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All Journal Jurnal Konstruksia International Journal of Built Environment and Scientific Research Rancang Bangun BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Jurnal Aplikasi Teknik Sipil JUTEKS - Jurnal Teknik Sipil Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Borneo Engineering: Jurnal Teknik Sipil Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Jurnal Sosial dan Teknologi Prosiding Seminar Nasional Teknik Sipil UMS Jurnal Indonesia Sosial Sains Journal Research of Social Science, Economics, and Management Jurnal Ekonomi, Teknologi dan Bisnis Jurnal Spesialis Teknik Sipil (JSpTS) International Journal of Health, Engineering and Technology Jurnal Konstruksi dan Infrastruktur : Teknik Sipil dan Perencanaan Jurnal Wilayah, Kota dan Lingkungan Berkelanjutan Clean Energy and Smart Technology Journal of Project Management Research
Wisnu Isvara
Department Of Civil Engineering, Universitas Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Veterinary

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The Implementation of Building Information Modelling for Cut and Fill Quantity Takeoff in Toll Road Project Astuti Fahmilia; Wisnu Isvara
Jurnal Indonesia Sosial Sains Vol. 4 No. 08 (2023): Jurnal Indonesia Sosial Sains
Publisher : CV. Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jiss.v4i08.856

Abstract

Technology has been going rapidly through the years, and BIM is one of the massive developments that offer some benefits for the construction industry. BIM is widely used in building project and has started to be used in infrastructure projects such as toll roads. In a toll road project, cut and fill is one of the massive volumes, which consume a lot of time to calculate the quantity and has a high chance to human error. This research aims to determine the implementation of BIM in cut and fill quantity take-off in Toll Road Project. The methodology for this research is qualitative descriptive with in-depth interviews with the expert. The study shows that implementing quantity take-off with BIM increases accuracy, reduces time, minimizes human error and efficiency. Nevertheless, still have some lacks, such as expensive cost for siftware, hardware and training, needs a long time adaptation to the organization, and also need collaboration all of the stakeholder to succesfuly implement BIM
Static Load Test of the Bridge to Fulfill the Functional Suitability Criteria of Way Sekampung Bridge Heri Khoeri; Panji Nugroho; Wisnu Isvara
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 9 No 1 (2024): MARCH
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v9i1.1180

Abstract

Jembatan dan terowongan jalan merupakan salah satu prasarana transportasi yang menyangkut hajat hidup orang banyak dan mempunyai fungsi sosial yang sangat penting sehingga harus dilakukan penyelenggaraan keamanan bagi pengguna jalan sebagaimana yang diamanatkan oleh Permen PUPR 10 tahun 2022 tentang Keamanan Jembatan dan Terowongan. Parameter daya layan yang harus dipenuhi untuk aspek keamanan adalah tidak terlampauinya batas tegangan dan batas lendutan pada saat operasional termasuk saat kondisi pembebanan maksimum terjadi. Untuk mengetahui perilaku Jembatan Way Sekampung saat beroperasi dilakukanlah uji pembebanan static dan dinamik pada jembatan. Uji beban statik dilakukan dengan beban bertahap sampai dengan 66% UDL (120 ton) dengan kelipatan 16% (30 ton), dan selanjutnya beban dihilangkan secara bertahap. Lendutan terukur pada beban 66% UDL yaitu 8,698 mm yang diextrapolasi ke 100% UDL menjadi 17,888 mm masih di bawah batas lendutan ijin (L/1000 = 35.7 mm). Sejalan dengan itu regangan yang diekstrapolasi dari regangan 60%UDL yaitu 0,00013 juga masih di bawah batas regangan tarik yang berpotensi menyebabkan beton retak (= 0,00015). Selama tahapan pengujian struktur menunukan bersifat linier elastin, dengan lendutan sisa maksimum 1.3 mm masih di bawah bats lendutan sisa yang diijinkan (17,4 mm). Berdasarkan penilaian parameter uji statik, maka jembatan laik untuk difungsikan.
Asesmen Stabilitas Geoteknik dan Rekomendasi Perbaikan Tanah dengan Soil Grouting dan Drainage Tunnels Khoeri, Heri; Isvara, Wisnu; Pradana, Roberto
JUTEKS : Jurnal Teknik Sipil Vol 9 No 1 (2024): JUTEKS (Jurnal Teknik Sipil)
Publisher : P3M- Politeknik Negeri Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32511/juteks.v9i1.1214

Abstract

Terdeteksinya pergeseran dinding penahan tanah pada awal tahun 2023 di salah satu lokasi tower transmisi DD6+12, dikhawatirkan akan mengganggu stabilitas tower yang dapat mengakibatkan kegagalan struktur tower. Asesmen dilakukan secara komprehensif terhadap verticality tower, pergeseran dinding penahan tanah, kondisi di bawah permukaan tanah, dan sifat-sifat tanah di sekitar area tower. Hasil asesmen menunjukkan adanya kemiringan pada tower transmisi secara linier dari bawah ke puncak, dengan defleksi di puncak ±20 cm ke arah selatan dan ±7 cm ke barat. Dengan kondisi ini rasio tegangan tehadap tegangan ijin elemen struktur ada yang mencapai 0.91. Walaupun masih dalam batas ijin, jika stabilitas tanah tidak diperbaiki, dikhwatirman tower akan mengalami kegagalan struktur. Scan GPR menunjukkan adanya perbedaan dimensi pondasi dengan as built drawing dan ditemukan adanya rongga di bawah permukaan tanah yang terisi air karena tidak terdrainasi dengan baik, dimana faktor kemanan dalam kondisi ini 1,088 sementara yang disyaratkan 1,5. Kondisi ini yang menyebabkan terjadinya pergeseran dinding penahan tanah. Rekomendasi pembuatan terowongan drainasi (drainage tunnels) di sisi hulu, soil grouting, pemasangan wheep hole pada dinding penahan tanah dan menambahkan secant pile, akan menaikkan faktor keamanan menjadi 1,988.
Pemeriksaan Kelaikan Fungsi Dengan Uji Beban Statik Pada Jembatan Gelagar Komposit Khoeri, Heri; Nugroho, Panji; Isvara, Wisnu
Borneo Engineering : Jurnal Teknik Sipil Volume 8 Nomor 1 Tahun 2024
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/be.v8i1.4969

Abstract

Parameter daya layan yang harus dipenuhi untuk aspek keamanan jembatan adalah tidak terlampauinya batas tegangan dan batas lendutan pada saat operasional termasuk saat kondisi pembebanan maksimum terjadi. Untuk mengetahui perilaku Jembatan Komposit A30 Persimpangan Underpass Bekambit saat beroperasi dilakukanlah uji pembebanan statik. Uji dilakukan dengan beban bertahap sampai dengan 60% beban rencana (UDL) dan selanjutnya beban dihilangkan pula secara bertahap.. Lendutan terukur pada beban 60% UDL yaitu  21.77 mm yang diextrapolasi ke 100% UDL menjadi 36.28 mm masih di bawah batas lendutan sisa terpasang yaitu 72.4 mm menurut spesifikasi jembatan gelagar komposit A30 dan juga masih di bawah batas lendutan ijin maksimum L/800 yaitu 37.5 mm. Sejalan dengan itu penambahan tegangan pada UDL100% yang diekstrapolasi dari tegangan 60%UDL yaitu 73.64 MPa artinya hanya 32 % dari tegangan ijin SM490 230 MPa. Elastisitas material selama pengujian menunjukkan hasil yang linier, dengan lendutan sisa maksimum 1.14 mm masih di bawah lendutan sisa yang diijinkan yaitu 7.5 mm. Sehingga berdasarkan hasil uji beban statik, jembatan dapat dinyatakan laik untuk difungsikan.
Formulasi Kuat Tekan Perkerasan Landasan Pacu Dari Sampel Acak Terstruktur Transmisi Permukaan Ultrasonik Khoeri, Heri; Isvara, Wisnu; Nugroho, Panji
Konstruksia Vol 16, No 1 (2024): Jurnal Konstruksia Vol 16 No. 1 Tahun 2024
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jk.16.1.131-141

Abstract

Landasan pacu (Runway) merupakan salah satu penentu keamanan dan keselamatan operasional bandara, kerusakan perkerasan runway dapat membahayakan operasi penerbangan. Untuk mengetahui daya dukung perkerasan beton bertulang, maka kuat tekan beton menjadi hal penting untuk diperiksa. Uji tekan pada sampel beton inti merupakan cara yang paling akurat untuk menentukan kuat tekan beton, namun waktu yang tersedia untuk pemeriksaan pada runway sangat terbatas, sehingga pengujian tidak merusak (Non destructive test, NDT) dengan uji cepat rambat gelombang ultrasonik (ultrasonic pulse velocity test, UPVT) dan uji palu pantul (Rebound Hammer test, RHT) menjadi alternatif pilihan. Pada landasan pacu pengujian ultrasonik yang memungkinkan adalah dengan metode transmisi langsung (indirect transmission method, ITM) atau metode transmisi permukaan (surface transmission method), yang dalam banyak penelitian menunjukkan nilai akurasi yang lebih rendah dibandingkan dengan direct transmission method (DTM). Penelitian dilakukan dengan sampel acak terstruktur 1245 data RHT di sepanjang runway 3645 m, 45 pengukuran DTM dan 15 uji sampel beton inti. Hasil pengujian menunjukkan ada hubungan kuat antara hasil RHT dengan ITM, ditemukan korelasi rendah antara ITM dengan kuat tekan beton, , dan tidak ada hubungan antara ITM dan .  Namun secara bersama-sama ITM dan RHT menunjukkan korelasi yang kuat dengan fc’, dimana dengan faktor determinasi.
Asesmen Stabilitas Geoteknik dan Rekomendasi Perbaikan Tanah dengan Soil Grouting dan Drainage Tunnels (Studi Kasus: Pergeseran Dinding Penahan Tanah Pondasi Tower Transmisi) Khoeri, Heri; Isvara, Wisnu; Pradana, Roberto
Jurnal Spesialis Teknik Sipil (JSpTS) Vol 5 No 2 (2024)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jspts.v5i2.12067

Abstract

The detection of a retaining wall displacement in early 2023 at one of the DD6+12 transmission tower sites raised concerns about the tower's stability, potentially leading to structural failure. A comprehensive assessment was conducted on the tower's verticality, retaining wall displacement, subsurface conditions, and soil properties around the tower area. The assessment results revealed a linear inclination of the transmission tower from the base to the top, with a deflection at the top of approximately ±20 cm to the south and ±7 cm to the west. With this condition, some structural elements reached a stress-to-permitted stress ratio of 0.91. Although still within allowable limits, without soil stabilization, it is at risk of structural failure. GPR scan results showed differences in foundation dimensions compared to the as-built drawings and identified cavities filled with water beneath the ground surface due to poor drainage, resulting in a safety factor of 1.088, whereas the required safety factor is 1.5. This condition caused the retaining wall displacement. Recommendations including constructing drainage tunnels upstream, soil grouting, installing wheep holes in the retaining walls, and adding secant piles would increase the safety factor to 1.988.
ANALISIS RESIKO GETARAN TANAH AKIBAT PENGEBORAN RENCANA PONDASI JEMBATAN YANG BERSIMPANGAN DENGAN JALUR PIPA GAS Khoeri, Heri; Isvara, Wisnu
Jurnal Teknik Sipil : Rancang Bangun Vol. 10 No. 2 (2024): Oktober 2024
Publisher : Universitas Muhammadiyah Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33506/rb.v10i2.3329

Abstract

Rencana pembangunan perumahan di Desa Cihuni, Kecamatan Pagedangan, Kabupaten Tangerang membutuhkan akses jalan yang melintasi jalur pipa milik PT. Pertamina Gas yang tertanam di bawah tanah. Pelaksanaan konstruksi di atas pipa gas tentunya berpotensi membahayakan keamanan pipa gas. Untuk mengetahui potensi resiko akibat getaran yang diakibatkan oleh pengeboran pondasi pada pipa gas yang tertanam dan mengetahui tindakan pencegahan dan atau perlindungan khusus apabila risiko pada pipa gas berada pada level yang tidak dapat diterima sesuai dengan klasifikasi resiko dilakukanlah penelitian ini. Hasil analisis menunjukkan bahwa penggunanaan mesin bor yang bertenaga 133kW dengan frekuensi putaran 36 rpm berpotensi menimbulkan getaran, PPV sebesar 33.15 mm/det saat mengenai pipa gas, hal ini melampaui kriteria maksimum yang diijinkan yaitu 30 mm/det, tentunya berpotensi merusak pipa. Sementara hasil analisis menunjukkan getaran akibat pengeboran tidak berpotensi menyebabkan likuifaksi dengan faktor keamanan sebesar 15. Untuk memitigasi hal tersebut alternatif yang dapat dilakukan adalah membatasi kecepatan putaran mesin bor sampai dengan 29.5 rpm atau menurunkan dasar pile cap sedalam 2.6 m, dan memasang accelerometer untuk memonitor besaran getaran dan menurunkan rpm atau menghentikan kegiatan konstruksi saat terindikasi ppv mendekati 30 mm/det.
Risk Factor Assessment Causing Contract Change Orders in the Double-Double Track Project Anggi Sanjaya; Wisnu Isvara
Journal Research of Social Science, Economics, and Management Vol. 4 No. 4 (2024): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v4i4.739

Abstract

The Indonesian government is actively pursuing infrastructure development, with railway projects being a key focus due to their high demand in Jakarta and its surrounding regions. However, the complexity of railway projects often leads to delays and numerous changes, resulting in scope modifications that necessitate change orders, which have negative consequences for the project. Managing these risks effectively is essential to mitigate their impact on project costs and performance. This study proposes a solution through the application of risk management using a qualitative method known as the Probability Impact Matrix, which helps assess the most significant risks leading to change orders. The research aims to identify and assess the risks responsible for contract change orders in the Double-Double Track Development Project. It uses a mixed-method approach, focusing on two main phases: risk identification and risk assessment. The study examines five risk factors, including project-related factors (X1), owner-related factors (X2), contractor-related factors (X3), design-related factors (X4), and external factors (X5). The results demonstrate that all five variables significantly influence changes in project scope, with risk levels ranging from moderate to high. These findings provide valuable insights for project owners, consultants, contractors, and other stakeholders involved in construction project management. The study serves as a reference for decision-making and the implementation of control measures to minimize the negative impact of change orders.
Conceptual Cost Estimation In Green Buildings By Using Regression Analysis And Artificial Neural Network Methods To Improve Accuracy Fauziyah Kamilah; Wisnu Isvara
Journal Research of Social Science, Economics, and Management Vol. 4 No. 5 (2024): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v4i5.751

Abstract

Conceptual cost estimation is a critical task during the early stages of a construction project, especially for green buildings, which present unique sustainability challenges and design complexities. Traditional methods such as regression analysis are widely used but often rely on experienced estimators and are time-consuming, while Artificial Neural Networks (ANN) offer a modern alternative but are limited by the quality and quantity of available data. This study aims to develop a hybrid model combining regression analysis and ANN to improve the accuracy of conceptual cost estimation for green and conventional high-rise buildings in Indonesia. Using data from 22 high-rise building projects (13 conventional and 9 green buildings), the study employed regression analysis, ANN techniques, and a combination of the two, with eight key variables selected for modeling. The hybrid model demonstrated the highest accuracy, achieving a Mean Absolute Percentage Error (MAPE) of 15.09%, within the acceptable range for conceptual cost estimation (+10–30%) as per AACE standards, outperforming standalone regression and ANN models. These findings highlight that integrating regression analysis and ANN provides a robust tool for early-stage cost estimation, supporting sustainable construction practices and informed decision-making.
Development Of Alliance Strategy in The Implementation Of Risk-Based EPC Projects To Enhance Cost Performance Capacity Of PT XYZ Andri Azhari Wicaksono; Wisnu Isvara
Journal Research of Social Science, Economics, and Management Vol. 4 No. 5 (2024): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v4i5.759

Abstract

In Indonesia's construction industry, EPC (Engineering, Procurement, Construction) contracts have become a widely recognized option, especially for projects with high levels of complexity. PT XYZ, as a state-owned construction company (BUMN), is actively involved in EPC projects in sectors such as power plants, factories, and oil processing. Given the high complexity of these projects, PT XYZ needs to form a consortium with partners to complement its limited capabilities. However, the formation of a consortium introduces risks that could potentially harm PT XYZ during project execution. This research aims to develop a risk management strategy to assist PT XYZ in making the right decisions in managing consortium risks, thereby enhancing the company's capacity to complete EPC projects. The research findings reveal that the highest risks occur during the construction phase, categorized as “Medium to High” level. These risks include "The Vendor Chosen by the Partner Lacks Competence", "Redesign Work, Design Errors or Defects, and Poor Design Variation Process Management", and "Poor Coordination Process Between Design, Procurement, and Construction"
Co-Authors Agnes Sari Diah Astuti Andreas Wibowo Andri Azhari Wicaksono Anggi Sanjaya Asep Handaya Saputra Astuti Fahmilia Astuti, Agnes Sari Diah Badaruddin, B Boris Sembiring Kembaren Boris Brama Halilintar Dini Sofiana Dini Sofiana Fahmilia, Astuti Fani Natasa Fauziyah Kamilah Heri Khoeri Heri Khoeri Heri Khoeri Heri Khoeri Ivan Sulistio Prabowo Jack Widjajakusuma Jariski, Muzamil Kerri Dwiky Iswara Khoeri, Heri Leni Sagita Riantini Mustika Sari Muzamil Jariski Natasa, Fani Nugroho, Panji Panji Nugroho Prabowo, Bagus Adi Pradana, Roberto Rachmad Irwanto Rachmawati, Titi Sari Nurul Rarasati, Ayomi Dita Roberto Pradana Roberto Pradana Sofiana, Dini Yusuf Latief