuan Teknik Sipil Jurnal Ilmu Pengetahuan dan Teknologi (IPTEK) Journal La Multiapp Jurnal Penelitian Rumpun Ilmu Teknik Ocean Engineering: Jurnal Ilmu Teknik dan Teknologi Maritim
Rachmi Yanita
Program Studi Teknik Sipil, ITI
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Optimalisasi Waktu dan Biaya melalui Value Engineering Substitusi Standar Material Baja pada Proyek EPC Alde Noverli. Y; Rachmi Yanita
Ocean Engineering : Jurnal Ilmu Teknik dan Teknologi Maritim Vol. 5 No. 2 (2026): Ocean Engineering : Jurnal Ilmu Teknik dan Teknologi Maritim
Publisher : Fakultas Teknik Universitas Maritim AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58192/ocean.v5i2.5296

Abstract

The implementation of Engineering, Procurement, and Construction (EPC) projects often encounters logistical and supply chain challenges, particularly when design specifications strictly adhere to foreign standards not locally available. This research evaluates the application of Value Engineering (VE) to resolve material scarcity in an integrated Central Processing Facility project in East Kalimantan. The initial design mandated Chinese standard (GB) materials, causing an 8-12 week import lead time that threatened the critical path of the lump-sum contract. Through a Technical Deviation Request (TDR), the engineering team proposed substituting GB materials with equivalent Indonesian National Standards (SNI) and ASTM materials. A multi-criteria decision analysis was utilized to ensure the structural integrity, verifying the geometric validation and mechanical capacities of local H-Beams and high-strength rebars. The results demonstrate a significant project acceleration of 30 days and a direct cost efficiency of 13% (Rp 1.625 billion). The substitution also reinforced local industry empowerment (TKDN) and minimized the carbon footprint of international logistics, all while strictly adhering to occupational health and safety (HSE) protocols.
Analisis Kelayakan Struktural Menara Kaki Empat (Self Supporting Tower) Greenfield Ketinggian 72 Meter: Studi Kasus: Robohnya Tower di Ohoirenan-Maluku Duden Dodi Hartono; Rachmi Yanita
Jurnal Penelitian Rumpun Ilmu Teknik Vol. 5 No. 3 (2026): Jurnal Penelitian Rumpun Ilmu Teknik
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/juprit.v5i3.6766

Abstract

Telecommunication towers are vital infrastructures that support modern communication systems. Structural failure of telecommunication towers may lead to technical, economic, and public safety impacts. This study aims to analyze the causes of the collapse of a 72-meter Self Supporting Tower (SST) located in Ohoirenan Village, Southeast Maluku Regency. The research employed a case study method with a descriptive approach and technical analysis based on the ANSI/TIA-222-G standard. The analysis results indicate that the structural failure was caused by the loss of several structural elements, including bracing members, connection plates, and bolts, as well as bolt tightness that did not meet the required standards. In addition, extreme wind loads and inadequate maintenance contributed to accelerating the structural collapse. From a non-technical perspective, violations of ethics, weak professionalism, and suboptimal implementation of Occupational Health, Safety, and Environment (OHSE) practices were also identified. This study recommends improving design quality, construction supervision, and the implementation of stricter safety management systems to prevent similar incidents in the future.
Manajemen Pembangunan Pada Developer Perumahan (Britania Cilegon) Fadly Ardiyatna; Rachmi Yanita; Yenny Widianty
Ocean Engineering : Jurnal Ilmu Teknik dan Teknologi Maritim Vol. 5 No. 2 (2026): Ocean Engineering : Jurnal Ilmu Teknik dan Teknologi Maritim
Publisher : Fakultas Teknik Universitas Maritim AMNI Semarang

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

Abstract

The development of cluster housing requires integrated management involving civil engineering aspects, construction quality control, project management, cost efficiency, time scheduling, and post-construction maintenance. This colloquium study discusses engineering practices in the Britania Cilegon Housing Project developed by PT. MAS Group, focusing on the construction of Phase I consisting of 160 housing units of type 40 and type 51 out of the total planned area of 535 plots. The methods applied in this study included field observations, project document analysis, technical coordination with the developer and contractors, and engineering evaluation of construction implementation and building maintenance processes. The results indicate that land procurement and site preparation were generally carried out effectively; however, the land elevation, which was relatively close to the river level, required stricter supervision of fill work and drainage systems. Housing designs were prepared internally by the developer, while construction activities were divided based on block zones, house types, and Work Order Letters (SPK). Several major issues identified during construction included inconsistencies in work quality among contractors, violations of construction procedures, project delays caused by inefficient allocation of contractor resources, and defects found in roof structures, wall finishes, and wet areas. Control measures were implemented through quality checklists, progress monitoring using bar charts and S-curves, corrective instructions, and penalties in the form of budget deductions when repairs were conducted directly by the developer. This engineering practice demonstrates that successful housing development is strongly influenced by consistent supervision, sustainable design innovation, environmental awareness, and commitment to maintaining residential quality.
Co-Authors Alde Noverli. Y andi sagab Dene Herwanto Duden Dodi Hartono Fadly Ardiyatna Gufran Andreas Hansen C Intan F Ningrum Krishna Mochtar Mega Bagus Herlambang Nugraha, Billy Nurdiyanto Nurdiyanto Padli Irawan Romadhon MS Tedy Yudistira Terry Novi AR Wahyudin Wahyudin Yenny Widianty