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ARTIFICIAL NEURAL NETWORKS UNTUK PEMODELAN CURAH HUJAN-LIMPASAN PADA DAERAH ALIRAN SUNGAI (DAS) DI PULAU BALI IGB. Sila Dharma; IGA. Adnyana Putera; Putu Doddy Heka Ardana
Bumi Lestari Journal of Environment Vol 11 No 1 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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

Rainfall-runoff transformation of a watershed is one of the most complex hydrology phenomena, nonlinier process, time-varying and spatial distribution. Rainfall-runoff relationships play an important role in water resource management planning and therefore, different types of models with various degrees of complexity have been developed for this purpose. The application of Artificial Neural Networks (ANNs) on rainfall-runoff modelling has studied more extensively in order to appreciate and fulfil the potential of this modelling approach. Back propagation method has used in this study for modelling monthly rainfall for small size catchments areas. ANN model developed in this study successfully predicts relationship for rainfall-runoff with 90.14% accuracy on learning process and 72.41% accuracy on testing process. These results show that ANN provides a systematic approach for runoff estimation and represents improvement in prediction accuracy.

PENERAPAN VALUE ENGINEERING PADA PROYEK PEMBANGUNAN PRASARANA PENGENDALI BANJIR TUKAD MATI I Gusti Agung Adnyana Putera; I Putu Gustave Suryantara Pariartha; I Made Krisna Udiana
JURNAL SPEKTRAN Vol 11 No 1 (2023)
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRAN.2023.v11.i01.p02

Balai Wilayah Sungai Bali-Penida (BWS Bali-Penida) menggagas Pembangunan Prasarana Pengendali Banjir Tukad Mati pada tahun 2017 sebagai bagian dari upaya pemerintah untuk mengatasi seringnya banjir yang terjadi di wilayah Kabupaten Badung dan Kota Denpasar. Proyek tersebut direncanakan selesai dalam 2 tahun (2018 s/d 2019) dengan biaya mencapai 450 miliar rupiah. Ketika proyek berlangsung, proyek dengan dana yang besar memiliki kompleksitas yang tinggi dan berisiko terjadinya perubahan biaya. Dalam upaya melakukan optimalisasi desain, salah satunya dapat dilakukan rekayasa nilai (value engineering). Value engineering memberikan alternatif–alternatif desain atau produk yang memiliki biaya lebih rendah namun dengan fungsi dan kualitas yang sama dengan desain awal. Metode penelitian ini menggunakan tahapan job plan value engineering yaitu tahap informasi, tahap kreatif, tahap analisa dan tahap rekomendasi. Pekerjaan yang layak dianalisis dengan teknik nilai berbasis Pareto adalah Pekerjaan Beton Struktur Tanggul K-300. Dari hasil brainstorming akhirnya memunculkan 3 alternatif desain yaitu Tanggul CCSP, DPT Counterfort dan DPT Beton Modular. Penilaian terhadap kriteria dan masing-masing alternatif menggunakan Analytical Hierarchy Process (AHP). Hasil analisis menunjukkan alternatif 2 yaitu DPT Counterfort sebagai alternatif terbaik dari yang lainnya dengan bobot B/C ratio sebesar 1,542. Alternatif DPT Counterfort mampu menghemat biaya sebesar Rp. 34.048.777.533,82 atau dalam prosentase 40 % terhadap desain awal dan 7,74 % terhadap biaya total proyek.

CLASH DETECTION ANALYSIS OF RSIA BUILDING CONSTRUCTION USING AUTODESK REVIT AND NAVISWORKS I Putu Ari Sanjaya; I Gusti Agung Adnyana Putera; Putu Ira Pramesti Wiraningsih; The Nikolaus Ferrer
Jurnal Ilmiah Teknik Sipil Vol. 29 No. 1 (2025): Jurnal Ilmiah Teknik Sipil, Vol. 29 No. 1, Maret 2025
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v29.i01.p09

Clashes between objects in construction projects often lead to delays, increased costs, and rework due to a lack of coordination between disciplines and the limitations of traditional clash detection technologies. This study evaluates the effectiveness of implementing clash detection based on Building Information Modeling (BIM) using Autodesk Revit and Navisworks in reducing rework, additional costs, and project duration. The research adopts a quantitative method using secondary data, including 3D models, time schedules, and Unit Price Analysis. The analysis identified a total of 964 clashes, consisting of 274 structure-MP clashes, 603 architectural-MP clashes, and 87 structure-architectural clashes. The implementation of clash detection resulted in a rework reduction of 0.34% and a total cost saving of 4.63%, which includes savings in structural work (0.08%), architectural work (7.76%), and mechanical-plumbing work (0.06%). Avoided rework includes the demolition of 4.93 m³ of concrete, 70.81 m² of walls, 1051.11 m² of ducting relayout, and 1.05 m of pipe relocation. Additionally, the potential time saving is estimated at 41.7 days or 7.79% of the total project duration.

IMPLEMENTATION OF BIM 5D IN THE IMPLEMENTATION PLAN OF THE TRANS SUMATRA – JAMBI TOLL ROAD WITH CIVIL 3D AND NAVISWORK Ariany Frederika; I Gusti Agung Adnyana Putera; I Nyoman Aditya Prabawa
Jurnal Ilmiah Teknik Sipil Vol. 29 No. 2 (2025): Jurnal Ilmiah Teknik Sipil, Vol. 29 No. 2, September 2025
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2025.v29.i02.p09

Significant contributions to technological advancement are helpful in various aspects of work. In Circular Letter 11/SE/Db/2021, it is emphasized that the use of Building Information Modelling (BIM) must be applied in the planning stage of highway construction. 3D and 5D modeling can be done using Autodesk Civil 3D, while 4D modeling can be facilitated through Autodesk Navisworks. This study takes the Trans Sumatra Jambi Toll Road Project as an object of study with the aim of modeling toll roads using BIM-based Autodesk Civil 3D, analyzing the estimated costs from the modeling results, and visualizing the progress plan of mainroad work at a certain time through Autodesk Navisworks. Secondary data includes DED, BoQ and HSP. Modeling was performed on Autodesk Civil 3D including modeling of excavations and embankments as well as road pavement and drainage structures, Clash detection using Autodesk Naviswork, volume of work integrated using Microsoft Project and time simulation using Autodesk Naviswork. The results of the study show that from the modeling that has been carried out, the estimated cost of mainroad work has a deviation of -3.24% from the BoQ document. Comparison of data shows that the estimated volume and cost generated using the Autodesk Civil 3D BIM method is smaller than the conventional method. Simulated mainroad work progress display using Autodesk Naviswork software shows construction simulations, time progress tracking, and cost estimation in an integrated and informative manner to support project decision-making.

CLASH DETECTION ANALYSIS OF RSIA BUILDING CONSTRUCTION USING AUTODESK REVIT AND NAVISWORKS I Putu Ari Sanjaya; I Gusti Agung Adnyana Putera; Putu Ira Pramesti Wiraningsih; The Nikolaus Ferrer
Jurnal Ilmiah Teknik Sipil Vol. 29 No. 1 (2025): Jurnal Ilmiah Teknik Sipil, Vol. 29 No. 1, Maret 2025
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v29.i01.p09

Clashes between objects in construction projects often lead to delays, increased costs, and rework due to a lack of coordination between disciplines and the limitations of traditional clash detection technologies. This study evaluates the effectiveness of implementing clash detection based on Building Information Modeling (BIM) using Autodesk Revit and Navisworks in reducing rework, additional costs, and project duration. The research adopts a quantitative method using secondary data, including 3D models, time schedules, and Unit Price Analysis. The analysis identified a total of 964 clashes, consisting of 274 structure-MP clashes, 603 architectural-MP clashes, and 87 structure-architectural clashes. The implementation of clash detection resulted in a rework reduction of 0.34% and a total cost saving of 4.63%, which includes savings in structural work (0.08%), architectural work (7.76%), and mechanical-plumbing work (0.06%). Avoided rework includes the demolition of 4.93 m³ of concrete, 70.81 m² of walls, 1051.11 m² of ducting relayout, and 1.05 m of pipe relocation. Additionally, the potential time saving is estimated at 41.7 days or 7.79% of the total project duration.

IMPLEMENTATION OF BIM 5D IN THE IMPLEMENTATION PLAN OF THE TRANS SUMATRA – JAMBI TOLL ROAD WITH CIVIL 3D AND NAVISWORK Ariany Frederika; I Gusti Agung Adnyana Putera; I Nyoman Aditya Prabawa
Jurnal Ilmiah Teknik Sipil Vol. 29 No. 2 (2025): Jurnal Ilmiah Teknik Sipil, Vol. 29 No. 2, September 2025
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2025.v29.i02.p09

Significant contributions to technological advancement are helpful in various aspects of work. In Circular Letter 11/SE/Db/2021, it is emphasized that the use of Building Information Modelling (BIM) must be applied in the planning stage of highway construction. 3D and 5D modeling can be done using Autodesk Civil 3D, while 4D modeling can be facilitated through Autodesk Navisworks. This study takes the Trans Sumatra Jambi Toll Road Project as an object of study with the aim of modeling toll roads using BIM-based Autodesk Civil 3D, analyzing the estimated costs from the modeling results, and visualizing the progress plan of mainroad work at a certain time through Autodesk Navisworks. Secondary data includes DED, BoQ and HSP. Modeling was performed on Autodesk Civil 3D including modeling of excavations and embankments as well as road pavement and drainage structures, Clash detection using Autodesk Naviswork, volume of work integrated using Microsoft Project and time simulation using Autodesk Naviswork. The results of the study show that from the modeling that has been carried out, the estimated cost of mainroad work has a deviation of -3.24% from the BoQ document. Comparison of data shows that the estimated volume and cost generated using the Autodesk Civil 3D BIM method is smaller than the conventional method. Simulated mainroad work progress display using Autodesk Naviswork software shows construction simulations, time progress tracking, and cost estimation in an integrated and informative manner to support project decision-making.

Bim and AI Adoption in Construction Project Planning: Evaluation, Challenges, and Strategic Recommendations for Design Consultants Ida Bagus Ari Suya Jnana; I Gusti Agung Adnyana Putera; A.A. Gde Agung Yana
Enrichment: Journal of Multidisciplinary Research and Development Vol. 4 No. 3 (2026): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v4i3.680

BIM and AI are becoming increasingly important in construction planning, although their adoption among design consultants remains uneven, particularly in developing construction markets. This research examines BIM-AI adoption through a combined assessment of BIM-AI maturity, technology acceptance, organizational and environmental readiness, and importance-performance priorities. The research was carried out in three design-consultant organizations in Bali, Indonesia: PT MBJ, Formata.id, and PT KASS. Data were obtained from 30 respondents through a Likert-scale questionnaire. The instrument was supported by content validation, pilot testing, and qualitative clarification. The results indicate that the three organizations had a high level of BIM-AI maturity, with a score of 3.97 out of 5.00. The overall TAM score reached 4.16, while adoption readiness scored 4.11, both of which were also in the high category. Respondents gave positive ratings to the TOE/implementation factors. The performance score was slightly higher than the importance score, 4.20 compared with 4.10, which indicates that the current implementation is already performing slightly above what respondents considered important. The reliability results also support the consistency of the instrument, with Cronbach's alpha values between 0.905 and 0.975. IPA identified five indicators in the Concentrate Here quadrant, mainly related to management support, workflow compatibility, system integration, human resource competence, and regulatory support. The study provides a practical basis for design consultants to strengthen their BIM-AI adoption. Rather than treating digital tools as separate or partial applications, the proposed structure helps organizations move toward more integrated, data-driven, and organization-wide use in construction planning.

Evaluation of the Implementation of Electronic Procurement of Goods and Services (E-Procurement) Komang Elistrisia Milandari; I Gusti Agung Adnyana Putera; Dewa Ketut Sudarsana
Enrichment: Journal of Multidisciplinary Research and Development Vol. 4 No. 3 (2026): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v4i3.692

Electronic procurement (e-procurement) is widely implemented to improve transparency, efficiency, and accountability in public procurement. However, its implementation still faces various technical and administrative constraints that affect procurement performance in local governments. This study evaluates the implementation of e-procurement in the Procurement of Goods and Services (PUPRPKP) Office of Tabanan Regency for the 2022–2024 period, identifies implementation barriers, and formulates alternative improvement strategies. A qualitative descriptive approach was employed. Data were collected through structured interviews with procurement working groups, Commitment Making Officials, and service providers, supported by SPSE system observations and document analysis. Data were analyzed using an interactive model with purposive sampling. Findings show implementation is adequate but not yet optimal in meeting procurement principles. Efficiency shows time and cost savings, constrained by system instability and administrative duplication. Effectiveness is limited by SiRUP delays and price-based evaluation dominance. Transparency and accountability are generally applied, but monitoring and data consistency are weak. Competition is hindered by specification bias and low participation. Study concludes e-procurement in Tabanan is not yet optimal and requires strengthening infrastructure, system integration, regulation, and oversight to ensure compliance.

Interoperability Evaluation of BIM Data Transfer from Autodesk Revit to Robot Structural Analysis Putu Egges Widiadnyana; I Gusti Agung Adnyana Putera; Anak Agung Gde Agung Yana
Enrichment: Journal of Multidisciplinary Research and Development Vol. 4 No. 4 (2026): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v4i4.698

The implementation of Building Information Modeling (BIM) in the construction industry demands efficient information integration across different disciplines. The integration between structural models and finite element models (BIM-to-FEM) has become crucial for data integration in structural analysis and modeling. The workflow from modeling to integration has a significant impact on the quality of the model output. This study aims to evaluate the level of interoperability in one-way data exchange from Autodesk Revit to Autodesk Robot Structural Analysis Professional (RSA) using the native API (Application Programming Interface) integration method. Testing was conducted through a case study involving the modeling of a multistory reinforced concrete building, with test parameters encompassing geometric consistency, material and section properties, structural connectivity, loading information, boundary conditions, and data loss. The evaluation results indicate that all data exchange indicators were fundamentally transferred successfully, achieving a 100% parameter accuracy rate. Nevertheless, this workflow does not run fully automatically and still requires significant manual adjustments and rework related to structural engineering logic. This study formulates standardized preprocessing steps to minimize misinterpretation errors before structural analysis computation is executed.

Developing a Fuzzy Logic and Sensitivity Analysis Model to Estimate Financial Loss from Social Conflict and Natural Disaster Risks in Hillside Construction Project Siswanto Pribadi; I Gusti Agung Adnyana Putera; Anak Agung Diah Parami Dewi
Eduvest - Journal of Universal Studies Vol. 6 No. 5 (2026): Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v6i5.52683

Hillside construction projects face external risks from community issues and slope problems such as landslides, which often cause cost overruns. However, current tools like risk matrices do not provide accurate cost estimates. This study develops a model that converts expert judgments on social conflict (RS) and natural-disaster risks (RB) into expected financial loss as a percentage cost overrun. The model used frequency and consequence ratings from 30 stakeholders, validated by six experts (I-CVI: 0.83–1.00; S-CVI/Ave: 0.90–0.92). Internal consistency was confirmed (Cronbach's α: 0.759–0.873). Scores were combined using weighted geometric mean (ω_F = 0.318; ω_C = 0.682) and processed by a Mamdani fuzzy inference system with triangular/trapezoidal membership functions and a 3×3 rule base. Tested on a hillside villa project in Lombok, Indonesia, the model estimated loss at 12.75%, close to the actual overrun of 11.65% (MAPE = 9.42%). Sensitivity analysis shows RB dominates near baseline, while RS exhibits threshold effects at higher levels. Cost-benefit analysis reveals mitigation value depends on how much KF can be reduced per mitigation cost. This framework enables integration of qualitative risk assessment into early contingency planning for hillside construction projects.

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