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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

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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.

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