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Program Studi Magister Teknik Sipil Universitas Udayana Jalan P.B. Sudirman, Denpasar, Bali, Indonesia
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Jurnal Spektran
Published by Universitas Udayana
ISSN : 23022590     EISSN : 23022590     DOI : -
Core Subject : Science, Social, Engineering,
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science Transportation
Jurnal Spektran publishes the results of research/studies as well as review articles from students, academics, and practitioners in civil engineering area that covers topics on structural engineering, construction management, transportation, geotechnical, water resources, and environment studies.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 6 Documents
 1 
PARADOKS ADOPSI BIM DI INDONESIA: TINJAUAN SISTEMATIS ATAS EFISIENSI, HAMBATAN, DAN IMPLIKASI KEBIJAKAN I Kadek Badradnyana Wirapraja Mahatama; I Putu Ari Sanjaya; Anak Agung Diah Parami Dewi
Jurnal Spektran Vol. 13, No. 2, Juli 2025
Publisher : Program Studi Magister Teknik Sipil Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/

Abstract

The Indonesian construction industry is at a critical juncture, with government mandates officially encouraging the adoption of Building Information Modeling (BIM) to enhance productivity. However, a significant paradox persists: despite strong evidence of BIM's substantial efficiency benefits, its widespread adoption remains slow and fragmented. This study investigates this paradox through a systematic literature review (SLR) of 79 empirical studies conducted within the Indonesian context. The analysis confirms that BIM offers measurable improvements, including up to 50% time savings during the planning phase and significant cost avoidance from rework, amounting to hundreds of millions of rupiah. Conversely, the study identifies a set of deeply rooted systemic barriers, categorized using the Technology–Organization–Environment (TOE) framework. The most prominent barriers include high initial investment costs (Organisational), a severe shortage of skilled professionals (Organisational), and limited market demand from clients (Environmental). The persistence of this paradox is explained by a cyclical reinforcement of these barriers, a dynamic captured by Institutional Theory, which describes how entrenched norms resist innovation, and Technology Adaptation Theory, which highlights the misalignment between global BIM platforms and local standards (SNI). In contrast to pioneer countries like the UK, Indonesia's BIM mandate lacks comprehensive technical standards, resulting in partial implementation. This study proposes a dual-pronged strategy to break the cycle: top-down government intervention through the development of national standards and a localised BIM component library, and bottom up, market-driven adoption of collaborative contracting models such as Integrated Project Delivery (IPD) to align stakeholder incentives.
ANALISIS KINERJA FILTRASI ARANG DAN IJUK PADA INSTALASI PEMANENAN AIR HUJAN (IPAH) KOMUNAL SEBAGAI UPAYA PENINGKATAN AKSES AIR BERSIH DI DESA TIHINGAN, KABUPATEN KLUNGKUNG, BALI Febryan Aristarchus Rajagukguk; Ida Bagus Made Baskara Andika; Cokorda Istri Niti Laksmi Dewi; Rahma Swari Ramadhani; Fanni Ibrahim Sholeh Siregar; Michael Hesy Kurnia
Jurnal Spektran Vol. 13, No. 2, Juli 2025
Publisher : Program Studi Magister Teknik Sipil Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/

Abstract

The decline of green open space and uneven water distribution resulted in limited access to clean water in Tihingan Village, Banjarangkan District, Klungkung Regency. This condition poses challenges for fulfilling the community’s basic needs for consumption and hygiene-sanitation. Communal Rainwater Harvesting Installation (Instalasi Pemanenan Air Hujan/IPAH) is proposed as a strategic alternative of appropriate technology in clean water provision. Raw rainwater often does not meet clean water standards, thus requiring an effective and affordable filtration process. This study aims to analyze the performance of charcoal and palm fiber filtration media in improving the quality of harvested rainwater in communal IPAH to meet Class I clean water standards. A descriptive-comparative method with an experimental laboratory approach was employed. Rainwater samples were collected before (influent) and after filtration (effluent). Tested parameters included pH, Escherichia coli content, Total Suspended Solids (TSS), and ammonia (NH₃). The filtration media consisted of a combination of locally sourced charcoal and palm fiber. Results showed that the filtration effectively reduced TSS, decreased E. coli content to meet quality standards, and lowered ammonia to safe levels, with improved pH levels. The water quality after filtration complied with Class I clean water standards and was suitable for hygiene and sanitation purposes. This system proved effective, inexpensive, environmentally friendly, and supported sustainable clean water provision while providing local economic benefits. Filtration using charcoal and palm fiber media can be a practical and replicable model to provide clean water in similar regions.
PERENCANAAN PENYEDIAAN AIR MINUM BERBASIS MASYARAKAT DI DUSUN TOMUAN PANE, KABUPATEN SIMALUNGUN, SUMATERA UTARA Andika, Ida Bagus Made Baskara; Nainggolan, Kristina Marta; Astiti, Sagung Putri Chandra
Jurnal Spektran Vol. 14, No. 1, Januari 2026
Publisher : Program Studi Magister Teknik Sipil Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/

Abstract

Tomuan Pane Hamlet in Simalungun Regency, North Sumatra, faces critical challenges in drinking water provision due to the absence of a household water distribution network. Additionally, water quality tests revealed phosphate and total coliform contamination levels exceeding the drinking water standards set by the Indonesian Ministry of Health Regulation No. 2 of 2023. The contamination is attributed to nearby agricultural activities and poorly maintained environmental infrastructure. This study aims to design a simple, community-based water distribution and treatment system (Penyediaan Air Minum Berbasis Masyarakat: PAMBM). Water demand projections were calculated using three population growth methods: arithmetic, geometric, and least square approaches. The distribution network was simulated using EPANET 2.2 software. The water treatment system was designed utilizing simple filtration tailored to local conditions. Population projections indicate that water demand in 2040 will reach 0.88 L/s. The proposed treatment system consists of two filtration stages: a 1.2-meter downflow reactor of 67% zeolite, 8% sand, 8% activated carbon media, and a 2-meter upflow reactor of 21% zeolite, 21% gravel, 27% activated carbon, and 21% sand media:. The combined system effectively reduced phosphate concentrations by 49.39% and completely eliminated total coliforms (100% removal). The distribution network simulation produced an average flow velocity of 0.71 m/s using a 5 cm transmission pipe and a 4 cm main distribution pipe.
EVALUASI KINERJA STRUKTUR BETON BERTULANG DENGAN DAN TANPA DILATASI (Studi Kasus: Gedung Lapas Perempuan Tabanan) Putra, Putu Bagus Sayudha; Sukrawa, Made; Susila, I Gede Adi
Jurnal Spektran Vol. 14, No. 1, Januari 2026
Publisher : Program Studi Magister Teknik Sipil Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/

Abstract

The Women's Correctional Facilty (Lapas) building in Tabanan is a multi-storey building with a total length of 51.45 m which is designed using a twin column dilation system. Generally, dilation is applied to buildings with irregular floor plans or lengths exceeding 60 m. Considering that this building has a regular floor plan and less than 60 m span, the effectiveness of using dilation needs to be evaluated to improve efficiency without reducing structural safety. This study compares the performance of the Model with Dilation (MDD) and Model Without Dilation (MTD) against earthquake, thermal, and concrete shrinkage loads. The analysis was carried out using SAP2000 with the Dynamic Response Spectrum and Static Nonlinear Pushover Analysis (SNPA) methods based on SNI 1726:2019 and ATC-40. The thermal load was modeled with ΔT = 4.67°C and concrete shrinkage with a strain of εsh = −0.0003. The results show a maximum ratio MTD deviation of 0.52%, which is below the allowable limit of 0.77%, and both models achieved the Immediate Occupancy (IO) level. Shrinkage analysis increased the MTD beam reinforcement requirement by 21% without any dimensional changes. In terms of efficiency, MTD reduced concrete volume by 8%, making the dilation-free design more optimal, safe, and economical.
INTEGRASI BIM-IOT DALAM KONSTRUKSI INDONESIA: ANALISIS STUDI KASUS KOMPARATIF Mahatama, I Kadek Badradnyana Wirapraja; Sanjaya, I Putu Ari
Jurnal Spektran Vol. 14, No. 1, Januari 2026
Publisher : Program Studi Magister Teknik Sipil Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/

Abstract

Building Information Modeling (BIM) has become a global standard in the construction industry, delivering 30–50% efficiency improvements and significant cost reductions. However, Indonesia faces an adoption paradox where high awareness levels (67–72%) contrast sharply with low implementation rates (38%), creating a persistent gap of approximately 30 percentage points despite regulatory mandates introduced since 2018. This systematic literature review aims to assess BIM maturity levels in Indonesia, identify Technology–Organization–Environment (TOE) factors influencing BIM–IoT integration readiness, determine the minimum BIM maturity threshold required for Digital Twin integration, and evaluate maturity assessment frameworks applicable to the Indonesian context. Following PRISMA 2020 guidelines, 123 peer-reviewed studies (41.5% from Q1 journals) published between 2013–2025 were analyzed using the TOE framework combined with Succar's BIM Maturity Matrix. The findings indicate that BIM maturity in Indonesia remains predominantly at Level 1 (38.2%), with only 11.8% achieving Level 2, while across 527 TOE factor occurrences, barriers (61.1%) significantly outweighed enablers (38.9%), with human resources and skills limitations emerging as the most frequently cited barrier. BIM–Digital Twin integration, which dominates global research trajectories, requires at least Level 2 maturity, a threshold not yet reached by most Indonesian organizations. Furthermore, only two Indonesia-specific assessment frameworks were identified, i.e. highlighting the need for a dual strategy combining top-down regulatory enforcement with bottom-up capacity development to accelerate BIM–IoT integration readiness in Indonesia.
PERENCANAAN JARINGAN TRAYEK DAN RUTE ANGKUTAN PENGUMPAN (FEEDER) BUS TRANS METRO DEWATA DAN TRANS SARBAGITA DI KABUPATEN BADUNG Suthanaya, Putu Alit; Saraswati, Ni Putu Delima Yogeswari; Wardani, Kadek
Jurnal Spektran Vol. 14, No. 1, Januari 2026
Publisher : Program Studi Magister Teknik Sipil Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/

Abstract

A feeder transport service is planned to support Bus Trans Metro Dewata and Trans Sarbagita in Badung Regency, specifically on the route from Mengwi Terminal to Pasar Adat Buduk, Mengwi Terminal to PT Indomarco Prismatama Tbk. Indomaret DC Mengwi Route, Mengwi Terminal to Sibang Gede Market Route, Mengwi Terminal to Monkey Forest Sangeh Route, Mengwi Terminal to Mambal Market Route, Mengwi Terminal to SMA N 1 Kuta Utara Route, Udayana University Rectorate to Jimbaran Beach Route, Bali State Polytechnic to Balangan Beach Route, Bali State Polytechnic to Pandawa Beach Route, ITDC Nusa Dua to Bali Tourism Polytechnic Route, ITDC Nusa Dua to Tanjung Benoa Beach Route, and ITDC Nusa Dua to Gunung Payung Beach Route. The methods used were demand potential analysis, operational system analysis, and Vehicle Operating Cost (VOC) analysis. The results of this study show that the 6 planned routes located in the North Badung Region have an average of 31,803 potential passengers per day with an average vehicle requirement of 73 fleets, an average circulation time of 67.132 minutes, an average annual BOK of IDR 217,910,721.20 per fleet, and an average BOK per kilometer of IDR 4,529.00. The South Badung Region has an average of 12,787 passengers per day with an average vehicle requirement of 22 fleets, an average circulation time of 48 minutes, an average annual BOK of Rp216,741,880.89 per fleet, and an average BOK per kilometer of Rp4,600.45 per fleet. Thus, it can be concluded that each route in North Badung and South Badung has high potential demand for transportation, given the large number of vehicles needed to serve potential passengers.

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